Sophie Thompson

Sophie Thompson (born 1962) is a British actress who portrayed Mafalda Hopkirk in Harry Potter and the Deathly Hallows: Part 1, taking over the role from Jessica Hynes. She is the younger sister of actress Emma Thompson who played Professor Sybill Trelawney in the film adaptations of Harry Potter and the Prisoner of Azkaban and Harry Potter and the Order of the Phoenix.

Trivia

 * In 2010, she alongside Zoë Wanamaker, who portrayed Rolanda Hooch, respectively portrayed Mrs. Reynolds and Ariadne Oliver in Hallowe'en Party, one of the episodes of Agatha Christie's Poirot.