--- title: Synod of Whitby author: Liam Groves source: https://www.worldhistory.org/Synod_of_Whitby/ format: machine-readable-alternate license: Creative Commons Attribution-NonCommercial-ShareAlike (https://creativecommons.org/licenses/by-nc-sa/4.0/) updated: 2026-05-18 --- # Synod of Whitby _Authored by [Liam Groves](https://www.worldhistory.org/user/liam.ugp/)_ The Synod of Whitby was an assembly held in 664 by King Oswiu of [Northumbria](https://www.worldhistory.org/Kingdom_of_Northumbria/), with the aim of deciding whether Oswiu's kingdom should follow [Roman](https://www.worldhistory.org/disambiguation/Roman/) Christian customs or those of the Irish Christians at Iona, particularly regarding the calculation of the date of [Easter](https://www.worldhistory.org/Easter/). The synod was held at Saint Hilda's monastery of Streanæshalch, later known as Whitby Abbey. The two opposing doctrines were represented at the synod by Oswiu and his son Alfrith, respectively, alongside the churchmen allied with them. Oswiu himself had followed the custom of the Ionan monks, as did his bishop Colman of Lindisfarne, whereas Alfrith followed the Roman customs and was joined at the synod by his close friend Wilfrid, a cleric who had studied at [Rome](https://www.worldhistory.org/Rome/). Despite this, the synod concluded with Oswiu ultimately ruling that Northumbria would follow the Roman calculation of Easter, and dispensing with the Ionan traditions he had followed since his youth. The Synod of Whitby has been viewed as a significant landmark in the history of the church in [England](https://www.worldhistory.org/disambiguation/england/), though whether or not it represented a stage in the 'Romanisation' of English [Christianity](https://www.worldhistory.org/christianity/) is debatable. The synod reconciled two Christian traditions and aligned the religious practices of the Northumbrian Christians with many of those in mainland [Europe](https://www.worldhistory.org/europe/). Whilst the synod was evidently centred on questions of faith, evidence suggests it served political purposes as much as it did ecclesiastical. ### Background The [Kingdom of Northumbria](https://www.worldhistory.org/Kingdom_of_Northumbria/) was an early medieval kingdom located in what is now Southern [Scotland](https://www.worldhistory.org/disambiguation/Scotland/) and Northern England. At its peak, it was one of the most powerful of the Anglo-[Saxon](https://www.worldhistory.org/Saxons/) kingdoms. Northumbria was composed of two formerly independent kingdoms – Deira and Bernicia – which had been united first in the early 600s when Oswiu's father Æthelfrith became the first Bernician king to also sit on the Deiran throne. In 616, Æthelfrith was killed in [battle](https://www.worldhistory.org/disambiguation/battle/) and later replaced by Edwin, formerly exiled king of Deira. Oswiu, no older than four at the time, fled Northumbria and was raised in exile in Dál Riata, an Irish kingdom located across the western coast of what is now Scotland and the northeastern tip of modern-day [Ireland](https://www.worldhistory.org/disambiguation/Ireland/). It was in Dál Riata that Oswiu first became immersed in the Christian faith. This was a '[Celtic](https://www.worldhistory.org/celt/)' Christian faith, distinct from that adopted by early Christians in England's south-east, which aligned instead with 'Roman' traditions – one relevant difference between the two being the calculation of the date of Easter. These 'Celtic' traditions in which Oswiu was immersed were specifically those practiced and promoted by the monks of Iona, an island within the kingdom of Dál Riata, home to an influential monastery and thus a significant centre of religious activity. In 633, Edwin was killed at the Battle of Hatfield Chase, and the sons of Æthelfrith returned to Northumbria to regain their patrimony. Oswiu ultimately ascended the Northumbrian throne in 642, following the [death](https://www.worldhistory.org/disambiguation/Death/) of his brother Oswald at the Battle of Maserfield in 642. Oswiu would later avenge Oswald at the Battle of the Winwaed in 655, wherein he defeated Penda of [Mercia](https://www.worldhistory.org/Kingdom_of_Mercia/), bringing Mercia under the influence of Northumbria, and leaving Oswiu as pre-eminent among Anglo-Saxon kings. [ ![Edwin of Northumbria, Newcastle](https://www.worldhistory.org/img/r/p/500x600/10481.jpg?v=1601840702) Edwin of Northumbria, Newcastle Lawrence OP (CC BY-NC-ND) ](https://www.worldhistory.org/image/10481/edwin-of-northumbria-newcastle/ "Edwin of Northumbria, Newcastle")Northumbria, in the meantime, had begun the process of Christianisation. Missionaries from Iona had first been invited to Northumbria during Oswald's reign, and most notable among these early missionaries was Aidan, later Bishop of Lindisfarne. Northumbria's alignment with the 'Celtic' tradition rather than the 'Roman' is thus often credited to Aidan's influence, and to the fact that the sons of Æthelfrith were raised among the traditions of the Ionan monks. However, Oswiu's royal household was not united in its faith. Oswiu's wife, Eanflæd, was the daughter of Edwin, the king of Deira, who had replaced Oswiu's father, Æthelfrith, as king of Northumbria. On Edwin's death and the return of the Bernician dynasty, Eanflæd and her mother, Æthelburg, had fled to Kent, where Eanflæd was raised amidst 'Roman' Christian traditions. Thus, when Oswiu later married Eanflæd, the new king and queen of Northumbria were joined in matrimony but not in their religious traditions. How far did this disunity prompt the Synod of Whitby? Exactly why Oswiu called the assembly can only be understood through careful scrutiny of the sources that recorded the event. ### Sources Two chief sources record the events of the synod: Stephen of Ripon's *Vita Sancti Wilfrithi* (*Life of Saint Wilfrid*) and [Bede](https://www.worldhistory.org/Bede/)'s *Historia ecclesiastica gentis Anglorum* (*Ecclesiastical History of the English People*). Ripon's *Life of Wilfrid* is a biography of Wilfrid, a controversial and active figure in Northumbrian politics, both ecclesiastical and temporal. Wilfrid was an ally to both Queen Eanflæd and to Oswiu's son from a former marriage, Alhfrith. He served as the abbot of Ripon, a position for which he had Alhfrith to thank, and later as the bishop of Northumbria, again partially thanks to Alhfrith's influence. Bede's *Ecclesiastical History* is broader in scope than the *Life of Wilfrid*, serving as a general history of England with a specific focus on Christianity and the English church. For Bede, born in Northumbria in 673, the Synod of Whitby was very recent and very relevant history, and Ripon's *Life* was among the sources he employed in his work. [ ![St. Petersburg Bede](https://www.worldhistory.org/img/r/p/500x600/6602.jpg?v=1714866546) St. Petersburg Bede GDK (Public Domain) ](https://www.worldhistory.org/image/6602/st-petersburg-bede/ "St. Petersburg Bede")Whilst both these sources record the synod in some detail, the relative paucity of sources presents a challenge for historians. This challenge is exacerbated by Bede's heavily vested interests: he was particularly interested in the [science](https://www.worldhistory.org/science/) of computus, the academic study of calendar dates, and he was notably concerned with the computation of Easter. Furthermore, he was also personally engaged in the unification of the English church. As such, the Synod of Whitby presented a singularly important event for Bede, and his representation of the assembly has greatly influenced how it has been remembered and understood. ### Religious Impetus The impression that arises from Bede's account is that the Synod of Whitby was convened almost solely on liturgical grounds. Bede states that, at this time, "a great and frequent controversy happened about the observance of Easter," with the differences in King Oswiu and Queen Eanflæd's practice causing some discord. He claims that thus, in the royal household, "Easter was twice kept in one year; and that when the king having ended the time of fasting, kept his Easter, the queen and her followers were still fasting, and celebrating Palm Sunday" (Bede HE iii, XXV). This difference was tolerated, claims Bede, until the death of Finan, the monk who had succeeded Aidan as bishop of Lindisfarne. Finan was in turn succeeded by Colman, another monk trained in the Ionan tradition. Bede blames Colman's ascension for the intensification of the Easter controversy, which at this point "began naturally to influence the thoughts and hearts of many," and very soon this mass consternation "reached the ears of King Oswiu and his son Alfrith" (*ibid*). Further heightening tensions, Oswiu's son, Alfrith, then expelled the Ionan monks who had been living in Ripon monastery and handed the monastery to his ally Wilfrid. Having studied in Rome, Wilfrid thus replaced the monastery's 'Celtic' traditions with his 'Roman' practices, which would have included a different calculation of Easter. It was these two events that, in Bede's telling, precipitated the Synod of Whitby: with the new controversy arising in Ripon monastery, set against the backdrop of mounting concern among the wider populus regarding the celebration of Easter, the synod was thus convened to settle the issue. If Bede's analysis is taken uncritically, the image emerges that the synod was solely about reconciling differences in faith. However, in his account lie hints that the event was just as strongly influenced by political impetus. ### Political Impetus Bede's account focuses almost solely on the liturgical motivations behind the Synod of Whitby. However, as demonstrated by Alfrith's replacement of the Ionan monks at Ripon with his friend Wilfrid, political and temporal motivations were evidently at play too. More recent research has highlighted that the religious questions which prompted the synod may have been magnified by Bede in his record, and that the political aspects, such as Oswiu's relationship with his son Alfrith, were greatly minimised. These political aspects have been summarised as: > Alhfrith's aspirations to his father's throne; Oswiu's fading position as bretwalda, that is, as overlord of the southern kings; the growing challenge to Oswiu's supremacy from Mercia; and, finally, the recent death of Deusdedit, Archbishop of Canterbury. > (Abels, 2) To understand Oswiu's motivations for convening the synod, his role as king and position in Anglo-Saxon society must be understood, along with his relationship with the church and with his sons. Following the Battle of the Winwaed in 655, Oswiu's position among Anglo-Saxon leaders was at its apex, with his influence now extending beyond Northumbria and over Mercia and with "imperium over all the southern kingdoms" (Abels, 11). However, by the time of the synod, this supremacy was being eroded. Wulfhere, son of Penda, had ascended the Mercian throne in 658, driving out Oswiu's governors. This weakening of Oswiu's authority could have also brought his overlordship of Kent and [Wessex](https://www.worldhistory.org/Kingdom_of_Wessex/) into question – two kingdoms which, it is worth noting, followed the 'Roman' tradition. [ ![Britain, c. 600 CE](https://www.worldhistory.org/img/r/p/500x600/3306.png?v=1761824824) Britain, c. 600 CE Hel-hama (CC BY-NC-SA) ](https://www.worldhistory.org/image/3306/britain-c-600-ce/ "Britain, c. 600 CE")Oswiu's grasp was also being weakened at home. His eldest son, Alhfrith, was acting with increasing independence from his father; his expulsion of the Ripon monks being a notable example. It appears likely that Alhfrith feared his position and future chances of succession were threatened by Ecgfrith, Oswiu's younger son by Queen Eanflæd, and was moving to shore up his own power. It has been argued that "Alhfrith may have seen a council as a means of weakening his father politically while strengthening his own prospects for the throne" (Abels, 10). By representing the Roman faction, Alhfrith placed his father in a compromising position and would have appeared well prepared to step in and fill the void should the synod harm Oswiu's prestige. For Oswiu, the religious aspects of the Easter question were also political. The death of Deusdedit, Archbishop of Canterbury, presented Oswiu with a difficult challenge. Claiming overlordship of the southern kingdoms, Oswiu ostensibly had the power to select Deusdedit's replacement. Doing so swiftly could stem the resurgence of Mercia; not only would the act itself of selecting the archbishop reassert Oswiu's authority over the other kingdoms, but it would also leave him with an ally in an influential ecclesiastical position. However, selecting Deusdedit's successor required papal approval, and Oswiu could not rely on the pope to overlook his deviation from the 'Roman' traditions. Thus, Oswiu had evident political motivations for calling the council, and additionally, clear motivations for what at first glance appears the surprising choice of abandoning his previously held traditions and declaring for the 'Roman' practices. In summoning the Synod of Whitby and additionally highlighting his fidelity to the pope, Oswiu avoided religious discord among the southern leaders over whom he claimed overlordship, reasserted his position above Mercia, and defanged Alfrith's political aspirations. ### The Synod & Its Outcomes The synod was convened at the monastery of Streanæshalch, later Whitby, founded by the abbess Hilda, who was present at the council alongside other clergy from across the English kingdoms. It is notable that Hilda herself followed the Ionan tradition. The case for the Ionan practices was put forth by Colman, Bishop of Lindisfarne and close ally of Oswiu, and was countered by Wilfrid, the Romanist abbot and friend of Oswiu's son Alfrith. According to Bede, Oswiu had the two men declare which customs they each observed and to defend these respective customs by explaining their origins. What follows in Bede's account is a religious debate between the two men, a debate that ultimately convinces Oswiu to adopt the 'Roman' tradition. Whilst Bede suggests that it is Oswiu's fear for his soul that encouraged him to declare for Wilfrid's traditions, the benefits to his own temporal position were considerable. [ ![Whitby Abbey](https://www.worldhistory.org/img/r/p/750x750/9703.jpg?v=1773261331) Whitby Abbey Mark Cartwright (CC BY-NC-SA) ](https://www.worldhistory.org/image/9703/whitby-abbey/ "Whitby Abbey")The Synod of Whitby thus formally instituted the 'Roman' practice in Northumbria. Colman resigned from his bishopric and returned to Iona, and Oswiu selected Tuda, a clergyman raised in Ireland but following the Roman tradition, to replace Colman as bishop over all Northumbria. However, Tuda died of [plague](https://www.worldhistory.org/disambiguation/plague/) shortly after, and a brief period of confused succession followed. Alhfrith, still ruling Deira under Oswiu, requested that he be allowed his own bishop in Deira, splitting Northumbria into two bishoprics, with Tuda's replacement being bishop of Bernicia. Oswiu appears to have consented, and Alhfrith sent Wilfrid to the continent to be consecrated. However, during the abbot's time abroad, Oswiu apparently reversed his decision, moving Northumbria's episcopal seat from Lindisfarne to York, the royal [city](https://www.worldhistory.org/city/) of Deira, and appointing the monk Chad, a former pupil of Aidan, as bishop of all Northumbrians. Oswiu's change of heart can be explained by the actions of his son: shortly after the synod, having exhausted his political options, Alhfrith turned to force of arms and revolted against his father (Bede, HE iii, 14). Alhfrith's fate is not made explicit, but his absence from the sources henceforth suggests that he did not fare well. It is likely this revolt occurred whilst Wilfrid was away, and thus when the abbot eventually returned with his former patron disempowered and most likely dead, the churchman withdrew to Ripon. The Synod of Whitby could have been a great blow to Oswiu's supremacy, but instead the king of Northumbria came out the other side with a renewed authority over his domain. He had been compelled to relinquish his long-held practices and decide against his friend and former bishop Colman, but in doing so, Oswiu had smoothed over the religious friction in his kingdom and successfully dashed his son Alfrith's ambitions for the throne by turning his political manoeuvring against him. ### Legacy The Synod of Whitby is remembered as an important moment in the history of the English church, but it should not be seen as a pivotal moment of great transformation. The event represented a step towards the 'unification' of the Christian church in England, inasmuch as it formally instituted the religious practices of Northumbria, and aligned them with those of other English kingdoms. It has, however, been argued that this unification would have occurred with or without the synod, especially given that, at the time, even Christians in Ireland had begun to follow the 'Roman' reckoning of Easter and the Ionans were becoming outliers. The Synod of Whitby is thus better viewed as a stage within a broader trend of religious homogenisation, rather than itself a catalyst. #### Editorial Review This human-authored definition has been reviewed by our editorial team before publication to ensure accuracy, reliability and adherence to academic standards in accordance with our [editorial policy](https://www.worldhistory.org/static/editorial-policy/). ## Bibliography - Abels, R. "The Council of Whitby: A Study in Early Anglo-Saxon Politics." *1983*, 23, 1 (1983), pp. 1-25. - [Higham, N. J. *The Convert Kings.* Manchester University Press, Manchester, 1997.](https://www.worldhistory.org/books/0719048281/) - [John, E. "Social and Economic Problems of the Early English Church." *'Land, Church, and People '*, edited by Joan Thirsk (ed). The British Agricultural History Society, 1970, 39-63.](https://www.worldhistory.org/books/0903269015/) - [Lapidge, M., Blair, J., Keynes, S., Scragg, D. *The Wiley Blackwell Encyclopedia of Anglo-Saxon England.* Wiley-Blackwell, Oxford, 2013.](https://www.worldhistory.org/books/0470656328/) - [Mayr-Harting, Henry. *The Coming of Christianity to Anglo-Saxon England.* Penn State University Press, 1991.](https://www.worldhistory.org/books/0271007699/) - [Moberly, George Herbert 1837-1895 & Bede, The Venerable Saint. *Historia ecclesiastica gentis Anglorum.* Legare Street Press, 2022.](https://www.worldhistory.org/books/1018852980/) - Stephen of Ripon. *Vita Sancti Wilfrithi.* ## About the Author Liam is a teacher, writer, and historian. He is particularly interested in the history of early medieval Britain. His recent research has focussed on medieval resistance to colonisation, specifically within Wales and Northeastern Europe. ## Timeline - **642 CE - 670 CE**: Reign of Oswiu in [Northumbria](https://www.worldhistory.org/Kingdom_of_Northumbria/). - **654 CE**: Reunification of [Northumbria](https://www.worldhistory.org/Kingdom_of_Northumbria/) under King Oswiu. - **657 CE**: [Hilda of Whitby](https://www.worldhistory.org/Hilda_of_Whitby/), granted 1200 acres by King Oswiu of [Northumbria](https://www.worldhistory.org/Kingdom_of_Northumbria/), founds Whitby Abbey. - **664 CE**: [Hilda of Whitby](https://www.worldhistory.org/Hilda_of_Whitby/) host the Synod of Whitby; Oswiu of [Northumbria](https://www.worldhistory.org/Kingdom_of_Northumbria/) decides in favor of [Roman](https://www.worldhistory.org/disambiguation/Roman/) Catholicism over [Celtic](https://www.worldhistory.org/celt/) [Christianity](https://www.worldhistory.org/christianity/). ## Cite This Work ### APA Groves, L. (2026, May 18). Synod of Whitby. *World History Encyclopedia*. [https://www.worldhistory.org/Synod\_of\_Whitby/](https://www.worldhistory.org/Synod_of_Whitby/) ### Chicago Groves, Liam. "Synod of Whitby." *World History Encyclopedia*, May 18, 2026. [https://www.worldhistory.org/Synod\_of\_Whitby/](https://www.worldhistory.org/Synod_of_Whitby/). ### MLA Groves, Liam. "Synod of Whitby." *World History Encyclopedia*, 18 May 2026, [https://www.worldhistory.org/Synod\_of\_Whitby/](https://www.worldhistory.org/Synod_of_Whitby/). ## License & Copyright Submitted by [Liam Groves](https://www.worldhistory.org/user/liam.ugp/ "User Page: Liam Groves"), published on 18 May 2026. The copyright holder has published this content under the following license: [Creative Commons Attribution-NonCommercial-ShareAlike](https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en). 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