Cygnus Black II (1889-1943) was the fifth and youngest child of Hogwarts Headmaster Phineas Nigellus Black. He was the younger brother of Sirius, Phineas, Arcturus and Belvina Black. He married Violetta Bulstrode and fathered Pollux, Cassiopeia, Marius and Dorea Black.
Cygnus was a thin man with grey hair and a long nose. He usually wore brown and grey suits.
Cygnus was a boring and sluggish man that never seemed to have an opinion or stand up for himself, greatly annoying his brother Arcturus Black II.
Cygnus was born as the youngest of five children in Hogsmeade to Hogwarts's Headmaster and School Matron.He attended Hogwatys from 1900 to 1907 and was sorted into Slytherin House, mainly because his family name, because he clearly lacked determination and ambition.
At some point, he married Violetta Bulstrode and they raised four children together: