John de Mowbray, 2nd Baron Mowbray (4 September 1286 – 23 March 1322) was the son of Roger de Mowbray, 1st Baron Mowbray

Roger de Mowbray, 1st Baron Mowbray

Roger de Mowbray, 1st Baron Mowbray , was an English peer and soldier.The son of another Roger de Mowbray, served in the Welsh and Gascon Wars. He was summoned to the Parliament of Simon de Montfort in 1265, but such summons have later been declared void...

.

De Mowbray served in the Scottish wars of Edward I

Edward I of England

Edward I , also known as Edward Longshanks and the Hammer of the Scots, was King of England from 1272 to 1307. The first son of Henry III, Edward was involved early in the political intrigues of his father's reign, which included an outright rebellion by the English barons...

. The baron held such offices as sheriff

Sheriff

A sheriff is in principle a legal official with responsibility for a county. In practice, the specific combination of legal, political, and ceremonial duties of a sheriff varies greatly from country to country....

 of Yorkshire

Yorkshire

Yorkshire is a historic county of northern England and the largest in the United Kingdom. Because of its great size in comparison to other English counties, functions have been increasingly undertaken over time by its subdivisions, which have also been subject to periodic reform...

, governor of the city of York

York

York is a walled city, situated at the confluence of the Rivers Ouse and Foss in North Yorkshire, England. The city has a rich heritage and has provided the backdrop to major political events throughout much of its two millennia of existence...

, a warden of the Scottish marches, governor of Malton and Scarborough Castles.

He took part in the rebellion of Thomas, Earl of Lancaster. He was captured at the battle of Boroughbridge

Battle of Boroughbridge

The Battle of Boroughbridge was a battle fought on 16 March 1322 between a group of rebellious barons and King Edward II of England, near Boroughbridge, northwest of York. The culmination of a long period of antagonism between the king and Thomas, Earl of Lancaster, his most powerful subject, it...

 and subsequently hanged at York.

John de Mowbray married Aline de Braose, (b. 1291 d. ca 1331), daughter of William de Braose, 2nd Baron Braose

William de Braose, 2nd Baron Braose

William de Braose, was the second Baron Braose, as well as Lord of Gower and Lord of Bramber...

  and Lord of Gower

Gower (Lordship)

thumb|350px|right|Map of the Lordship, showing the area detached , the area added and the Town and Franchise of Swansea. The language boundary is shown as a dotted line....

. They had at least two sons:

• John
  John de Mowbray, 3rd Baron Mowbray
  John de Mowbray, 3rd Baron Mowbray was the son of John de Mowbray, 2nd Baron Mowbray. He was born on 29 Nov 1310 at Hovingham, Yorks...
  
  ,(b. 29 Nov 1310, Yorkshire
  Yorkshire
  Yorkshire is a historic county of northern England and the largest in the United Kingdom. Because of its great size in comparison to other English counties, functions have been increasingly undertaken over time by its subdivisions, which have also been subject to periodic reform...
  
  , England
  England
  England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...
  
   d.1361 who succeeded his father to the barony.
• Alexander, (c. 1314 – c. 1391.)