Ephraim McDowel Cosgrave (18 July 1853 – 17 February 1925) was an eminent Irish physician, antiquary and writer.
He was born in Dublin, Ireland, son of William Alexander Cosgrave and Anna Maria, daughter of Dr. Ephraim McDowel.
He studied in Dublin at Trinity College, the House of Industry and the Rotunda Hospital, taking degrees in chemistry in 1870 and in medicine in 1878.
[1] He was Professor of Biology in the Royal College of Surgeons and a knight of the Order of St. John of Jerusalem.
[2] He was president of the Amateur Photographic Society and of the Irish Chess Club, indulging in two of his favourite hobbies.