Full Name: Cygnus Black III
Species: Pure Blood Wizard
Cygnus was born in 1938, the youngest son of Pollux Black and Irma Crabbe and brother of Walburga and Alphard, who was later blasted off the family tapestry.
He married Druella Rosier, and the couple had three daughters: Bellatrix, the eldest, in 1951, Andromeda, the middle child, between 1951-1955, and Narcissa Black, the youngest child, in 1955. Andromeda was disowned for marrying a Muggle-born wizard, Ted Tonks. All the family, but Sirius subsequently shunned her. Through his eldest daughter, he is the grandfather of Delphini, who was fathered by Voldemort through their affair together. Through his disowned daughter and his youngest daughter, Cygnus is the grandfather of Nymphadora Tonks and Draco Malfoy respectively, and is also the great-grandfather of Teddy Lupin and Scorpius Malfoy, respectively.
He died in 1992, when his grandson was attending his first or second year at Hogwarts School of Witchcraft and Wizardry. Cygnus was the second last remaining Black of the male line before his nephew.