Ogham

One of the stranger ancient scripts one might come across, Ogham is also known as the 'Celtic Tree Alphabet'. Estimated to have been used from the fourth to the tenth century CE, it is believed to have been possibly named after the Irish god Ogma but this is debated widely. Ogham actually refers to the characters themselves, the script as a whole is more appropriately named Beith-luis-nin after the order of alphabet letters BLFSN.