Bilius Weasley

Origin: Harry Potter
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Species: Human
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Parents: Cedrella & Septimus Weasley
Siblings: Arthur, 1 older brother
Residence: Kagan Street 13 (8-112)
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Talent: Magic
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Import Date: 5 (+)

Bilius (surname Weasley or Prewett) was a pure-blood wizard and a brother of either Arthur Weasley or Molly Weasley, making him the uncle of their seven children. A lifelong bachelor, he was fun-loving and lively, but was prone to eccentric behaviour.[2] He reportedly died twenty-four hours after seeing a Grim.[3]

Biography
Bilius was a brother of either Arthur Weasley or Molly Weasley and an uncle to the couple's seven children, as well as the namesake for the youngest son, Ronald Bilius Weasley.
Bilius never married and presumably had no children.[2] According to his nephews, Fred and George Weasley, he was always a joker, and was fun to have at weddings and parties. On more than one occasion, he was said to have consumed an entire bottle of firewhisky and then run to the dance floor, where he lifted his robes and began to pull bouquets of flowers out of an alarming part of his body.[2]
Bilius was said to have gone "loopy" towards the end of his life.[2] According to his nephew Ron, he died twenty-four hours after having seen a Grim sometime in or prior to September 1993.[3]