I looked at various unfilled prompts and there's a few from 2015 for the Players' Boy - which has a grand total of one fic on AO3.
I finally read both Player's Boy and Players & the Rebels together on holiday, wanted to try writing something, and got stuck in the history despite having studied it a fair deal (via Maria Stuart and the Marlowe Society). I started creating a bit of a timeline to see if I could get any of my plot ideas to hand together without too much waving aside fact, and thought other potential writers might find it useful.
Players Boy timeline
1520 William Cecil (Lord Burghley) born
1535 Burghley goes to St John's, Cambridge
1541 Burghley leaves Cambridge for Gray's Inn; marries Mary Cheke (daughter of a scholar). Served Somerset.
1547-8 Burghley enters Parliament
1549 Somerset and Burghley imprisoned in Tower; Burghley gains favour of Warwick.
1550 Burghley sworn as Secretary of State for Edward VI
1553 Burghley signs Third Succession Act ruling out Mary and Elizabeth from the throne (Act created by Warwick now called Northumberland, forced to sign by Edward himself)
1553 Mary comes to throne.
Burghley conforms to Catholicism, is in Parliament but not chosen to be a minister. Works with Northumberland on lands for Elizabeth.
1558 Elizabeth comes to throne.
Burghley becomes Secretary of State and leader of Privy Council.
?1555-9 Robert Poley born
1559 Burghley elected Chancellor of Cambridge
1561 Burghley given 'lucrative' role of Master of Court of Wards, hence later awarded custody of Essex, Southampton, Oxford (de Vere), and Rutland
1564 ?February Kit Marlowe then ?April Shakespeare born
1565 Essex - Robert Devereux - born
1568 Poley becomes sizar at Clare college Cambridge
1571 Cecil becomes 1st Baron Burghley
1573 Henry Wriothesley, 2nd Earl Southampton, born October 1573
1576 Essex's father dies and Essex became ward of Lord Burghley.
1577 Essex admitted as fellow-commoner to Trinity College Cambridge
1577 Essex's mother marries Leicester
1579 Essex matriculates at Trinity
1580 Marlowe comes to Corpus Christi College on a Divinity scholarship, matriculates 1580/1
1581 Essex graduates MA.
Harry's father dies, Harry's inheritance&guardianship sold to Lord Howard; then boy and marriage organisation powers to Lord Burghley (lands remaining with Howard), so Harry came to Cecil House in the Strand age 8.
1584 Marlowe gets BA
Essex comes to Court
1984-5 Marlowe absent for long periods from Cambridge and comes into money
1585 Poley working for Leicester as a spy
Southampton to St John's age 12 (Oct 1585),
1586 Poley in Babington plot, under cover as Catholic sympathiser
1587 Essex becomes court favourite.
Marlowe refused MA from Corpus, but someone from the Privy Council intercedes on his behalf citing his 'loyal service to the Queen'
Tamerlaine performed in London
Execution of Mary QoS
1588 Harry admitted to Gray's Inn earlier, Feb 1588.
Essex takes over posts from Leicester
1589 Harry graduates MA and
Essex fights under Burghley in the Netherlands.
?Marlowe tutoring Arbella Stuart, niece of Mary QoS, cousin of James Stuart
Marlowe arrested, released on bail Oct, in court Dec.
1590 - Burghley starts negotiations for marrying Harry to de Vere
Essex marries Frances Walsingham
1591 Narcissus dedicated to Southampton by John Clapham at Court.
1592 Marlowe arrested in Netherlands, dealt with by Burghley but no criminal record (spying on Catholics and disrupting their counterfeit coin supply?)
Southampton's grandfather dies and he is nominated to Order of the Garter
1593 Essex joins Privy Council
11 May Kyd arrested for libels blamed on him and Marlowe
18 May 1593 Marlowe arrest warrant issued but saved by lack of Privy Council sitting when he presented himself on 20 May
30 May Marlowe killed in Deptford; Robin Poley, Ingram Frizer, Robert Skeres all present.
Venus and Adonis dedicated by Shakespeare to Southampton
Nashe dedicates Unfortunate Traveller to Southampton
Barnes publishes with dedicatory sonnet to Southampton.
1594 - Harry refuses de Vere
Dido Queen of Carthage published
Rape of Lucrece dedicated in flamboyant terms to Southampton by Shakespeare
Henry Danvers shoots Henry Long. Southampton shelters him and elder brother Charles at Titchfield. They are outlawed and push off to France and serve Henri IV.
1595 Markham publishes with dedicatory sonnet to Southampton
1596 John Florio is under pay and patronage of Southampton and has been for some years.
1597 Henry Lok, William Burton make dedications to Southampton
Southampton challenges Northumberland to a duel.
1598 - Burghley collapses and dies at Cecil House. Cecil elder (Thomas) becomes Burghley and later Exeter. Younger (Robert) becomes Exeter, takes on political career, later becomes Salisbury.
1599 - Essex placed under house arrest after poor battles in Ireland
1601 Essex rebellion, executed 25 February.