Mary Frances Cooke (1789-1865) (1789–1865) Parents Bryan Cooke Children William George Margesson Marianne Harriet Margesson Reginald Whitehall Margesson John James Margesson Helena Adelaide Margesson Henry Davies Margesson Philip Davies Margesson Julia Helena Margesson Frances Margesson Emily Charlotte Margesson Partners William Margesson