Origin of the Name Henehan
family history was found in the allfamilycrests.com archives. The names Henehan, Heneghan and Henihan are of Irish origin and are anglicized forms of the native Gaelic O'hEineachain and O'hEinachain septs that were located in County Mayo.
A sept or clan is a collective term describing a group of persons whose immediate ancestors bore a common surname and inhabited the same territory. Irish septs and clans that are related often belong to even larger groups, sometimes called tribes.
They were a sept of the Ui Fiachrach. These Gaelic names have also been occasionally anglicized as Bird. They are recorded in 'Stafford's Inquisition of County Mayo' as being located in the baronies of Carra and Clanmorris, the spellings then being O'Henegan, O'Henigan, and Henecan. A Father Patrick Henecan was parish priest of Ballysodare and was Dean and Vicar General of the diocese of Achonry in the year 1743. As far back as the year 1295 a Tayg O'Henehan was recorded as having been arraigned for theft.
The Henehan coat of arms came into existence centuries ago. The process of creating coats of arms (also often called family crests) began in the eleventh century although a form of Proto-Heraldry may have existed in some countries prior to this. The new art of Heraldry made it possible for families and even individual family members to have their very own coat of arms, including all Henehan descendants.