FDR has his mother's name, Delano, for his middle name. Theodore Roosevelt did not have a middle name.
Delano
Theodore Roosevelt, 26th US President, had no middle name.
The New Deal
Middle America: Panama, Cuba and Venezuela.
Eleanor Roosevelt's middle name was Eleanor because her whole name was Anna Eleanor Roosevelt.
President
The middle name of President Kennedy was Fitzgerald.
President Obama has the middle name of Hussein.
An internet search did not find any US President with Milton as a middle name. President Nixon's middle name was Milhous.
There was no President UlyssesUlysses was the first name of President Grant; his middle initial was "S" which did not stand for anything. His full middle name was "S"
wallace