Fabian and Gideon Prewett were both pure-blood wizards born to Mr. and Mrs. Prewett and brothers to Molly Weasley.
- Fabian Prewett — Brother of Gideon and Molly and member of the original Order of the Phoenix. He was murdered by five Death Eaters before the end of the First Wizarding War. Through his sister he is the uncle to seven Weasley children and brother-in-law of Arthur Weasley.
- Gideon Prewett — Brother of Fabian and Molly and member of the original Order of the Phoenix. He was murdered by five Death Eaters before the end of the First Wizarding War. Through his sister, he is the uncle of seven Weasley children and brother-in-law of Arthur Weasley.