Dorea Black (Potter)

Dorea was born in 1920.  Dorea's father was Cygnus Black and her mother is Violetta Bulstrode (Black).  Her paternal grandfather was Phineas Nigellus Black and her paternal grandmother is Ursula Flint (Black). She had two brothers and a sister, named Pollux, Marius and Cassiopeia.  She was the youngest of the four children.  She died at the age of 57 in 1977.

Here is a link to the TNG Page