Individual Details

William Ros, 3rd Baron Ros

(19 May 1329 - 3 Dec 1352)

According to Wikipedia:

William Ros, 3rd Baron Ros of Helmsley (19 May 1329 - c. 3 December 1352) was a military commander under Edward, the Black Prince. He was knighted by the Black Prince in 1346, having helped raise the siege of Aiguillon. In the same year, he was one of the lords who led the second division in the Battle of Crécy, and afterwards commanded the fourth division of the English army against the Scots, near Neville's Cross, when David Bruce, with many of the Scottish nobles, was taken prisoner.

In 1346, he was with the Black Prince, at the siege of Calais, when it was taken by the English. On July 13, 1346, he was named a Knights Bachelor.[2]

In 1352, he accompanied Henry of Grosmont, Duke of Lancaster on his journey to Prussia; but died the same year, before the feast of St Michael, aged twenty-six, and was buried abroad.

Marriage
William Ros married, about 28 August 1339, Margaret Neville (d. May 1372), daughter of Ralph Neville, 2nd Baron Neville, by whom he had no issue.

His widow married secondly, as his first wife, Henry Percy, 1st Earl of Northumberland.[3]

Footnotes
Debrett's Peerage, 1968, p.347
Shaw, Wm. A. (1971). The Knights of England: A Complete Record from the Earliest Time to the Present Day of the Knights of All the Orders of Chivalry in England, Scotland, and Ireland, and of the Knights Bachelors. 2. Baltimore: Genealogical Publishing Company. p. 6. OCLC 247620448.
Richardson III 2011, p. 452.
References
Cokayne, George Edward (1949). The Complete Peerage, edited by Geoffrey H. White. XI. London: St. Catherine Press.
Richardson, Douglas (2011). Magna Carta Ancestry: A Study in Colonial and Medieval Families, ed. Kimball G. Everingham. I (2nd ed.). Salt Lake City. ISBN 1449966373
Richardson, Douglas (2011). Magna Carta Ancestry: A Study in Colonial and Medieval Families, ed. Kimball G. Everingham. III (2nd ed.). Salt Lake City. ISBN 144996639X
Shaw, Wm. A. (1971). The Knights of England: A Complete Record from the Earliest Time to the Present Day of the Knights of All the Orders of Chivalry in England, Scotland, and Ireland, and of the Knights Bachelors. Baltimore: Genealogical Publishing Company. OCLC 247620448.

Events

Birth19 May 1329
Marriage28 Aug 1339Margaret Neville
Death3 Dec 1352

Families

SpouseMargaret Neville ( - 1372)
FatherWilliam Ros, 2nd Baron Ros (1285 - 1343)
MotherMargery de Badlesmere (1306 - 1363)
SiblingThomas de Ros, 4th Baron de Ros (1335 - 1384)
SiblingMaud de Ros ( - 1388)
SiblingLiving