Question: What year was Ferdinando Stanley, 5th Earl of Derby's father born?

Context paragraphs:
Henry Stanley, 4th Earl of Derby: Henry Stanley, 4th Earl of Derby KG (September 1531 – 25 September 1593) was a prominent English nobleman, diplomat, and politician.  He was an ambassador, Privy Councillor, and participated in the trials of Mary, Queen of Scots and the Earl of Arundel.

Earl of Warwick: Earl of Warwick ( ) is a title that has been created four times in English history and is one of the most prestigious titles in the peerages of the United Kingdom.  The first creation came in 1088, and was held by the Beaumont, and later by the Beauchamp families.  The 14th Earl was created Duke of Warwick in 1445, a title which became extinct on his early death the following year.  The best-known Earl of this creation was the 16th Earl, Richard Neville, who was involved in the deposition of two kings, a fact which later earned him his epithet "Warwick the Kingmaker".  This creation became extinct on the death of the 17th Earl in 1499.  The title was revived in 1547 for the powerful statesman John Dudley, 1st Viscount Lisle, who was later made Duke of Northumberland.  The earldom was passed on during his lifetime to his eldest son, John, but both father and son were attainted in 1554.  The title was recreated or restored in 1561 in favour of Ambrose, younger son of the Duke of Northumberland.  However, Ambrose was childless and the earldom became extinct on his death in 1590.  It was created for a third time in 1618 for Robert Rich, 3rd Baron Rich, in spite of the fact that the Rich family were not in possession of Warwick Castle.  From 1673 the Earls also held the title Earl of Holland.  All the titles became extinct on the death of the 8th Earl in 1759.  The earldom was revived the same year in favour of Francis Greville, 1st Earl Brooke.  The Greville family were in possession of Warwick Castle and the title and castle were thereby re-united for the first time in over a century.  The 1759 creation is extant and currently held by Guy Greville, 9th Earl of Warwick.  However, Warwick Castle was sold by the family in 1978, and they currently live in Australia.

Baron Mohun: The title Baron Mohun was created once in the Peerage of England.  On 6 February 1299 John de Mohun was summoned to parliament.  On the death of the second baron, the barony fell into abeyance.  In 1431, Richard le Strange, 7th Baron Strange (second creation) became sole heir of the barony of Mohun; both these titles became abeyant on the death of Ferdinando Stanley, 5th Earl of Derby in 1594.

Arcades (Milton): Arcades is a masque written by John Milton and performed on 4 May 1634.  The piece was written to celebrate the character of Alice Spencer, the Countess Dowager of Darby, widow of Ferdinando Stanley, 5th Earl of Derby, during her 75th birthday.  The masque distinguishes Spencer as having a greater far superior to other noble women by titling Spencer as queen of a metaphorical Arcadia that is far superior than any other realm.  The piece served as a basis for Milton's later masque, "Comus".

Ferdinando Hastings, 6th Earl of Huntingdon: Ferdinando Hastings, 6th Earl of Huntingdon (18 January 1609 – 13 February 1656), was the son of Henry Hastings, 5th Earl of Huntingdon, and Lady Elizabeth Stanley, the daughter of Ferdinando Stanley, 5th Earl of Derby, and Alice Spencer.  He married Lucy, daughter of Sir John Davies, on 7 August 1623.

Ferdinando Stanley, 5th Earl of Derby: Ferdinando Stanley, 5th Earl of Derby (1559 – 16 April 1594) was an English nobleman and politician.  He was the son of Henry Stanley, 4th Earl of Derby and Lady Margaret Clifford.  Ferdinando had a place in the line of succession according to the Will of Henry VIII, after his mother, whom he predeceased.  His sudden death led to suspicions of poisoning amid fears of Catholic plots to overthrow Elizabeth.

Eleanor de Clare: Eleanor de Clare, suo jure 6th Lady of Glamorgan (3 October 1292-30 June 1337) was a powerful English noblewoman who married Hugh Despenser the Younger and was a granddaughter of Edward I of England.  With her sisters, Elizabeth de Clare and Margaret de Clare, she inherited her father's estates after the death of her brother, Gilbert de Clare, 8th Earl of Gloucester, 7th Earl of Hereford at the Battle of Bannockburn in 1314.  She was born in 1292 at Caerphilly Castle in Glamorgan, Wales and was the eldest daughter of Gilbert de Clare, 6th Earl of Hertford, 7th Earl of Gloucester, 5th Lord of Glamorgan and Princess Joan of Acre.

Hugh de Courtenay, 4th/12th Earl of Devon: Hugh Courtenay, 4th/12th Earl of Devon, 5th Baron Courtenay (1389 – 16 June 1422) was an English nobleman, son of the 3rd/11th Earl of Devon, and father of the 5th/13th Earl.  The ordinal number given to the early Courtenay Earls of Devon depends on whether the earldom is deemed a new creation by the letters patent granted 22 February 1334/5 or whether it is deemed a restitution of the old dignity of the de Redvers family.  Authorities differ in their opinions, and thus alternative ordinal numbers exist, given here.

Lord Strange's Men: Lord Strange's Men was an Elizabethan playing company, comprising retainers of the household of Ferdinando Stanley, Lord Strange (pronounced "strang").  They are best known in their final phase of activity in the late 1580s and early 1590s.  After 25 September 1593, they were known as the Earl of Derby's Men, that being the date of Stanley's accession to his father's title.

Stanley letter: The Stanley letter is the title given to a letter written in 1831 by Edward Stanley (who later became The 14th Earl of Derby), then Chief Secretary for Ireland.  This letter outlined his broad vision and a very practical proposal which helped the U.K. Government to establish legal basis for national schools in Ireland.  The letter was written two years after the government led by Field Marshal The 1st Duke of Wellington, in a very close alliance with the accomplished Irish patriot of constitutional revolution Daniel O'Connell, secured the passage and Royal Proclamation of the Catholic Emancipation bill.  It was penned by the Chief Secretary for Ireland, Edward Stanley (later Prime Minister of the United Kingdom as The 14th Earl of Derby) and was addressed to The 3rd Duke of Leinster.

Supporting paragraphs: Ferdinando Stanley, 5th Earl of Derby Henry Stanley, 4th Earl of Derby
Answer: 1531