Question: Who is the oldest of Odessa Grady Clay's two sons?

Context paragraphs:
Odessa Ice Cream Company Building: Odessa Ice Cream Company Building is a historic commercial building and ice cream factory located at Odessa, Lafayette County, Missouri.  It was built in 1929, and is a two-story, three bay by five bay, clay block and brick building.  The rear section was raised to two stories about 1946.  Odessa Ice Cream was the official ice cream at the Missouri State Fair in the 1930s.

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.

Cassius Marcellus Clay Sr.: Cassius Marcellus Clay (November 11, 1912 – February 8, 1990) was an American painter and musician.  He was the father of three-time World Heavyweight Champion Muhammad Ali and Rahman Ali, and the grandfather of Laila Ali.  He married Odessa Lee O'Grady in the 1930s and worked as a painter and a musician.  He was described as "a handsome, mercurial, noisy, combative failed dreamer" and a "hard-drinking, skirt-chasing dandy of a daddy".  His son Muhammad Ali described him as "the fanciest dancer in Louisville".

Grady Clay: Grady Clay (1916 – March 17, 2013) was an American journalist specializing in landscape architecture and urban planning.

Viscount Guillamore: Viscount Guillamore, of Caher Guillamore in the County of Limerick, was a title in the Peerage of Ireland.  It was created on 28 January 1831 for Standish O'Grady, Attorney-General for Ireland and Lord Chief Baron of the Exchequer for Ireland.  He was made Baron O'Grady, of Rockbarton in the County of Limerick, at the same time, also in the Peerage of Ireland.  His son, the second Viscount, fought at the Battle of Waterloo and represented County Limerick in Parliament.  Four of his sons, the third, fourth, fifth and sixth Viscounts, all succeeded in the peerages.  The sixth Viscount was succeeded by his first cousin once removed, the seventh Viscount.  He was the grandson of the Honourable Waller O'Grady, QC, younger son of the first Viscount.  He died childless and was succeeded by his first cousin, the eighth Viscount.  He was the son of James Waller O'Grady, younger son of the Honourable Waller O'Grady.  Lord Guillamore died unmarried and was succeeded by his younger brother, the ninth Viscount.  The titles went unclaimed on his death in 1955.

Rahman Ali: Rahman Ali (born Rudolph Valentino Clay ; July 18, 1943) is an American former heavyweight boxer.  He is the younger brother of the late Muhammad Ali.

Edward O'Grady II: Edward O'Grady II (August 20, 1948 – October 20, 1981) was a Nyack police officer who was killed in connection with a 1981 robbery of a Brinks armored car (see Brinks Robbery (1981)).  He left behind a wife and three children.  O'Grady was born in Nyack, New York.  After graduating high school, he joined the United States Marine Corps and served two tours of service in the Vietnam War.  O'Grady joined the Nyack Police department after his discharge and also worked as a volunteer fire fighter with the Nyack fire department.  In 1976, O'Grady was promoted to sergeant, the youngest person in the history of Rockland County, New York to achieve that rank.  At the time of his death, he was enrolled at St. Thomas Aquinas College and was close to receiving his bachelor's degree in criminal justice.  He was survived by his wife and three children.  His son, Edward J. O'Grady III, went on to join the United States Navy, graduating from the United States Naval Academy in 1997.

Stories of divine birth in the eighteenth dynasty: Hatshepsut’s royal lineage was established through her parents, Thutmose I her father and The Great Royal Wife Ahmose, her mother.  Thutmose I had two sons and a daughter, Amenmose, Wadjmose and Hatshepsut, through Ahmose.  Egyptian hierarchy established the eldest sons as heirs to the throne; however, with the death of these two sons at an early age, it is still possible to produce a son through a secondary wife or lesser wife.  Mutnofret, Thutmose I’s secondary wife gave birth to a son, Thutmose II, giving him lineage to the throne.  To legitimize Thutmose II’s reign, he married his half-sister Hatshepsut, who carried the royal Ahmose blood line.  Through this marriage Hatshepsut was given her royal titles as Great King’s Wife and God’s Wife of Amun that gave her royal responsibilities to appear and participate in cult rituals.

'68 (film): The father escaped the Soviet invasion of Budapest and now runs a Hungarian restaurant that is not doing well financially.  The younger of his two sons is gay and struggling with coming out.  His dad disowns him when he finally does.  The older son is involved in the counterculture, gets kicked out of college, buys a motorcycle, starts dating a Maoist, and is also disowned by his father.  The older of the sons runs afoul of an outlaw motorcycle club; the younger of the two sons gets drafted but is rejected because of his homosexuality.  The older one joins his younger brother in a gay rights protest.

Jonathan Clay (musician): Singer-songwriter Jonathan Clay grew up in Magnolia, Texas.  He released his first EP "Whole New Me" in 2006 on iTunes.  Atlantic Records signed Clay to a development deal in 2007.  In June 2007 Clay released his second album "Back to Good".  MTV music supervisors found his work on MySpace.  ABC Family used Clay's "After All" in "Lincoln Heights" in 2008.  Levi's and True Anthem sponsored Clay's give away of 140,000 downloads of "Acoustic Sessions" in 2008.  In 2010 Clay recorded "Everything She Wants" with producer Kevin Kadish.  "Gypsy Woman", a cut from that album, was used in the U.S. television series "Sons of Anarchy" in 2011.  In late 2010 Clay formed a new band called Jamestown Revival.  The duo teamed Clay with his childhood friend Zach Chance and within six months of forming the band the duo were featured in "Rolling Stone" magazine for the Cover of the Rolling Stone contest.  "Heart on Fire", a song featuring Clay's vocals, was featured in the 2012 comedy "LOL" starring Miley Cyrus, Demi Moore, Ashley Greene, Adam Sevani, and Douglas Booth.  Clay sang three additional songs for the film.

Supporting paragraphs: Odessa Grady Clay Rahman Ali
Answer: Muhammad Ali