- Category : 1887-births
- Type : MGP
- Profile : 1/3 - Investigating / Martyr
- Definition : Single
- Incarnation Cross : RAX The Sphinx 2
He was married on 25 October 1913 to Mary Ann Dolling Sanders (1889–1974), who was a novelist under the pseudonym of Ann Bridge. They had two daughters and one son.
He was Minister to Hungary between 1939 and 1941. He was British ambassador to the Polish government in exile in London during World War II. From July 1945 until May 1947, he was Ambassador to Portugal.
O'Malley died on 16 April 1974.