John Martin Coates from Portaferry Ireland was Surgeon Lieut. Colonel, Indian Medical Service. He became the Principal and Professor of Medicine at the Medical College in Calcutta. He married Sophie Harper in India and their children were born in India - Matilda Sophia Coates , Dr Henry Horiton Cole Coates , John Martin Coates, Williamina Coates , Nora Coates , Florence Campbell Coates , Charles Foster Coates, Violet Mary Coates. Does this connect with anyone's family tree. Regards Noeline