Muhammad Ali, born Cassius Clay on Jan. 17, 1942, is regarded as one of the top professional boxers of all time. He was an activist who spent his life fighting for and enacting change.

Muhammad Ali was a father of nine children: Maryum, Rasheda, Jamillah, Muhammad Ali Jr., Khaliah, Miya, Hana, Laila and Asaad Amin. Here’s everything to know about the boxing legend's kids.

OP-ED: In honor of his 83rd birthday, Lonnie Ali — Muhammad Ali’s widow — shares a groundbreaking study revealing the trends that shape compassion in America.

The making of a champion: Ali’s early years American Heavyweight boxer, Cassius Clay (later Muhammad Ali, 1942 – 2016), making a fist as he lies on his hotel bed, London, 27th May 1963.

Ali and Frazier first met at Gleason's Gym, in Brooklyn, New York, in 1966. Muhammad Ali was already an established champion, while Frazier was climbing the ranks, after winning gold at the 1964 ...

Muhammad Ali, left, Liberace and Hulk Hogan pose for photos ahead of Wrestlemania I on March 29, 1985, at Madison Square Garden. Ali is being inducted into the WWE Hall of Fame later this year.

Ali quickly ingratiated himself with the media with his boastful claims and fresh, stylish way of speaking. He told Sports Illustrated in 1961: "Most of them [other boxers] … can fight almost as ...

Foreman attended Ali's memorial and funeral service when Ali died in 2016. But the relationship got off to a rocky start in 1974 leading up to "The Rumble in the Jungle,'' their fight in Zaire.

But luckily, the 23-year-old grandson of the late legendary fighter Muhammad Ali has always loved the sport, as well as his family’s deep ties to it. “I was born for this,” Walsh tells PEOPLE.

Opening in November 2005, the Muhammad Ali Center was 20 years in making. Its development was spearheaded by Ali and his wife Lonnie, who wanted a place to not only celebrate his career and life ...