Joseph Alberic Twisleton-Wykeham-Fiennes was born in Salisbury, Wiltshire, to Jennifer Anne Mary Alleyne (Lash), a novelist, and Mark Fiennes, a photographer. He is one of six children. Four of his siblings are also in the arts: Ralph Fiennes, an actor; Martha Fiennes, a director; Magnus Fiennes, a musician; and Sophie Fiennes, a producer. He is of English, Irish, and Scottish origin.
