I think it's derived from Tierney (m)
A "tiarna" (Irish), or "tighearna" (Scottish), both from the Old Irish "tigerna", is a lord in the Gaelic world and languages.Tierney is a modern version of the surname of "Tiarna", even though spelt differently the meaning remains the same.Sources: https://en.m.wikipedia.org/wiki/Tigernahttps://en.m.wiktionary.org/wiki/Tiarna

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Tiarne - Australian name  ·  Perrine  ·  4/18/2021, 6:38 AM
Just wanted to say that I solved the mystery (sort of) (more)  ·  Perrine  ·  1/16/2023, 6:41 PM
I think it's derived from Tierney (m)  ·  guasguendi  ·  4/18/2021, 10:41 AM
I disagree (m)  ·  Amphelise  ·  4/18/2021, 11:32 PM
Re: I think it's derived from Tierney (m)  ·  Perrine  ·  4/18/2021, 10:55 AM
Re: I think it's derived from Tierney (m)  ·  thegriffon  ·  4/19/2021, 9:23 AM
Re: I think it's derived from Tierney (m)  ·  Amphelise  ·  4/19/2021, 10:28 PM
Re: I think it's derived from Tierney (m)  ·  Perrine  ·  4/19/2021, 10:08 AM