Roosevelt started the tradition of prayers by clergy at Presidential Inaugurations.
His second inauguration, January 20, 1937, had an opening prayer by Episcopal U.S. Senate Chaplain ZeBarney Thorne Phillips and closed with a benediction by Catholic Father John A. Ryan.
At his third inauguration, January 20, 1941, Episcopal U.S. Senate Chaplain ZeBarney Phillips gave the opening invocation and Catholic Father Michael J. Ready gave the closing benediction.
At his fourth inauguration, January 20, 1945, due to the nation being at war, the event was not held at the Capitol but at a more secure location off the South Portico of the White House.
Episcopal Bishop Agnus Dun gave the opening invocation and Catholic Monsignor John A. Ryan gave the closing benediction.