Pope Leo X: Did you mean...?

A gold solidus (nomisma) coin of Byzantine emperor Leo V the Armenian (r. 813-820 CE). The reverse side shows his son Constantine. (Classical Numismatic Group, Inc. http://www.cngcoins.com)

An illustration from a 12th century CE manuscript depicting the proclamation of Leo V the Armenian, emperor of the Byzantine Empire from 813 to 820 CE. (Madrid Skylitzes, National Library, Madrid)

A 13th century CE illustration showing Byzantine emperor Basil I (r. 867-886 CE) confronting Leo VI, his son, murderer and successor. (Madrid Sklitzes, National Library, Madrid)

A gold nomisma coin depicting Byzantine emperor Leo III (r. 717-741 CE). (British Museum, London)

Martin Luther (l. 1483-1546) was a German priest, monk, and theologian who became the central figure of the religious and cultural movement known as the Protestant Reformation. Even though earlier reformers had expressed Luther's...

The Carolingian Dynasty (751-887) was a family of Frankish nobles who ruled Francia and its successor kingdoms in Western and Central Europe during the Early Middle Ages. The dynasty expanded from Francia as far as modern Italy...

The relationship between the Byzantine Empire and ancient Armenia was a constant and varied one with an equal mix of wars, occupations, treaties of friendship, mutual military aid, and cultural exchange. Regarded as...

Leo Lesquereux, 19th-century paleobotanist, image by an unknown artist, published in Popular Science Monthly April 1887.

Henry VIII of England ruled as king from 1509 to 1547. The second Tudor king after his father Henry VII of England (r. 1485-1509), Henry had inherited a kingdom which enjoyed both unity and sound finances. Famous for his six...

Thomas Wolsey, Cardinal Archbishop of York (l. c. 1473-1530 CE) served as Lord Chancellor to Henry VIII of England (r. 1509-1547 CE) from around 1513 CE to 1529 CE. Wolsey rose to become the most powerful man in England after the...