Background
Fiennes was born in Salisbury, Wiltshire, England in 1970, the son of novelist Jennifer Lash and photographer Mark Fiennes. The youngest of six siblings, his elder siblings are actor Ralph Fiennes, filmmakers Sophie Fiennes and Martha Fiennes, composer Magnus Fiennes, and conservationist Jacob Fiennes, his twin brother. His foster brother, Michael Emery, is an archaeologist.
Fiennes married María Dolores Diéguez, a Swiss model, in a Roman Catholic ceremony in Tuscany in August 2009.