2,751 TIERNAN members around the world
Stay informed about TIERNAN Family online & offline events!
See our recent family gatherings

TIERNAN Family History
Recorded as O'Tiernan, MacTiernan, McTiernan, and Tiernan, this notable surname is Irish. It derives from the Old Gaelic name MacTighearnain, meaning the son of Tierna, a name meaning lord or master. Traditionally, Irish family names are taken from the heads of tribes, revered elders, or some illustrious warrior, and are usually prefixed by "Mac", denoting "son of", or "O", grandson, male descendant of. Two separate septs of MacTiernan arose independently in Ireland, the first belonged to the Ulster county of Cavan, and were a branch of the great O'Rourkes, styled Lords of Breffny, whose chieftains ruled territory in Counties Cavan and Leitrim...Who have we missed?
Tell us about any famous TIERNAN (or surname variant) you think we should add here. We will get our genealogists to check them out and add them to the list. Thanks!
Join the conversation with the TIERNAN tribe
- Find your TIERNAN ancestor
- Tell us about your TIERNAN Family
- Tell us about your TIERNAN ancestors
- Ask a question about the TIERNAN history
- Leave a message for TIERNAN family members
Tiernan family in Doughill, Curraghroe, Roscommon , Ireland, can be traced back to late 1700`s. Edward Tiernan married an Anne Gill in mid 1800`s
My father was John Tiernan born i Liverpool in 1904. His father came to Liverpool as a child/young man but his grandfather came from Ireland possibly Roscommon,
Areas of Origin for TIERNAN
Invite more TIERNAN family members!
Write an email address and click 'Invite' to share this page with more members of the TIERNAN tribe.
Log in or Register to invite others
Family Coat of Arms Generator

Why not see what your family crest could look like based on your own family characteristics?
Create CrestShow off the TIERNAN Family Crest…
Wear your crest with pride...plenty of products to choose from