Simplify the following text for a Grade 9 native English-speaking person.
Original: He is the brother of actor Ralph Fiennes , filmmakers Sophie Fiennes and Martha Fiennes , composer Magnus Fiennes and his twin brother Jacob Fiennes , a conservationist .
Simplified: His brothers and sister are Ralph Fiennes , Sophie Fiennes , Martha Fiennes , Magnus Fiennes and his twin brother , Jacob Fiennes .