Cygnus Black III

Cygnus Black (1929 – 1979) was a pure-blood wizard, 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, Andromeda and Narcissa Black. Andromeda was disowned for marrying a Muggle-born wizard, Ted Tonks. All the family but Sirius subsequently shunned her. 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. Cygnus died in the same year as Orion and his son (Cygnus's nephew) Regulus died.

Etymology
Like many other members of the House of Black, Cygnus is named after a constellation. Cygnus is a northern constellation known as the Swan or the Northern Cross. It was named for several swans which appear in Greek mythology, including the one Zeus transformed into to seduce Leda, the form Orpheus took after his death, and a son of the god Apollo who was turned into a swan after his murder. The name is derived from the Greek κύκνος, kyknos, meaning "swan".

Behind the scenes

 * Cygnus and his wife were likely in Slytherin house.
 * Cygnus was named after his paternal grandfather. There was also Cygnus I, an early member of the House of Black.
 * If James Potter was the son of Dorea and Charlus Potter, Cygnus would be the first cousin of James.

Appearances

 * Harry Potter and the Order of the Phoenix (film)

Notes and references
Cygnus Black III Cygnus Musta III