Fabian Prewett was a pure-blood wizard, the brother of Gideon Prewett and Molly Weasley, and a member of the original Order of the Phoenix during the First Wizarding War. Remembered as a heroic and formidable fighter, Fabian was murdered by Death Eaters alongside his brother. His death had a profound and lasting impact on his sister Molly, and his memory is honored through the legacy he left behind, most notably his gold watch, which was passed on to Harry Potter.
Fabian was born into the Prewett family, a respected wizarding family and one of the “Sacred Twenty-Eight” (Pottermore). He was the brother of Gideon Prewett and Molly Prewett, who later married Arthur Weasley. During the first rise of Lord Voldemort, Fabian and his brother Gideon joined the Order of the Phoenix, an organization founded by Albus Dumbledore to oppose the Dark Lord and his followers. They were considered among the best fighters in the Order. In a tragic event during the First Wizarding War, Fabian and Gideon were ambushed and killed by a group of five Death Eaters. Alastor Moody later recounted the event to Harry Potter, stating that the brothers “fought like heroes.” The only named attacker confirmed in the confrontation was Antonin Dolohov. The loss of her brothers was a devastating blow to Molly Weasley and remained a source of deep grief for the rest of her life.
Fabian's physical appearance is only described from a magical photograph of the original Order of the Phoenix shown to Harry by Alastor Moody. In the picture, he and his brother Gideon Prewett are identical, both possessing fiery red hair, a trait they shared with their sister Molly and her children. They are seen grinning broadly, suggesting a cheerful and good-natured disposition. His personality is primarily defined by his immense courage. Alastor Moody's description of his final battle, where he and his brother fought ferociously against five Death Eaters, establishes him as an exceptionally brave and resilient wizard. His willingness to join the Order of the Phoenix and fight against Voldemort demonstrates a strong moral character and a commitment to protecting the wizarding world.
While specific spells cast by Fabian are unknown, his magical prowess was evidently exceptional.