Max Euwe
Machgielis "Max" Euwe (Dutch: [ˈøːʋə]; May 20, 1901 – November 26, 1981) was a Dutch chess player, mathematician, author, and chess administrator. He was the fifth player to become World Chess Champion, a title he held from 1935 until 1937. He served as President of FIDE, the World Chess Federation, from 1970 to 1978.
Source: Wikipedia