Margaret Jenkins believed her father was “just a dad” until she discovered newspaper clippings after her mother’s death.
Saxon Jenkins, who died in 1989, made paintings of Welsh castles to go in a miniature house given to the Queen when she was six in 1932.
His art has been enjoyed by generations of royal children.
He stopped painting after starting a family, and his daughter found out about his work when she found newspaper clippings.
Margaret is now trying to find out more about the paintings.