Brilliant Family History
Brilliant Name Meaning
Jewish (Ashkenazic): artificial name from German Brillant ‘diamond of the finest cut’ (from French brillant present participle of briller ‘to shine or glitter’) or from the Polish cognate brylant which has the same meaning or from the Yiddish cognate brilyant which has a more general meaning ‘diamond jewel’. Compare Diamond .
Source: Dictionary of American Family Names 2nd edition, 2022