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The endings look typically Romanian indicating a diminutive or some such relation to the root ...

In using a Latin roots book, I'll venture a few guesses as no one else has posted ...

Chiv ...maybe the Latin root 'civis' ...a citizen
Tariceanu ...maybe the Latin root 'tardus' ...slow
Tiriac ...maybe the Latin 'terra' ...earth or land ...Old Irish also uses 'Tir' as a root meaning "territory" ...

Just a few ventured guesses ...