Kings of Osraige

A number of important royal Ossorian genealogies are preserved, particularly MS Rawlinson B502, which traces the medieval Mac Giolla Phádraig dynasty back through Óengus Osrithe, who supposedly flourished in the first or second century.

[5] The following kings are listed in all major genealogies, but originate from an early period in Irish protohistory, and likely stem from oral tradition.

[6] The following is a synchronism of the kings of Osraige from historic times until the death Gilla Patraic Ruadh in 1103, after which the kingdom experienced some political fracturing.

The kingdom of Osraige did not fully disappear after the arrival of Norman mercenaries in Ireland, though it was greatly reduced in size.

The following list may include powerful members of different lines of the family, who may or may not necessarily have been inaugurated as the Mac Gilla Pátraic per se, but who were likely recognized nonetheless as the de facto ruler or potential heir, and noteworthy enough for reference by the annalists and in key records such as Liber Ruber,[23] the Ormond Deeds [24] and the Kildare Rental.