Lady Mildred Denison (died 1953) (d. 1953) Parents William Denison, 1st Earl of Londesborough Lady Edith Somerset Children William Cooke Sir Charles Arthur John Cooke, 11th Bt. Siblings Lady Lilian Denison Lady Ida Denison unknown daughter Denison Lady Edith Denison William Denison, 2nd Earl of Londesborough Partners Sir William Henry Charles Wemyss Cooke