Who is the oldest of Odessa Grady Clay's two sons?
Odessa Grady Clay Odessa Lee Clay (née O'Grady; February 12, 1917 – August 20, 1994) was the mother of three-time World Heavyweight Champion Muhammad Ali and Rahman Ali, and the grandmother of Laila Ali. She married Cassius Marcellus Clay, Sr. in the 1930s and worked for some time as a household domestic to help support her young children.
Robert Todd Lincoln Robert Todd Lincoln (August 1, 1843 – July 26, 1926) was an American politician, lawyer, and businessman. He was the first son of President Abraham Lincoln and Mary Todd Lincoln. Born in Springfield, Illinois, he was the only one of Lincoln's four sons to live an adult life (his brother Tad Lincoln died shortly after his 18th birthday), and the only member of the family to survive into the 20th century.