Harry Beresford began his acting career in 1885, as a member of the chorus of Little Jack Sheppard at the Gaiety Theatre, London.

In August 1922, he created the role of the alcoholic Clem Hawley in Don Marquis's comedy The Old Soak, a character Beresford made famous and played for two years.

[1] Between 1926 and 1938, Beresford appeared as a supporting actor in more than 50 Hollywood films, including Doctor X (1932), The Sign of the Cross (1932), Dinner at Eight (1933), I Cover the Waterfront (1933), David Copperfield (1935) and Follow the Fleet (1936).

[4] They divorced on 10 February 1909, in New York City, and Dunn was awarded sole custody of their young daughter, Dorothy.

[1] Dunn, who likewise worked in Hollywood pictures in her later years, recalled testing for the role of a bullied wife in a 1935 film.