Linda Blackford: Some of Muhammad Ali’s family members believe there is a direct link between him and Sen. Henry Clay that’s proven by DNA. Others want more proof.

Linda Blackford: Some of Muhammad Ali’s family members believe there is a direct link between him and Sen. Henry Clay that’s proven by DNA. Others want more proof.

Read TIME's Mar. 22, 1963, cover story about Muhammad Ali, then Cassius Clay. Read TIME's Mar. 22, 1963, ... His son, Cassius Marcellus Clay Jr., has just turned 21 and has far larger ambitions.

Boxing icon Muhammad Ali was born Cassius Marcellus Clay Jr in 1942, in Louisville, Kentucky. He and his father were named after white farmer and abol­­­itionist Maj-Gen Cassius Marcellus Clay.

Timeline: Cassius Marcellus Clay Jr. to Muhammad Ali to The Greatest. Complete coverage of Muhammad Ali. ... They had one other son, Rudy, who took the name Rahaman Ali in the 1960s.