Fiona Mary Shaw, accomplished classical actress and theatre and opera director, is born in Farranree, County Cork on July 10, 1958. She is best known for her role as Petunia Dursley in the Harry Potter films and her role portraying Marnie Stonebrook in the HBO series True Blood.

Shaw attends secondary school at Scoil Mhuire in Cork. She receives her degree at University College Cork. She trains at the Royal Academy of Dramatic Art (RADA) in London and is part of a ‘new wave’ of actors to emerge from the Academy. She receives much acclaim as Julia in the Royal National Theatre production of Richard Sheridan‘s The Rivals (1983).

Shaw’s theatrical roles include Celia in As You Like It (1984), Madame de Volanges in Les Liaisons Dangereuses (1985), Katherine in The Taming of the Shrew (1987), Lady Franjul in The New Inn (1987), Young Woman in Machinal (1993), for which she wins the Laurence Olivier Award for Best Actress, Winnie in Happy Days (2007), and the title roles in Electra (1988), The Good Person of Sechuan (1989), Hedda Gabler (1991), The Prime of Miss Jean Brodie (1998) and Medea (2000). She performs T. S. Eliot‘s poem The Waste Land as a one-person show at the Liberty Theatre in New York City to great acclaim in 1996, winning the Drama Desk Award for Outstanding One-Person Show for her performance.

Shaw plays Miss Morrison in the 1984 The Adventures of Sherlock Holmes episode “The Adventure of the Crooked Man” and Catherine Greenshaw in Agatha Christie’s Marple episode “Greenshaw’s Folly” in 2013.

Shaw notably plays the male lead in Richard II, directed by Deborah Warner in 1995. She has collaborated with Warner on a number of occasions, on both stage and screen. She has also worked in film and television, including My Left Foot (1989), Mountains of the Moon (1990), Three Men and a Little Lady (1990), Super Mario Bros. (1993), Undercover Blues (1993), Persuasion (1995), Jane Eyre (1996), The Butcher Boy (1997), The Avengers (1998), Gormenghast (2000), and five of the Harry Potter films in which she plays Harry Potter‘s aunt Petunia Dursley. She has a brief but key role in Brian DePalma‘s The Black Dahlia (2006).

In 2009, Shaw collaborates with Deborah Warner again, taking the lead role in Tony Kushner‘s translation of Bertolt Brecht‘s Mother Courage and Her Children. In a 2002 article for The Daily Telegraph, Rupert Christiansen describes their professional relationship as “surely one of the most richly creative partnerships in theatrical history.” Other collaborations between the two women include productions of Brecht’s The Good Woman of Szechuan and Henrik Ibsen‘s Hedda Gabler, the latter adapted for television.

Shaw appears in The Waste Land at Wilton’s Music Hall in January 2010 and in a Royal National Theatre revival of London Assurance in March 2010. In November 2010, She stars in Ibsen’s John Gabriel Borkman at the Abbey Theatre, Dublin alongside Alan Rickman and Lindsay Duncan. The play is also staged in New York’s Brooklyn Academy of Music in 2011.

Shaw appears in season four of American TV show True Blood. Her character, Marnie Stonebrook, has been described as an underachieving palm reader who is spiritually possessed by an actual witch. Her character leads a coven of necromancer witches who threaten the status quo in Bon Temps, erasing most of Eric Northman‘s memories and leaving him almost helpless when he tries to kill her and break up their coven.

In 2012, Shaw appears in the Royal National Theatre revival of Scenes from an Execution by Howard Barker.

The world’s largest solo theatre festival, United Solo Theatre Festival, recognizes her performance in The Testament of Mary on Broadway with the 2013 United Solo Special Award.

In 2018 Shaw begins portraying Carolyn Martens, head of the MI6 Russian Desk, in BBC America‘s Killing Eve, for which she wins the BAFTA Award for Best Actress in a Supporting Role in a Television Series. Later the same year, she plays a senior MI6 officer in Mrs. Wilson.