The former child actor passed away at his home in Lincolnshire, England on 6 April (10) after losing his battle with pancreatitis.
Born James Aubrey Tregidgo in Austria in 1947, the Brit scored his first role when he was just a schoolboy, handpicked by director Peter Brook to portray Ralph in the classic 1963 movie adaptation.
He went on to carve out a career on the stage and in British television, later landing a part in 1970s U.K. series Bouquet of Barbed Wire and its spin off, Another Bouquet, while his other film credits include 1983's The Hunger and Richard Attenborough's apartheid drama Cry Freedom in 1987.
Aubrey also starred in British detective series Dalziel and Pascoe, Silent Witness and Heartbeat, and appeared briefly as a child on Broadway, in the 1962 theatre flop Isle of Children, which closed after just 11 performances.
He is survived by his sister Janet Fleming, and his daughter Sarah, from a previous marriage, reports the New York Times.