Regulus Arcturus Black (1906 – 1959) was a pure-blood wizard, the youngest child of Sirius Black II and Hesper Gamp and brother of Arcturus Black III and Lycoris. Regulus never married and never had children.
Behind the scenes
- Based on a statement by Horace Slughorn, Regulus may have been a member of the Slytherin House. However, he attended Hogwarts c. 1917 - 1924, when Slughorn may not have been Potions master.
- Regulus was the granduncle of another Black called Regulus.
- On the Black family tree tapestry in the film version of Harry Potter and the Order of the Phoenix, Regulus I is depicted more like a woman than a man.
Members of the Black family and their history seem to have made a tradition of naming their children after stars and constellations. In Latin, regulus means "little king" and was one term for a basilisk. As a name, it has also been applied to the star Alpha Leonis, which is situated at the heart of the lion in the constellation Leo. Regulus was also the family name of a Roman general, Marcus Atilius Regulus, who was known for his honour and self-sacrifice.
- Harry Potter and the Order of the Phoenix (film) (Appears on Black family tapestry)