Wallop died in Big Horn, Wyoming, at the age of seventy-eight of a long illness He was survived by fourth wife, Isabel Brooke Thomasson Ferguson Wallop and his four children from the first marriage.<ref name=NYTobit/> | Wallop died in Big Horn, Wyoming, at the age of seventy-eight of a long illness He was survived by fourth wife, Isabel Brooke Thomasson Ferguson Wallop and his four children from the first marriage.<ref name=NYTobit/> |