Igor Sikorsky
18891972
American aviation pioneer from the Russian Empire who designed the world's first successful four-engine aircraft and four-engine bomber, also excelling in helicopter design
3 coffadwriaeth wedi'u canfod
Gweld pob un yn Bywydau gyda'r hidlydd wedi'i gymhwyso19191972
American baseball player who broke Major League Baseball's color line in 1947 and became a leading voice in the civil rights movement
