Conversation so far:
When was Muhammad Ali born?
Cassius Marcellus Clay Jr. was born on January 17, 1942
Where was Muhammad Ali born?
Cassius Marcellus Clay Jr. was born on January 17, 1942 in Louisville, Kentucky
Who were Muhammad Ali's parents?
Muhammad Ali's father was a sign and billboard painter, and his mother, Odessa O'Grady Clay, was a domestic helper.

Question: did he know his mother
Self-contained rewrite: Did Muhammad Ali know his mother?