Muggles' Guide to Harry Potter/Characters/Gideon Prewett

Overview
Gideon Prewett was a member of the original Order of the Phoenix, and one of Molly Weasley's brothers.

Philosopher's Stone
In their first meeting, Hagrid mentions to Harry that Voldemort killed some of the best wizards of the age such as the Prewetts, along with the Bones and the McKinnons.

Order of the Phoenix
At the celebratory party at Grimmauld Place for Ron and Hermione's appointment as Prefects, Alastor Moody shows Harry a photograph of the original Order of the Phoenix. Gideon Prewett is in that photo, with his brother Fabian, and Moody says it took five Death Eaters to kill them.

Gideon and Fabian were Molly Weasley's brothers. It is in part because she has lost immediate family members to Death Eaters already that her greatest fear, as shown by the Boggart in that same chapter, is of her own family members dying. We suspect that her apparent fear that Harry will die is an indication that she feels Harry to be part of her family.

Strengths
Gideon was apparently a skilled wizard, evidenced by the fact that he and his brother fought through multiple Death Eaters before being killed.