Donald Daniel Houston was a Welsh actor whose first two films—The Blue Lagoon (1949) with Jean Simmons, and A Run for Your Money (1949) with Alec Guinness—were highly successful. Later in his career he was cast in military roles and in comedies such as the Doctor and Carry On series.

The Blue Lagoon is a 1949 British coming-of-age romance and adventure film directed and co-produced by Frank Launder and starring Jean Simmons and Donald Houston. The screenplay was adapted by John Baines, Michael Hogan, and Frank Launder from the 1908 novel The Blue Lagoon by Henry De Vere Stacpoole. The original music score was composed by Clifton Parker and the cinematography was by Geoffrey Unsworth.