 Kingsley's youngest sister's daughter, Anna McNeill, participated with her mother in attempting to block Anna Jai from inheriting Kingsley's property.McNeill served as the model for her son, the artist James Whistler, in his "", popularly known as "Whistler's Mother".Kingsley Beatty Gibbs' brother was George Couper Gibbs, a planter in St. Johns County, south of Fort George Island near St. Augustine.