Born: 1942-04-17David Bradley (born 17 April 1942) is an English actor. He is most widely known for portraying Argus Filch in the Harry Potter film series, Walder Frey in the HBO fantasy series Game of Thrones, and Abraham Setrakian in the FX horror series The Strain. He was awarded a Olivier Award in 1991 for his supporting role in King Lear at the Royal National Theatre.