Rocky Marciano
19231969
American heavyweight boxing champion who remains the only undefeated heavyweight in history
6 choffadwriaeth wedi'u canfod
Gweld pob un yn Bywydau gyda'r hidlydd wedi'i gymhwyso18881969
German-American experimental physicist who won the 1943 Nobel Prize for developing molecular beam techniques and discovering the proton's magnetic moment