Question: When was the younger brother of Henry George Steinbrenner IV born?

Context articles: Robert Nederlander
Henry George Birthplace
Edward McGlynn
Hal Steinbrenner
Sir George Grey, 1st Baronet
Kinsman Stable
Qvarqvare IV Jaqeli
Joe Molloy
Baron Calthorpe
Hank Steinbrenner

Robert Elliot Nederlander, Sr. (born April 10, 1933) is an attorney and former president of the Nederlander Organization, which has been involved in the live theatre industry since the early 20th century.
 He is also the former managing general partner of the New York Yankees.
 He served in this role during the suspension of George Steinbrenner.
Henry George Birthplace is a historic home located in the Washington Square West neighborhood of Philadelphia, Pennsylvania.
 It was built in 1801, and is a three story brick rowhouse in a late Federal style.
 The layout is typical of a Philadelphia rowhouse with a "front building" and "back building."
 It also has a "piazza."
 Noted journalist and philosopher Henry George (1839-1897) was born in the house in 1839, and resided there until 1849.
Father Edward McGlynn (September 27, 1837 – January 7, 1900), American Roman Catholic priest and social reformer, was born in New York City of Irish parents.
 He was controversial in Catholic circles for his acceptance of public schools.
 He actively promoted the political goals of Henry George and the "Single Tax" movement; he campaigned for George who ran for mayor in 1886.
 He was censured and excommunicated between 1887 and 1892 on the charges of disobedience and suspicion of socialist leanings, due to his support of Henry George.
 Conservative Catholic leaders were outraged by his liberalism.
Harold Zieg Steinbrenner (born December 3, 1969) is principal owner, managing general partner and co-chairman of the New York Yankees.
 He and his brother Hank inherited the team from their father, George Steinbrenner, who died in 2010.
Sir George Grey, 1st Baronet, {'1': ", '2': ", '3': ", '4': "} (10 October 1767 – 3 October 1828) was a British Royal Navy officer.
 He was born at the family home of Fallodon, Northumberland on 10 October 1767, the third son of Charles Grey, 1st Earl Grey (1729–1807) and Elizabeth Grey (1744–1822), and younger brother of Charles Grey, 2nd Earl Grey and General Sir Henry George Grey.
 He served as a naval officer in the Royal Navy from the age of 14, and was on active service from 1781 to 1804, during the latter years of the American war of Independence, during the French Revolutionary War and the first year of the Napoleonic War.
 He served as Flag Captain for John Jervis, Earl of St Vincent and later as Master and Commander of the Mediterranean Fleet.
 He also served as Flag Captain for King George III on his royal yacht.
 From 1804 to 1806, he was Commissioner at Sheerness Dockyard, and from 1806 until his death on 3 October 1828 he was Commissioner at Portsmouth Dockyard
Kinsman Stable is the nom de course for the American Thoroughbred racing stable of George Steinbrenner, best known as the owner of the New York Yankees Major League Baseball team.
 A director and former president of the Florida Thoroughbred Breeders' and Owners' Association, Steinbrenner became involved with the sport in the early 1970s and owns the 860 acre Kinsman Stud Farm in Ocala, Florida where his Thoroughbreds are stabled.
  His son Henry and daughter Jessica are both involved in the business.
 .
Qvarqvare IV Jaqeli (Georgian: ყვარყვარე IV ჯაყელი ) (died 1581) was a Georgian Prince and Atabeg of Samtskhe-Saatabago, ruling nominally in 1573–1581.
 He was member of the Jaqeli family and the son of Kaikhosro II Jaqeli.
 During his nominal reign Meskhetian lords revolted several times against Jaqelian rule.
 Uprisings were suppressed by Ottomans.
 In 1578 Ottomans started new war against Safavid Persia for the hole territory of Caucasus.
 Lala Mustafa Pasha invaded Georgia.
 Qvarqvare IV obeyed him.
 Pasha had decided to sent Qvarqvare and his younger brother Manuchar to Constantinople for recognizing Ottoman absolute rule in Samtskhe.
 Qvarqvare left the government to his mother, Dedisimedi and went to the capital of the Ottoman Empire.
 In 1579 by the order of Sultan Murad III Ottomans divided Samtskhe-Saatabago into eight Sanjaks and established Childir Eyalet on the lands of Meskheti.
 Qvarqvare IV was appointed as Christian ruler of Childir Eyalet, but his brother Manuchar converted to Islam under the name of Mustafa and became the Ottoman Pasha.
 Qvarqvare died childless in 1581 and was succeeded by his muslim brother Manuchar II.
Joseph Anthony Molloy (born March 13, 1961 in Tampa, Florida) is the former managing general partner of the New York Yankees.
 He served in this role during the suspension of George Steinbrenner.
Baron Calthorpe, of Calthorpe in the County of Norfolk, was a title in the Peerage of Great Britain.
 It was created in 1796 for Sir Henry Gough, 2nd Baronet, who had previously represented Bramber in Parliament.
 Born Henry Gough, he had assumed the additional surname of Calthorpe upon inheriting the Elvetham and Norfolk estates of his maternal uncle, Sir Henry Calthorpe, in 1788.
 The Baronetcy, of Edgbaston in the County of Warwick, had been created in the Baronetage of Great Britain on 6 April 1728 for Lord Calthorpe's father Henry Gough, who represented Totnes and Bramber in the House of Commons.
 He was the husband of Barbara, daughter of Reynolds Calthorpe.
 Three of Lord Calthorpe's sons, the second, third and fourth Barons, both succeeded in the titles.
 The latter sat as a Member of Parliament for Hindon and Bramber.
 In 1845 he assumed by Royal licence for himself the surname of Gough only.
 His eldest son, the fifth Baron, represented East Worcestershire in Parliament as a Liberal.
 The fifth Baron's younger brother, the seventh Baron (who succeeded his elder brother, the sixth Baron), was a Lieutenant-General in the Army.
 The latter's son, the eighth Baron, was succeeded by his grandson, the ninth Baron.
 The titles became extinct on the death of the ninth Baron's younger brother, the tenth Baron, in 1997.
Henry George "Hank" Steinbrenner IV (born April 2, 1957) is part-owner and co-chairman of the New York Yankees.
 He is the older brother of principal owner and managing general partner Hal Steinbrenner.