Alecto and Amycus Carrow

Alecto and Amycus were part of the group of Death Eaters that invaded Hogwarts in June of 1997 (HBP27); Snape implies that they were never sent to Azkaban (HBP2). Last name confirmed by JKR (JKR).

Carrow, Alecto
The sister of Amycus Carrow. When Voldemort took over Hogwarts, Alecto Carrow became the Muggle Studies teacher (DH12). Before the final Battle of Hogwarts, Alecto was bound up by McGonagall and suspended in mid-air in the Ravenclaw common room (DH30).

Alecto was one of the three Furies in Greek mythology. Her name means 'unceasing in anger' (EM).

Carrow, Amycus
Alecto Carrow's brother, a squat, "lumpy" looking wizard with a lopsided leer and a wheezy giggle. When Voldemort took over the Hogwarts in the fall of 1997, Amycus was made the Defense Against the Dark Arts teacher, although he simply taught students to perform the Dark Arts (DH12). Before the final Battle of Hogwarts, Amycus was bound up by McGonagall and suspended in mid-air in the Ravenclaw common room (DH30).

Amycus was the son of Poseidon and the nymph Melia. He became the king of the Bebryces (a mythical people in Bithynia), and was very skilled in boxing (EM). Curiously, 'Amicus' (note the different spelling) is Latin for 'friend.'