Question: What is the birthdate of this mother of three-time Heavyweight Champion, who was married to Cassius Marcellus Clay Sr.?

Context paragraphs:
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".

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.

A.k.a. Cassius Clay: A.k.a. Cassius Clay (styled as a.k.a. Cassius Clay) is a 1970 boxing documentary film about the former heavyweight champion Muhammad Ali.

UCW-Zero Heavyweight Championship: The UCW-Zero Heavyweight Championship is the primary singles championship title in Ultra Championship Wrestling-Zero.  It was first won by Blitz Mason in March 2003 and defended throughout the state of Utah, most often Salt Lake City, Utah, but also in the Rocky Mountains and the Southwest United States.  The title was formerly recognized by AWA Superstars from 2005 to 2007, and then by the National Wrestling Alliance when the promotion became an NWA territory that same year.  On February 26, 2011, the UCW-Zero Heavyweight Championship was around the waist of Los Mochis Paco until it was stolen by Tyler Cintron after Junior X attacked Paco.  Later, Paco retrieved his belt back from Tyler Cintron.  The following show however, Tyler Cintron walks into the ring with his own UCW-Zero Heavyweight Championship.  UCW Director Blitz decide to make a Triple Threat TLC Match to determine the Undisputed UCW-Zero Heavyweight Champion which took place on June 4, 2011.  Los Mochis Paco was the victor to become the Undisputed Heavyweight Champion.  It would however be short lived because Los Mochis Paco was attacked by Black Out in the back and broke his leg and was unable to defend it.  Two Weeks later on June 18, 2011, Director for the night and Former 4 time UCW-Zero Heavyweight Champion Martin Casaus made a Gauntlet Match to determine a New Champion.  In the end, it was Junior X that prevailed and became the NEW UCW-Zero Heavyweight Champion.  2011 Rocky Mountain Rumble Champion Kid Kade went on to win the UCW-Zero Heavyweight Champion after defeating Junior X at "Meltdown Mayhem" on August 13, 2011.

Cassius Marcellus Clay (politician): Cassius Marcellus Clay ( ; October 19, 1810 – July 22, 1903), nicknamed the "Lion of White Hall", was a Kentucky planter, politician, and emancipationist who worked for the abolition of slavery.  He freed the slaves that were handed down as his inheritance from his father.  Those freed slaves were allowed to stay and were paid a wage.  He was appointed by President Abraham Lincoln as the United States minister to Russia during the American Civil War, and is credited with gaining Russian support for the Union.

The Soul of a Butterfly: The Soul of a Butterfly is the autobiography of Muhammad Ali, born Cassius Marcellus Clay Jr., a former heavyweight boxer who was a three time World Heavyweight Champion and is the greatest heavyweight of all time.

Muhammad Ali: Muhammad Ali ( ; born Cassius Marcellus Clay Jr.; January 17, 1942 – June 3, 2016) was an American professional boxer and activist.  He is widely regarded as one of the most significant and celebrated sports figures of the 20th century.  From early in his career, Ali was known as an inspiring, controversial, and polarizing figure both inside and outside the ring.

Brutus J. Clay: Brutus Junius Clay (July 1, 1808 – October 11, 1878) was a U.S. Representative from Kentucky, and a son of Green Clay.  His brother Cassius Marcellus Clay also was a politician in the state, and they both joined the Unionist Party at the time of the American Civil War.

Facing Ali: Facing Ali is a 2009 documentary directed by Pete McCormack about Muhammad Ali (born Cassius Marcellus Clay, Jr. in Louisville, Kentucky) as told from the perspectives of some of the notable opponents he faced during his career: George Chuvalo, Sir Henry Cooper, George Foreman, "Smokin'" Joe Frazier, Larry Holmes (a former sparring partner of Ali), Ron Lyle, Ken Norton, Earnie Shavers, Leon Spinks and Ernie Terrell.

Botherum: Botherum was built for Madison C. Johnson in 1850 or 1851 (sources vary) by John McMurtry, a well-known architect and builder based in Lexington.  The house was intended, in part, as a shrine to Johnson's late wife Sally Ann, a sister of Cassius Marcellus Clay who died giving birth in 1828.

Supporting paragraphs: Cassius Marcellus Clay Sr. Odessa Grady Clay
Answer: February 12, 1917