Jaap Eden
Jacobus Johannes Jaap Eden was a Dutch athlete. He is the only male athlete to win world championships in both speed skating and bicycle racing two women have done so .
Jaap Eden was born in Groningen to Johannes Eden and Maria Baale. Edens mother died of complications from his birth. His father, a gymnastics teacher, could not take care of the baby alone, and sent him to his grandparents, who owned a hotel near Santpoort. As a boy, Eden enjoyed running in dunes near his grandparentss home, gymnastics and, in the winter, skating. His speed and skating technique were noticed by the best Dutch skater at the time, Klaas Pander, and he invited the 15yearold Eden to join him training.
Source: Wikipedia