Clementina Mostyn (died 1937) (1856–1937) Parents Frances Fraser Sir Pyers Mostyn, 8th Baronet Children Reginald de Trafford Elfrida de Trafford Ermyntrude de Trafford Geoffrey de Trafford Siblings Margaret Mostyn George Mostyn Thomas Mostyn Nicholas Mostyn Gertrude Mostyn Mary Mostyn Sir Pyers Mostyn, 9th Baronet Charlotte Mostyn Francis Mostyn Partners Sigismund de Trafford