[1] Mabel Louise Clark was born on 1 June 1885 at "Ferry House", Sunbury on Thames, Middlesex, one of five children of Louisa Chapman (1866–?)

She also played the part of a distraught nursemaid in Hepworth's 1905 film, Rescued By Rover, which was a global success, with 395 prints sold for worldwide distribution.

[6] After her marriage she and Whitten left the Hepworth Company to set up their own Stamford Hill Film Cleaning Company, where, using the skills they had acquired working for Hepworth they were involved in repairing perforations and tears and cleaning films.

[5] Around 1913 the couple moved to Dublin where Whitten set up his own film-making facilities in offices at 17 Great Brunswick Street.

As she had been with the Hepworth Company, Clark was involved in every aspect of the business including running it for seven months while her husband was in the United States.