Meaning and Origin of: Tiernan

Save Name

First name origins & meanings:

  • Celtic, Gaelic : Lord

First name variations

Last name origin & meaning:

  • Irish (Westmeath and Mayo) : reduced Anglicized form of Gaelic Ó Tíghearnáin ‘descendant of Tíghearnán’, a diminutive of Tighearna, a byname meaning ‘lord’, ‘master’. Compare Tierney, McKiernan. Woulfe believes Ó Tíghearnáin to be a variant of Ó Tíghearnaigh (see Tierney) in both counties.