Charles Home Sinclair (1837-1910) (1837–1910) Parents Euphemia Buchan John Sutherland Sinclair Children Euphemia Helen Sinclair Mary Esmé Sinclair Siblings James Augustus Sinclair, 16th Earl of Caithness Thomas Buchan Sinclair Nicola Helen Meredith Sinclair Euphemia Margaret Sinclair Partners Mary Louisa Paton