George Felix Standish Sinclair (1861-1943) (1861–1943) Parents Sir John Sinclair, 3rd Baronet Emma Isabella Harriet Standish Children Olive Margaret Camilla Sinclair Dorothy Emma Olivia Sinclair Algernon Ronald Tollemache Sinclair Siblings unknown daughter Sinclair Clarence Granville Sinclair Amy Camilla Sinclair Nina Mary Adelaide Sinclair Partners Margaret Sinclair