Frances Clark is the great grand-daughter of Frederick and Elizabeth Brentnall and a custodian of the Brentnall family archive. Frederick was a Wesleyan minister, a member of the Queensland Legislative Council, a major stakeholder in 'The Telegraph' newspaper, and a director of numerous Queensland companies. Elizabeth was state president and later honorary life president of the Women's Christian Temperance Union of Queensland (WCTU) and a prominent activist in the cause of Queensland women's suffrage. Their daughter Flora was also a suffragist and an organiser for the WCTU, and was well-known for organising fund-raising functions for charity. She was a friend of Brisbane sculptor Daphne Mayo. Her daughter Noela continued the tradition of charitable work and was heavily involved in the Creche and Kindergarten Association of Queensland.