Hitler was the ruler of Germany 1933-1945.
Disney was president of The Walt Disney Company, establishing Buena Vista film distribution division in 1953 and opening Disneyland in 1955.
Kermit Roosevelt founded the Roosevelt Steamship Company and the United States Lines after WWI. He and his brother Ted undertook Asiatic hunting expeditions in 1925 and 1928, which Kermit commemorated in two books. He negotiated a commission in the British Army in 1939 and was wounded at the Battle of Narvik. He received a medical discharge in 1941 due to malaria.
These were very busy men, either in the public eye or surrounded by staff and co-workers. There is no possible way they could be the same person, no matter how much money was involved.