Donald Daniel Houston was born on 6 November 1923 at 10 Thomas Street, Clydach Vale, near Tonypandy in the Rhondda Valley, Glamorgan. His father, Alexander Houston, was a Scottish professional footballer, and his mother, Elsie Jones, ran a milk round in the valley. When Elsie died at the age of just 29, Donald and his younger brother, the actor Glyn Houston, were raised in Tonypandy by their grandmother while their father had to leave Wales to find work.
Donald left school to work at a local colliery before turning to acting, first treading the boards with the Pilgrim Players from 1940. His breakthrough came after the war with two films released in quick succession in 1949: 'The Blue Lagoon', opposite Jean Simmons, and 'A Run for Your Money', alongside Alec Guinness. The success of these roles established him as a leading man in British cinema through the 1950s and 1960s.
Houston went on to appear in dozens of British and Hollywood productions, including recurring roles in the 'Doctor' comedy series and in 'Carry On Jack' (1963). He also shared the screen with two fellow sons of Wales, Richard Burton and William Squire, in 'Where Eagles Dare' (1968), alongside Clint Eastwood. His final screen role came in the fantasy epic 'Clash of the Titans' (1981).
Donald Houston died in London on 13 October 1991, aged 67. The house of his birth in Tonypandy is marked today with a blue plaque, honouring one half of a Rhondda Valley acting family that also produced his brother Glyn.