Morfin Gaunt (fl. 1925 – 1943) was a pure-blood wizard descended from Salazar Slytherin. He was the son of Marvolo Gaunt, brother ofMerope Gaunt, and uncle of Tom Marvolo Riddle, also known as Lord Voldemort. After he hexed Tom Riddle Sr. with painful hives, a Mugglewho lived near his home in Little Hangleton because his sister was infatuated with him, his recklessness and disregard for wizarding law attracted the attention of Ministry of Magic officials. After a fight where he and his father assaulted a Ministry investigator, Morfin was imprisoned in Azkaban for three years. When he returned home, his father and sister had already died. In 1943, Morfin met his nephew, who killed his paternal family and then altered Morfin's memory so that he believed he was the murderer. Morfin died in Azkaban, but not before Albus Dumbledore learned the truth about the Riddle murders.