Constance Idonia Violet Douglas-Hamilton (1876-1962) (1876–1962) Parents Idonia Charlotte Douglas-Hamilton Algernon Percy Douglas-Hamilton Children Constance Mary Stern John Douglas Stern Ruth Violet Stern David Hamilton Stern Eileen G. Stern Ethel Idonia Stern Siblings Edith Lena Catherine Douglas-Hamilton Ethel Jessie Douglas-Hamilton Percy Seymour Douglas-Hamilton Partners John Stern