Where does “a Thiarna” come from?

a Thiarna (Irish) comes from Irish Tiarna, from Old Irish tigerna, from Old Irish tigernae, from Old Irish tigern, from Proto-Celtic tigernos, from Proto-Celtic -īnos, from Proto-Indo-European -iHnos, from Proto-Indo-European -no- — adjectival suffix.

a Thiarna (Irish): Good Lord!

Definitions

  1. Good Lord!

Ancestry of “a Thiarna”, step by step

a Thiarna traces back through two separate lines of ancestry.

via Irish Tiarna

StepLanguageWordMeaning
1IrishTiarnaLord
2Old Irishtigerna—
3Old Irishtigernaelord
4Old Irishtigern—
5Proto-Celtictigernoslord, ruler
6Proto-Celtic-īnosOf or pertaining to; -ine
7Proto-Indo-European-iHnosCreates adjectives of materials
8Proto-Indo-European-no-adjectival suffix

via Irish a

StepLanguageWordMeaning
1Irishahis, its; her, its; their
2Old Irishanominative/accusative singular neuter of in; that...
3Proto-Celtic*āO (vocative particle)
4Proto-Indo-Europeanōoh, ah
Every word from Proto-Indo-European -no- →Every word from Proto-Celtic -īnos →Every word from Proto-Celtic tigernos →