Mary Elizabeth Potter (1849-1923) (1849–1923) Parents Lawrencina Heyworth Richard Potter Children William Heyworth Playne Siblings Lawrencina Potter Georgina Potter Richard Potter Beatrice Webb Catherine Courtney, Baroness Courtney of Penwith Margaret Heyworth Potter Blanche Potter Theresa Cripps Rosalind Heyworth Potter Partners Arthur Twisden Playne