Background
Marr was born in the Sydney suburb of Petersham and educated at Fort Street Model School, Newington College (1895) and Sydney Technical College, graduating as an electrical engineer
Marr was born in the Sydney suburb of Petersham and educated at Fort Street Model School, Newington College (1895) and Sydney Technical College, graduating as an electrical engineer
He joined the state Postmaster-General"s Department and transferred to the federal Postmaster-General"s Department in 1901. He took an early interest in radio broadcasting and developed this interest while in military service with the first Australian Imperial Force during World War I in Mesopotamia. In October 1927, he urged the Australian parliament not to highlight the past mistreatment of indigenous Australians, in order to preserve the White Australia policy:
To review the past () would be to unjustly misrepresent the conditions that obtain today.
Marr lost the seat of Parkes to Edward McTiernan in 1929.
Marr held a number of cabinet posts in the Bruce and Lyons governments, including Home and Territories, Works and Railways, Health and Repatriation.
He received a Military Cross in 1917 and a Distinguished Service Order in 1918. Marr commenced his political career by winning the Nationalist Party endorsement for the seat of Parkes from the incumbent Bruce Smith, and easily won the seat in the 1919 general election. He was made a knight of the Royal Victorian Order in 1934 for his role in organising the Australian tour of the Duke of Gloucester.
He was a member of the Australian House of Representatives and government minister. However, he regained Parkes at a 1931 by-election when McTiernan resigned to join the High Court of Australia and held the seat until 1943, initially as a Nationalist and later as a member of the United Australia Party.