William III 1st Baron de Ros , of Helmsley, MP 
William III 1st Baron de was born about 1255 in Helmsley Castle, North Ride Yorkshire, England. William III 1st Baron de's father was Robert IV "1st Baron" de Ros , of Belvoir, MP and his mother was Isabel de Albini , Heiress of Belvoir. His paternal grandparents were William I de Ros , MP, Lord of Helmsley, Sir and Lucy FitzPiers; his maternal grandparents were William II de Albini , Lord of Belvoir and Isabel. He had three sisters named Mary de, Joan de and Isabel de. He was the second oldest of the four children. He died in Wark Castle, Wark-on-Tweed, Northumberland, England.General Notes
William de Ros, 1st Lord (Baron) de Ros of Helmsley, so created according to later doctrine by writ of summons 6 Feb 1289/90 (but see prior generation for an earlier precedence assigned the title in later centuries); candidate for the Crown of Scotland 1291 by reason of his descent from William the Lion, albeit illegitimate; granted 1301 Wark Castle on its forfeiture for rebellion by his cousin Robert de Ros of Wark; Jt Warden Northumberland 1307, Jt Lt and Warden in Scotland 1308. [Burke's Peerage]
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William de Ros, b. c 1255, d. (presumably between 12 May and 16 Aug) 1316, 1st Lord Ros of Helmsley, MP 1295-1316; m. bef. 1287 Maude de Vaux, daughter of John de Vaux, d. 1287. [Magna Charta Sureties]
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William de Ros, 2nd Baron Ros, b. 1255, summoned to parliament as Baron Ros, of Hamlake, from 23 June, 1295, to 6 October, 1315. This nobleman was one of the competitors for the crown of Scotland in the 19th Edward I, 1296, through his grandmother, Isabel, natural daughter of William the Lion, King of Scotland. He was subsequently engaged in the wars of Gascony and Scotland, and discovering the intention of his kinsman, Robert de Ros, then Lord of Werke, to deliver up that castle to the Scots, he lost no time in apprising the king, who thereupon despatched him with 1600 men to defend that place, but the Scots attacking this force upon its march cut it to pieces; when Edward himself advancing from Newcastle-upon-Tyne soon obtained possession of the fort and appointed Lord Ros its governor--allowing him, during his absence in Gascony, to nominate his brother, Robert, lieutenant. In a short time after, he had a grant of this castle with its appurtenances forfeited by the treason of his before-mentioned kinsman; and for several subsequent years, his lordship was actively engaged in Scotland. In the 1st Edward II [1307], he was constituted the king's lieutenant, between Berwick and the river Forth, and in six years afterwards, he was appointed warden of the west marches of Scotland. He m. Maud, or Matilda, one of the daus. and co-heirs of John de Vaux, who brought him the manor of Feston and lands in Boston, co. Lincoln, and had issue: William, his successor; John; Thomas; Margaret; Anne, m. to Paine, son of Robert de Tibetot; Mary, m. 1st to William Braose, and 2ndly, to Thomas de Brotherton, Duke of Norfolk. His lordship d. in 1316 and was s. by his elder son. [Sir Bernard Burke, Dormant, Abeyant, Forfeited and Extinct Peerages, Burke's Peerage, London, 1883, p. 459, Ros, or Roos, Barons Ros]
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Ancestor Pedigree Chart
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*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
- b.> 1145 in Helmsley Castle, North Ride Yorkshire, England d.1183
- b.~ 1169 in Ros, Holderness, East Ride Yorkshire, England d.<23 Dec 1226 in Helmsley Castle, North Ride Yorkshire, England
- b.~ 1151 in Ingmanthorpe, Kirk Deighton, Yorkshire, England d.~ 1196
- b.~ 1196 in Helmsley Castle, North Ride Yorkshire, England d.1264 in Poitou, France
- b.1143 in Huntingdon, Huntingdonshire, England d.04 Dec 1214 in Stirling Castle, Stirlingshire, England
- b.~ 1169 in Huntingdon, Huntingdonshire, England
- b.~ 1143 in Edinburgh, Midlothian, Scotland d.~ 1185 in Stirling Castle, Stirlingshire, England
- b.1233 in Helmsley Castle, North Ride Yorkshire, England d.17 May 1285 in Belvoir Castle, Leicestershire, England
- b.< 1144 in Blaen Llyfni, Brecknockshire, Wales d.<Jun 1204
- b.~ 1163 in Blewleveny Castle, Blaen Llyfni, Brecknockshire, Wales d.<06 Jun 1235
- b.~ 1142 in Bwlch y Dinas, Brecknockshire, Wales d.> 1219 in Blaen Llyfni, Brecknockshire, Wales
- b.~ 1208 in Brecknock, Wales d.> 1266
- b.~ 1141 in Warkworth Castle, Alnwick, Northumberland, England d.1178
- b.< 1177 in Warkworth Castle, Alnwick, Northumberland, England d.1212 in Warkworth Castle, Alnwick, Northumberland, England
- b.< 1141 in Hedingham, Essex, England d.> 1185 in Warkworth Castle, Alnwick, Northumberland, England
- b.~ 1185 in Warkworth Castle, Alnwick, Northumberland, England d.1225
- b.~ 1125 in Horsford, Norfolk, England d.1174
- b.~ 1165 in Horsford, Norfolk, England d.1214 in Warkworth Castle, Alnwick, Northumberland, England
- b.~ 1140 in Poynings, Sussex, England
- b.~ 1255 in Helmsley Castle, North Ride Yorkshire, England d.BET 12 MAY AND 16 AUG 1316 in Wark Castle, Wark-on-Tweed, Northumberland, England
- b.1113 in Belvoir Castle, Leicestershire, England d.< 1168 in Belvoir Castle, Leicestershire, England
- b.> 1146 in Belvoir Castle, Leicestershire, England d.01 May 1236 in Offington, England
- b.~ 1075 in Tunbridge, Kent, England d.1134 in Little Dunmow, Essex, England
- b.< 1134 in Little Dunmow, Essex, England
- b.1093 in Tunbridge, Kent, England d.1140 in Belvoir Castle, Leicestershire, England
- b.~ 1170 in Belvoir Castle, Leicestershire, England d.17 Oct 1242 in Banks, England
- b.1094 in Forest & Vale, Redsedale, Northumberland, England d.1162 in Prudhoe, Hexham, Northumberland, England
- b.~ 1125 in Prudhoe, Hexham, Northumberland, England d.1182 in Castle Prudhoe, Northumberland, England
- b.1152 in Castle Prudhoe, Northumberland, England d.1208 in Belvoir Castle, Leicestershire, England
- b.~ 1098 in Diss, Norfolk, England d.14 Jul 1179 in Chipping Ongar, Essex, England
- b.1129 in Lucy, Maine, Normandy, France d.1197 in Castle Prudhoe, Northumberland, England
- b.1090 in Ely, Cambridgeshire, England d.1179 in Holy Trinity Church, London, England
- b.BET 1233 AND 1235 in Belvoir Castle, Leicestershire, England d.15 Jun 1301 in Newstead, Lincolnshire, England
- b.BET 1233 AND 1235 in England d.> 1285 in Belvoir Castle, Leicestershire, England
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