R. D. Blumenfeld
Ralph David Blumenfeld (pen-name R.D.B., 7 April 1864 – 17 July 1948) was an American-born journalist, writer and newspaper editor who is chiefly notable for having been in charge of the British newspaper "Daily Express" from 1902 to 1932.
Mitch Morris
Mitch Morris( born October 15, 1979) is an American actor.
His full birth name is John Mitchell Morris.
Allan Elliot
Allan John Elliot (1 February 1906 − 5 January 1973), sometimes Elliott, was a New Zealand athlete, who represented his country in the sprint events at the 1930 British Empire Games in Hamilton, Ontario, and the 1932 Olympic Games in Los Angeles.
John Elliot Cowdin
John Elliot Cowdin( March 22, 1858 – January 7, 1941) was an American polo player.
John Elliot (antiquary)
John Elliot( 1725 – 1782) was an English lawyer and antiquary.
John Elliot (songwriter)
John Elliot( also known as Jack Elliot, John M. Elliot, John M. Elliott and Jack Elliott)( 7 May 1914 – 3 January 1972) was an American songwriter, credited with having written over 600 songs for motion pictures.
Gilbert Elliot-Murray-Kynynmound, 4th Earl of Minto
Gilbert John Elliot- Murray- Kynynmound, 4th Earl of Minto( 9 July 18451 March 1914) was a British aristocrat and politician who served as Governor General of Canada, the eighth since Canadian Confederation, and as Viceroy and Governor- General of India, the country's 17th.
John Elliot (railway manager)
Sir John Elliot (6 May 1898 – 18 September 1988) was a British transport and railway manager.
Born John Elliot Blumenfeld, he was the son of the "Daily Mail" news editor R. D. Blumenfeld (who later became managing editor of the "Daily Express".)
He changed his surname to Elliot (his mother's surname) in March 1923 on the advice of Lord Beaverbrook.
John Elliott (British boxer)
John Elliot( 12 October 1901 – 3 July 1945) was a British middleweight boxer who competed in the 1920s.
Ali Rahuma
Ali Khalifa Rahuma( born May 16, 1982) is a Libyan football midfielder who's nationality is Libyan.
He currently plays for Al- Ittihad, and is a member of the Libya national football team.

Question: What nationality is John Elliot (Railway Manager)'s father?
Answer: American