The name Edmund Mortimer was held by several members of the powerful Marcher family of Mortimer, including In European history, marches are border regions between centres of power. ...

• Edmund Mortimer, 3rd Earl of March and his grandson
• Edmund Mortimer, 5th Earl of March,

however, the best-known of the Edmund Mortimers was the second son of the 3rd Earl: Edmund Mortimer (1351—1381), 3rd earl of March and 1st Earl of Ulster, was son of Roger Mortimer, 2nd Earl of March, by his wife Philippa, daughter of William Montacute, 1st Earl of Salisbury. ... Edmund de Mortimer, (1391—1425), 5th Earl of March and Ulster, son of the 4th earl, succeeded to his father’s claim to the crown as well as to his title and estates on the death of the latter in Ireland in 1398. ...

Edmund Mortimer (November 9, 1376 - 1409?), was the second son of the 3rd Earl of March by his wife Philippa Plantagenet, and is the best-known of the various Edmund Mortimers. A grandson of Lionel of Antwerp and thus descended from King Edward III of England, he was born at Ludlow Castle in Shropshire. November 9 is the 313th day of the year (314th in leap years) in the Gregorian Calendar, with 52 days remaining. ... Events March – The treaty between England and France is extended until April of 1377. ... Events January 1 - The Welsh surrender Harlech Castle to the English. ... Phillipa Plantagenet, (16 August 1355 - 5 January 1380/1381), Countess of Ulster suo juris, was the daughter and only child of Lionel of Antwerp, Duke of Clarence, the third son of King Edward III of England by his wife Elizabeth de Burgh (d. ... Lionel of Antwerp, Duke of Clarence, (November 29, 1338 - October 7, 1368) was the third son of Edward III of England, and was so called because he was born at Antwerp, Belgium. ... Edward III (13 November 1312 – 21 June 1377) was one of the most successful English Kings of medieval times. ... Ludlow Castle is a large, now ruined castle which dominates the town of Ludlow in Shropshire, England. ... Shropshire (abbreviated Salop or Salops) is a county in the West Midlands of England, bordering Cheshire, Staffordshire, Worcestershire, Herefordshire, and the Welsh preserved counties of Powys and Clwyd. ...

Edmund was a supporter of his first cousin once removed Henry Bolingbroke), despite having a potentially better claim to the throne of England (Edmund's grandfather was the second surviving son of Edward III while Bolingbroke's father (John of Gaunt) was the third surviving son). Mortimer fought for Bolingbroke until captured by the Welsh rebel, Owain Glyndwr in battle. Henry IV (April 3, 1367 – March 20, 1413) was born at Bolingbroke Castle in Lincolnshire, hence the other name by which he was known, Henry Bolingbroke. His father, John of Gaunt was the third and oldest surviving son of King Edward III of England, who had enjoyed a position of... John of Gaunt, 1st Duke of Lancaster (June 24, 1340 - February 3, 1399), the third surviving son of King Edward III of England, gained his name because he was born at Ghent in 1340. ...

When Henry proved slow to ransom Mortimer, Glyndwr won his allegiance. Mortimer married Glyndwr's daughter Katherine (Catrin) in 1402, and they are believed to have had at least four children. Events September 14 - Battle of Homildon Hill. ...

Glyndwr and Mortimer plotted with Henry Percy, "Hotspur," to depose Henry IV and divide the kingdom of England and Wales in three. However, at some time during the siege of Owen's stronghold of Harlech by the future King Henry V, Mortimer died, possibly of plague. Henry Percy was the name of several nobles in the line that produced the earls of Northumberland. ... Royal motto: Dieu et mon droit (French: God and my right) Englands location within the UK Official language English de facto Capital London de facto Largest city London Area  - Total Ranked 1st UK 130,395 km² Population  - Total (2001)  - Density Ranked 1st UK 49,138,831 377/km² Religion... National motto: Cymru am byth (Welsh: Wales for ever) Waless location within the UK Official languages English and Welsh Capital Cardiff Largest city Cardiff First Minister Rhodri Morgan Area  - Total Ranked 3rd UK 20,779 km² Population  - Total (2001)  - Density Ranked 3rd UK 2,903,085 140/km² NUTS... Harlech is a town and seaside resort in Gwynedd, traditional county of Merionethshire, north Wales, lying on Tremadog Bay. ... Henry V of England, as depicted in Cassells History of England, Century Edition, published circa 1902 Henry V Henry V, (August 9 or September 16, 1387 - August 31, 1422), King of England, son of Henry IV of England by Mary de Bohun, was born at Monmouth, Wales, in September... Plague redirects here. ...