Noble; of noble birth
Trishia is a modern elaboration of Tricia, which itself is a diminutive of Patricia. It ultimately derives from the Latin word 'patricius', referring to the elite social class of ancient Rome.
Less common today
Trishia isn't in the latest US Top 1000. It last peaked at #4,780 in 1990.
US births per 5-year period, 1990βpresent (SSA data).