Question: Who was the father of the 6th Baron from the family of Cumbria, England?

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Thomas Berkeley, 5th Baron Berkeley: He was born to Sir Maurice Berkeley, "de jure" 3rd Baron Berkeley, and Isabel Meade, in England.  He was the younger brother to Maurice Berkeley, "de jure" 4th Baron Berkeley, and had a younger brother, James, and younger sister, Anne.  On 9 September 1513 he fought in the Battle of Flodden and was knighted by the Earl of Surrey, Thomas Howard.  He later became Constable of Berkeley Castle on 15 May 1514, and Sheriff of Gloucestershire, November 1522 - November 1523.  By writ, he was succeeded to the title of "de jure" 5th Baron Berkeley on 12 September 1523 after his brother Maurice's death, and his eldest son Thomas followed as the "de jure" 6th Baron Berkeley, again by writ.

William Strickland (farmer): William Strickland, 6th Baron Boynton, esq. (February 18, 1753 – January 8, 1834) was an 18th-century gentleman farmer and writer from Yorkshire, England.  He was the eldest son of Sir George Strickland of York, England, from the ancient English Strickland family of Sizergh.  He established his own farm at Welburn in York and, in 1808, succeeded his father as the sixth baron of Boynton.

Vicary Gibbs, 6th Baron Aldenham: Vicary Tyser Gibbs, 6th Baron Aldenham and 4th Baron Hunsdon of Hunsdon (9 June 1948) is a British peer, the son of Anthony Durant Gibbs, 5th Baron Aldenham.  He succeeded to the titles 4th Baron Hunsdon of Hunsdon, and 6th Baron Aldenham on 25 January 1986.

Baron Rolle: Baron Rolle was a title created twice in the Peerage of Great Britain for members of the Rolle family, related as uncle and nephew.  This family was established at the manor of Stevenstone in Devon in the 16th century.  In the 17th century they acquired additional estates in Devon including Bicton when Sir Henry Rolle (d.1617) married Anne Denys, a co-heiress of Bicton and Holcombe Burnell.  In 1748 Henry Rolle, previously Member of Parliament for Devon and Barnstaple, was made Lord Rolle, Baron of Stevenstone, in the County of Devon.  The title became extinct on his early death in 1750.  His nephew John Rolle inherited the family estates in 1779 and in 1796 was made Baron Rolle, of Stevenstone in the County of Devon.  The title became extinct on his death in 1842.  He bequeathed his estates, then some 55000 acre , to Hon. Mark Trefusis (d.1907), second son of the 19th Baron Clinton, the nephew of his second wife and widow, who was required by the will to adopt the surname and arms of Rolle, which he did by royal licence in 1852.  In 1907 he too died without male progeny when, in accordance with the entail created by the will of Lord Rolle, the Rolle estates descended to his nephew Charles Trefusis, 21st Baron Clinton (1863–1957) of Heanton Satchville, Huish.  The Trefusis family had in 1791 inherited the great estates of the Rolle family of Heanton Satchville, Petrockstowe, a junior branch of the Rolles of Stevenstone.  This was due to the eventual heir of Margaret Rolle, "suo jure" 15th Baroness Clinton (1709-1781) having been her cousin Robert George William Trefusis (1764–1797), lord of the manor of Trefusis in Cornwall, who in 1794 successfully claimed the title 17th Baron Clinton.  Trefusis and Margaret Rolle were both descended from the marriage of Robert Rolle (c.1622-1660) of Heanton Satchville, Petrockstowe and Lady Arabella Clinton, the younger daughter of Theophilus Clinton, 4th Earl of Lincoln, 12th Baron Clinton (d.1667).  The 21st Baron Clinton sold Stevenstone in 1922, and concentrated his remaining still huge Devon estates in two areas, one in mid-Devon comprising the estates of Rolle of Heanton Satchville, Petrockstowe, the other in east Devon comprising the Bicton and East Budleigh estates of Rolle of Stevenstone.  All the estates are today managed by the Clinton Devon Estates organisation.

Baron Stanley of Alderley: Baron Stanley of Alderley, in the County of Chester, is a title in the Peerage of the United Kingdom.  It was created in 1839 for the politician and landowner Sir John Stanley, 7th Baronet.  Upon his death in 1850, he was succeeded as 2nd Baron Stanley of Alderley and 8th Baronet of Alderley Hall by his son Edward, who was a prominent Liberal politician and notably served as President of the Board of Trade, Postmaster General and had in 1848 been created Baron Eddisbury, of Winnington in the County Palatine of Chester, in his own right.  His wife Henrietta was a prominent campaigner for women's education.  After his death, the Stanley of Alderley and Eddisbury baronies remained united; most holders have since chosen to be known as "Lord Stanley of Alderley".  The 3rd Baron Stanley of Alderley had a career in the Diplomatic Service; as he was childless he was succeeded by his younger brother, the 4th Baron.  He was Liberal Member of Parliament for Oldham.  In 1909, the 4th Baron Stanley of Alderley acquired a further title when he succeeded his first cousin once removed, the Earl of Sheffield, according to a special remainder and thus inherited the title of 4th Baron Sheffield.  After his death the titles passed to his son, the 5th Baron Stanley of Alderley.  He was Liberal Member of Parliament for Eddisbury and also served as Governor of Victoria.  His eldest son, the 6th Baron Stanley of Alderley, sold the family seat of Alderley Hall in 1938.  He was married four times, the second time to Sylvia Ashley.  On his death the titles passed to his younger brother, who preferred to be known as Lord Sheffield.  He only held the titles for three months.  s of 2013 the titles are held by the latter's cousin, the 9th Baron Stanley of Alderley, who succeeded his father in that year.  He is the grandson of the Hon. Oliver Hugh Stanley, youngest son of the 4th Baron.

Frederick Byron, 10th Baron Byron: Rev. Frederick Ernest Charles Byron, 10th Baron Byron (26 March 1861 – 6 June 1949) was an Anglican clergyman, nobleman, peer, politician, and the tenth Baron Byron, as a grandson of Admiral George Anson Byron, 7th Baron Byron, who was the cousin of Romantic poet and writer George Gordon Byron, 6th Baron Byron.

Edward Stanley, 6th Baron Stanley of Alderley: Edward John Stanley, 6th Baron Sheffield, 6th Baron Stanley of Alderley and 5th Baron Eddisbury (9 October 1907 – 3 March 1971) was a British peer.

William Byron, 5th Baron Byron: William Byron, 5th Baron Byron (5 November 1722 – 19 May 1798), also known as "the Wicked Lord" and "the Devil Byron", was a British peer, nobleman, politician, and the poet George Gordon Byron, 6th Baron Byron's great uncle.  He was the son of William Byron, 4th Baron Byron and his wife Hon. Frances Berkeley, a descendant of John Berkeley, 1st Baron Berkeley of Stratton.

Henry Nevill, 6th Baron Bergavenny: Henry Nevill, 6th and "de jure" 4th Baron Abergavenny KB (between 1527 and 153510 February 1587) was an English peer.  He was the son of Sir George Nevill, 5th Baron Bergavenny, and Mary Stafford (daughter of Edward Stafford, 3rd Duke of Buckingham).  He succeeded to the barony upon the death of his father, George Nevill, 5th Baron Bergavenny.

Sizergh Castle and Garden: Sizergh Castle and Garden is a stately home and garden at Helsington in the English county of Cumbria, about 4 mi south of Kendal.  The castle, a grade I listed building, is in the care of the National Trust along with its garden and estate.  It is the home of the Hornyold-Strickland family.

Supporting paragraphs: William Strickland (farmer) Sizergh Castle and Garden
Answer: Sir George Strickland