He is of one quarter British Isles (English, Northern Irish, remote Welsh), one quarter Ashkenazi Jewish (from Latvia and Poland), one quarter Algerian-Kabyle, and one quarter German, descent.
Half-brother of Barnabé Nuytten (born on 1979), Ronan Cal Day-Lewis (born on 14 June 1998) and Cashel Blake Day-Lewis (born in May 2002).
His father Daniel Day-Lewis was the first non-American actor to win two Academy Awards for best actor.
Gabriel-Kane Day Lewis is an actor and the son of the illustrious actors Daniel Day Lewis and Isabelle Adjani. His stepmother is the famous writer and director, Rebecca Miller, the daughter of Arthur Miller.