Phineas Nigellus was born in 1847. Phineas Nigellus' father was Black and his mother was (Black). He was the third of four children. He had a brother and two sisters, named Sirius, Isla and Elladora. He died, at the age of 79, in 1926.
Phineas Nigellus and Ursula were married (further details are not known).
They had four sons and a daughter, named Sirius, Phineas, Arcturus, Belvina and Cygnus.