And these variation from Wiki too I wonder if you could use the English version and to Tris as a nn... (sorry OP will stop now)
Beata (Polish, Swedish)
Beate (German, Norwegian)
Beatha (Irish)
Beatrica (Croatian, Slovakian)
Béatrice (French)
Beatrice (Italian)
Beatričė (Lithuanian)
Beatrijs (Dutch)
Beatrika (Slovene)
Βεατρίκη (Veatriki) (Greek)
Beatris (English)
Beatrisa (German)
Beatrise (Latvian)
Beatriss (English)
Beatriu (Catalan)
Beatrix (Dutch, English, German, Hungarian, Latin)
Beatriz (Galician, Portuguese, Spanish)
Beatrycze (Polish)
Beitris (Scottish Gaelic)
Betrys (Welsh)