While working as a foreign correspondent of The Times in Constantinople, he exposed The Protocols of the Elders of Zion as an antisemitic plagiarism, fraud and hoax.
He studied at Haileybury and Oriel College receiving a bachelor's degree from Oxford University in March 1900.
His uncle Sir Robert Windham Graves had been British Consul in Erzurum (1895) and financial adviser to the Turkish government (1912) and worked for Civil Intelligence in Cairo during the same period.
[2] His most monumental work was 22 of the 24-volume quarterly review of the events of and participants in World War II written during the conflict, the first two volumes being compiled by Sir Ronald Storrs.
[4] Graves specialised in butterflies (Lepidoptera) of Syria, Lebanon, Iraq, and Palestine, often working with Robert Eldon Ellison, a career diplomat and fellow Irishman (born in Wingstown, near Dublin).
He is commemorated in the subspecies of the Brimstone butterfly found in Ireland, Gonepteryx rhamni gravesi Huggins, 1956.