Question: When does the younger son of Jacqueline Frances Stallone born?

Context paragraphs:
Secundogeniture: A secundogeniture (from Latin: "secundus" "following, second," and "genitus" "born") was a dependent territory given to a younger son of a princely house and his descendants, creating a cadet branch.  This was a special form of inheritance in which the second and younger son received more possessions and prestige than the apanage which was usual in principalities practising primogeniture.  It avoided the generational division of the estate to the extent that occurred under gavelkind, and at the same time gave younger branches a stake in the stability of the house.

Biddulph baronets: The Biddulph Baronetcy, of Westcombe in the County of Kent, is a title in the Baronetage of England.  It was created on 2 November 1664 for Theophilus Biddulph, of Westcombe Park, Greenwich, Kent, Member of Parliament for the City of London and Lichfield.  His son, Michael, the second Baronet, also represented Lichfield in the House of Commons.  This line of the family failed on the death of the second Baronet's son, Theophilus, the third Baronet, in 1743.  The late Baronet was succeeded by his first cousin once removed and namesake, Theophilus, the fourth Baronet.  He was the son of Edward Biddulph, elder son of Simon Biddulph, younger son of the first Baronet.  His grandson, Theophilus, the sixth Baronet, fought in the Battle of Waterloo and served as High Sheriff of Warwickshire in 1849.  He was succeeded by his son, Theophilus, the seventh Baronet.  He was a Deputy Lieutenant and Justice of the Peace for Warwickshire.  On the death of his son, Theophilus, the eighth Baronet, in 1948, the line of Edward, elder son of Simon Biddulph, younger son of the first Baronet, failed.  The late Baronet was succeeded by his fourth cousin once removed, Francis, the ninth Baronet.  He was the great-great-grandson of Walter Biddulph, younger son of Simon Biddulph.  As of 2008 the title is held by his grandson, Jack, the eleventh Baronet, who succeeded his father in 1986.  The three most recent baronets have resided in Australia.

Viscount Barnewall: Viscount Barnewall, of Kingsland in the Parish of Donabate in the County of Dublin, was a title in the Peerage of Ireland.  It was created on 29 June 1646 for Nicholas Barnewall, who had earlier represented County Dublin in the Irish House of Commons.  The Kingsland Barnewalls were a junior branch of the family of Baron Trimleston; Nicholas's great-grandfather Sir Patrick Barnewall had achieved political prominence through his friendship with Thomas Cromwell and done well out of the Dissolution of the Monasteries .  Nicholas was made Baron Turvey at the same time, also in the Peerage of Ireland.  His grandson, the third Viscount, was a supporter of James II and outlawed.  However, he was restored under the Treaty of Limerick.  His son, the fourth Viscount, was a Roman Catholic and consequently disqualified from taking his seat in the Irish House of Lords.  He was childless and was succeeded by his nephew, the fifth Viscount.  He was the son of the Honourable George Barnewall, younger son of the third Viscount.  He died unmarried in 1800 when the titles became dormant.  They were successfully claimed in 1814 by Matthew Barnewall, who became the sixth Viscount.  He was the great-grandson of the Honourable Richard Barnewall, younger son of the first Viscount.  However, he had no surviving male issue and on his death in 1834 the titles are considered to have become extinct.

Sinclair-Lockhart baronets: The Sinclair, later Sinclair-Lockhart Baronetcy, of Murkle in the County of Caithness and of Stevenson in the County of Haddington, is a title in the Baronetage of Nova Scotia.  It was created on 18 June 1636 for John Sinclair, with remainder to his heirs male whatsoever.  The third Baronet was a Baron of the Exchequer and member of the Privy Council of Scotland.  The fourth Baronet married Martha, daughter and eventual heiress of Sir John Lockhart of Castlehill, a Lord of Session under the judicial title of Lord Castlehill.  The eighth Baronet was an Admiral in the Royal Navy.  On the death in 1899 of his son, the ninth Baronet, the title passed to a descendant of James Sinclair, younger son of the fifth Baronet, who in 1764 had inherited the Lockhart estates and assumed the surname of Lockhart.  The tenth Baronet was a Major-General in the British Army and assumed the additional surname of Lockhart.  The eleventh Baronet was the son of George Duncan Lockhart (whose grandfather had assumed the surname of Lockhart in lieu of his patronymic), another descendant of James, younger son of the fifth Baronet.

Frank Stallone: Frank P. Stallone Jr. (born July 30, 1950) is an American actor, singer/guitarist and songwriter.  He is the younger brother of actor Sylvester Stallone.

Baron Blayney: Lord Blayney, Baron of Monaghan, in the County of Monaghan, was a title in the Peerage of Ireland.  It was created in 1621 for the soldier Sir Edward Blayney.  He was succeeded by his son, the second Baron.  He was killed at the Battle of Benburb in 1646.  His younger son, the fourth Baron (who succeeded his elder brother), represented County Monaghan in the Irish House of Commons.  His elder son, the fifth Baron, was attainted by the Parliament of James II for supporting William of Orange.  He had no sons and was succeeded by his younger brother, the sixth Baron.  He was Governor of County Monaghan.  His son, the seventh Baron, was Lord Lieutenant of County Monaghan.  He was succeeded by his elder son, the eighth Baron.  He was a clergyman and served as Dean of Killaloe.  He had no surviving children and was succeeded by his younger brother, the ninth Baron.  He was a Lieutenant-General in the Army.  His younger son, the eleventh Baron (who succeeded his elder brother), was also a Lieutenant-General in the Army and fought in the Peninsular War.  Lord Blayney also represented the rotten borough of Old Sarum in Parliament.  His son, the twelfth Baron, sat as Conservative Member of Parliament for County Monaghan and was later an Irish Representative Peer from 1841 until his death.  On his death in 1874 the title became extinct.

Jackie Stallone: Jacqueline Frances Stallone (née Labofish; born November 29, 1921) is an American astrologer, former dancer, and promoter of women's wrestling.  She is the mother of actor Sylvester Stallone, singer Frank Stallone, and the late actress Toni D'Alto (by her ex-husband Anthony Filiti).

Baron Dorchester: Baron Dorchester was a title that was created twice in British history, once in the Peerage of Great Britain and once in the Peerage of the United Kingdom.  The first creation came in the Peerage of Great Britain on 21 August 1786 when the soldier and administrator Sir Guy Carleton was made Lord Dorchester, Baron of Dorchester (on Thames), in the County of Oxford.  He was succeeded by his grandson, the second Baron.  He was the son of the Hon. Christopher Carleton, eldest son of the first Baron.  Lord Dorchester died unmarried at an early age and was succeeded by his first cousin, the third Baron.  He was the son of the Hon. George Carleton, younger son of the first Baron.  He had no sons and was succeeded by his first cousin, the fourth Baron.  He was the son of Reverend the Hon. Richard Carleton, younger son of the first Baron.  Lord Dorchester was a Colonel in the Coldstream Guards.  He was childless and the title became extinct on his death on 13 November 1897.

Baron Wolverton: Baron Wolverton, of Wolverton in the County of Buckingham, is a title in the Peerage of the United Kingdom.  It was created in 1869 for the banker George Glyn.  He was the fourth son of Sir Richard Carr Glyn, 1st Baronet, of Gaunt's House, Lord Mayor of London in 1798, himself the fourth son of Sir Richard Glyn, 1st Baronet, of Ewell, Lord Mayor of London in 1758.  Lord Wolverton was succeeded by the eldest of his nine sons, the second Baron.  He was a Liberal politician and served under William Ewart Gladstone as Paymaster-General and as Postmaster General.  He was childless and was succeeded by his nephew, the third Baron.  He was the eldest son of Vice-Admiral the Hon. Henry Carr Glyn, younger son of the first Baron.  He died childless the following year aged only twenty-six, and was succeeded by his younger brother, the fourth Baron.  He served as Vice-Chamberlain of the Household from 1902 to 1905 in the Conservative administration of Arthur Balfour.  On the death in 1988 of his second but eldest surviving son, the fifth Baron, this line of the family failed.  The title was inherited by the late Baron's second cousin, the sixth Baron.  He was the grandson of the Hon. Pascoe Glyn, younger son of the first Baron.  s of 2011 the title is held by his grandson, the eighth Baron, who succeeded in 2011.  As a descendant of both the first Glyn Baronet of Gaunt's House and of the first Glyn Baronet of Ewell, he is also in remainder to these titles.

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.

Supporting paragraphs: Jackie Stallone Frank Stallone
Answer: July 30, 1950