Other Events:

• Office: Hereditary Keeper of Berwick Castle
• Hereditary Title: From Feb. 1352 to May 1368; 3rd Lord Percy [E., 1299]
• Office: June 1352; Warden of the coast of Northumberland
• Office: July 1352; Warden of the East March
• Office: Sept. 1355; Keeper of Roxburgh Castle
• Office: Sept. 1355, Calais, France; Marshal of the Royal Army in Calais
• Office: Sept. 1355; Sheriff of Roxburghshire

Notes:

In March 1343/44, as Henry de Percy le fitz, he was going abroad with the Earl of Arundel in the King's service.

He fought at Crécy, 26 August 1346.

In 1346 he was still in the retinue of the Earl of Arundel; in June 1347 he was in the train of the Earl of Lancaster.

In 1348 he served on a commission of inquiry in Yorkshire.

In November 1349 he went on service to Gascony, under the Earl of Lancaster, and in August 1350 fought in the King's naval victory over the Spaniards off Winchelsea.

In March 1352 he was a commissioner to receive King David of Scotland on his return to captivity.

In October 1353, and following years, he was a commissioner to treat as to the return of King David, and for peace.

On 20 January 1355/56 he was among the witnesses to Edward Balliol's surrender to Edward III of the Kingdom and (golden) crown of Scotland.

In September 1355 he crossed with the King from Sandwich, being made marshal of the royal army in Calais.

He took part in the King's expedition to Champagne in October 1359.

He was one of those who took the oath for the observance of the treaty of Brétigny, and who escorted King John of France to Calais.

In August 1360, and in 1362, he was a plenipotentiary to negotiate with David of Scotland.

On 19 October 1364 he witnessed at Dover the marriage treaty of Edward, Earl of Cambridge, and Margaret, Duchess of Burgundy.

Birth:
He was aged 30 years and more at his father's death.

Office:
In which office he succeeded his father.

Henry married Lady Mary (Plantagenet), of Lancaster before Sept. 1334 in Tutbury Castle, Tutbury, Staffordshire, England. Mary (daughter of Henry (Plantagenet), 3rd Earl of Lancaster and of Leicester, Count of Provence and Maud Chaworth) died on 1 Sept. 1362; was buried in Alnwick, Northumberland, England. [Group Sheet] [Family Chart]

Henry married Joan de Orreby before May 1365. Joan (daughter of John (de Orreby), Lord Orreby and Margaret (unknown)) died in July 1369. [Group Sheet] [Family Chart]

Other Events:

• Hereditary Title: From May 1368 to 4 Dec. 1406; 4th Lord Percy [E., 1299]
• Hereditary Title: From 16 July 1377 to 4 Dec. 1406; 1st Earl of Northumberland [E., 1377]

Notes:

Hereditary Title:
He was created Earl of Northumberland at the Coronation of Richard II, 16 July 1377.

Henry married Hon. Margaret de Neville on 12 July 1358 in Brancepeth, Co. Durham, England. Margaret (daughter of Ralph (de Neville), 2nd Lord Neville and Alice de Audley) died in May 1372. [Group Sheet] [Family Chart]

Notes:

Died in infancy.

Notes:

Birth:
Aged 2 at her mother's death, which occurred at the end of July 1369.

Family/Spouse: John (de Ros), Lord Ros of Helmsley. [Group Sheet] [Family Chart]

Other Events:

• Hereditary Title: Lord Percy [courtesy title]
• Decoration: 23 April 1377; Knighthood
• Office: 30 July 1384; Warden of the East March
• Office: 12 April 1388; Warden of the East March [for 3 years]
• Decoration: Before 23 April 1388; Knight of the Order of the Garter (K.G.)
• Office: 6 June 1390; Warden of the West March
• Office: 16 Jan. 1392/93; Warden of the East March
• Office: 2 June 1396; Warden of the East March [for 10 years]
• Office: 12 Oct. 1399; Warden of the East March

Notes:

He first bore arms at the recapture of Berwick by his father, December 1378.

When travelling in Prussia in 1383 he hurried back to Flanders to take part in the expected fighting there in the Bishop of Norwich's "crusade," and in that year began his official work on the Border, as a commissioner to receive money due from the King of Scotland.

In 1385 he attended Richard II on his expedition into Scotland.

In May 1386 ("as Henry Percy the younger, whom the Scots call Haatspore") he was sent with a large force to Calais.

In August 1387 he was in command of a squadron at sea against the French.

Office:
In January 1390/1, being sent on some mission abroad—query, to Calais—he had licence to make his brother Ralph his deputy; he returned during the year.

Family/Spouse: Lady Elizabeth Mortimer. Elizabeth (daughter of Edmund (Mortimer), 3rd Earl of March and Philippa (Plantagenet), suo jure Countess of Ulster) was born on 12 Feb. 1370/71 in Usk, Monmouthshire, Wales. [Group Sheet] [Family Chart]

Notes:

He was taken by his grandfather, shortly after the death of Hotspur (his father), to Scotland, where he remained in the care of the Duke of Albany for about 10 years.

Died:
He was slain ex parte Regis at the first Battle of St. Albans.

Henry married Lady Eleanor Neville after Oct. 1414 in Berwick, Northumberland, England. [Group Sheet] [Family Chart]