Only daughter of Phineas Nigellus Black and Ursula Flint (BFT).
Children: Belvina had two sons, one daughter (BFT).
Ancestry: mostly pure-blood; descendants of mixed blood are not recognized by the family.
Name origins? Not a star or constellation; in a Latin context it would mean something like 'lovely wine.' Possible associations with Baal or Beltane.