(1) He is married to MARGARET NEVILLE.
They got married on July 12, 1358 at Brancepeth, County Durham, he was 16 years old.Source 2
Child(ren):
(2) He is married to Matilda LUCY.
They got married December 1381 at Alnwick, Northumberland, he was 40 years old.
Henry Percy, 1st Earl of Northumberland, 4th Baron Percy, titular King of Mann, KG, Lord Marshal (10 November 1341 - 20 February 1408) was the son of Henry de Percy, 3rd Baron Percy, and a descendant of Henry III of England. His mother was Mary of Lancaster, daughter of Henry, 3rd Earl of Lancaster, son of Edmund, Earl of Leicester and Lancaster, who was the son of Henry III.
Henry Percy was originally a follower of Edward III of England, for whom he held high offices in the administration of northern England. At a young age, he was made Warden of the Marches towards Scotland in 1362, with the authority to negotiate with the Scottish government. In February 1367, he was entrusted with the supervision of all castles and fortified places in the Scottish marches. He went on to support King Richard II, was formally created an Earl on Richard's coronation in 1377, and was briefly given the title of Marshal of England. Between 1383 and 1384, he was appointed Admiral of the Northern Seas. After Richard elevated his rival Ralph Neville to the position of Earl of Westmorland in 1397, Percy and his son, also Henry and known as "Hotspur", supported the rebellion of Henry Bolingbroke, who became King as Henry IV.
On King Henry IV's coronation, Henry Percy was appointed Constable of England and granted the lordship of the Isle of Man. Percy and Hotspur were given the task of subduing the rebellion of Owain Glyndŵr, but their attempts to make peace with the Welsh rebels did not meet with the king's approval.
Rebellion
In September 1402 the Percys took part in the Battle of Homildon Hill, which led to the capture of many Scots nobles. Henry did not want them to be ransomed, leading to another quarrel. In 1403 the Percys turned against Henry IV in favour of Edmund Mortimer, 5th Earl of March, and then conspired with Owain Glyndŵr against Henry. The Tripartite Indenture was signed by all three parties, which divided England up between them. Glyndŵr was to be given Wales, and a substantial part of the west of England, Northumberland was to have received the north of England, as well as Northamptonshire, Norfolk, Warwickshire, and Leicestershire. The Mortimers were to have received the rest of southern England, below the river Trent.
The Percy rebellion failed at the Battle of Shrewsbury, where Hotspur was killed. Since the earl did not directly participate in the rebellion, he was not convicted of treason. However, he lost his office as Constable. In 1405 Percy supported Richard le Scrope, Archbishop of York, in another rebellion, after which Percy fled to Scotland, and his estates were confiscated by the king.
In 1408 Percy invaded England in rebellion once more and was killed at the Battle of Bramham Moor. His severed head was subsequently put on display at London Bridge.
Marriages and issue
In 1358, he married Margaret Neville (12 February 1339 - 12 May 1372), daughter of Ralph Neville, 2nd Baron Neville de Raby, and Alice de Audley. They had four sons Harry "Hotspur" Percy, Thomas, Ralph, and Alan and one daughter Margaret.
In 1381, he married Maud Lucy (1343 - 18 December 1398), daughter of Sir Thomas de Lucy, 2nd Baron Lucy, and Margaret de Multon, and thus sister and heiress of Anthony Lucy, 3rd Baron Lucy (died 1368), of Cockermouth Castle, Cumbria, which estate he inherited on condition that he and his heirs male should bear the arms of Lucy (Gules, three lucies hauriant argent) quarterly with their own. They had no issue.
https://en.wikipedia.org/wiki/Henry_Percy,_1st_Earl_of_Northumberland
HENRY IV PERCY | ||||||||||||||||||||||||||||||||||||||
(1) 1358 | ||||||||||||||||||||||||||||||||||||||
MARGARET NEVILLE | ||||||||||||||||||||||||||||||||||||||
(2) 1381 | ||||||||||||||||||||||||||||||||||||||
Matilda LUCY | ||||||||||||||||||||||||||||||||||||||
He was also reported to have died on 19 February 1407 at Bramham Moor,Yorkshire