Marquess Montagu is in Marquessates of England Alphabetically, Marquessates of England Chronologically, Forfeit Marquessates of England.
Summary
26th March 1470. 1st. John Neville 1st Marquess Montagu [aged 39] created. See Earldom of Northumberland returned to the Percy Family.
14th April 1471. 1st. John Neville 1st Marquess Montagu forfeit. See 14th April 1471 Battle of Barnet.
On 26th March 1470 John Neville 1st Marquess Montagu [aged 39] revoked his title of Earl of Northumberland so that the Earldom could be given to of the Percy family who were its traditional holders.
Henry Percy 4th Earl of Northumberland [aged 21] was restored 4th Earl of Northumberland, 7th Baron Percy of Alnwick, 15th Baron Percy of Topcliffe. Maud Herbert Countess Northumberland [aged 12] by marriage Countess of Northumberland.
A deeply unpopular move with the Neville family who had been longstanding enemies of the Percies in the North. He was created 1st Marquess Montagu instead. Possibly a consequence of the defection of Warwick the Kingmaker [aged 41] to the Lancastrian cause as evidenced by the Welles Rebellion earlier in the year.
On 14th April 1471 Edward IV [aged 28] commanded at the Battle of Barnet supported by his brothers George [aged 21] and Richard [aged 18], John Babington [aged 48], Wiliam Hastings [aged 40] (commanded), Ralph Hastings, William Norreys [aged 30], William Parr [aged 37], John Savage [aged 49], William Bourchier Viscount Bourchier [aged 41], Thomas St Leger [aged 31], John Tuchet 6th Baron Audley, 3rd Baron Tuchet [aged 45], Thomas Burgh 1st Baron Burgh of Gainsborough [aged 40], John Scott [aged 48] and Thomas Strickland.
The Yorkists William Blount [aged 29], Humphrey Bourchier [aged 36], Henry Stafford [aged 46] and Thomas Parr were killed.
Humphrey Bourchier 1st Baron Cromwell [aged 40], was killed. Baron Cromwell extinct.
The Lancastrians...
Warwick the Kingmaker [aged 42] was killed. Earl Salisbury, Baron Montagu, Baron Montagu and Baron Monthermer forfeit on the assumption he was attainted either before or after his death; the date of his attainder is unknown. If not attainted the titles may have been abeyant between his two daughters Isabel Neville Duchess Clarence [aged 19] and Anne Neville Queen Consort England [aged 14].
John Neville 1st Marquess Montagu [aged 40] was killed. Marquess Montagu, Baron Montagu forfeit; unclear as to when he was attainted. He was buried at Bisham Abbey [Map].
William Tyrrell was killed.
William Fiennes 2nd Baron Saye and Sele [aged 43] was killed. His son Henry [aged 25] succeeded 3rd Baron Saye and Sele. Anne Harcourt Baroness Saye and Sele by marriage Baroness Saye and Sele.
Henry Holland 3rd Duke Exeter [aged 40] commanded the left flank, was badly wounded and left for dead, Henry Stafford and John Paston [aged 27] were wounded, John de Vere 13th Earl of Oxford [aged 28] commanded, and John Paston [aged 29] and William Beaumont 2nd Viscount Beaumont [aged 33] fought.
Robert Harleston [aged 36] was killed.
Thomas Hen Salusbury [aged 62] was killed.
Thomas Tresham [aged 51] escaped but was subsequently captured and executed on the 6th of May 1471.