Sir William de Ros Lord of Helmsley

  General Notes:

~Weis' Ancestral Roots of Certain American Colonists Who Came to America before 1700, 8th Edition, 89:28, 170:26, 237:7, son of Robert de Ros, Magna Charta Surety, and his wife Isabella, the natural daughter of William the Lion, of Scotland, Sir William de Ros married Lucy Fitz Piers, the daughter of Piers Fitz Herbert. They were the parents of Sir Robert de Ros and Sir William de Ros. ¹⁶⁰

~Magna Carta Ancestry: A Study in Colonial and Medieval Families, p. 826 ⁸²¹

~Weis's Magna Charta Sureties, 116:3 ⁸⁴⁴

  Information about this person:

• Background Information. ¹⁴¹
Sir William de Ros, son and heir, did homage for his inheritance on 23 Dec 1226. He had been included with his father in the special Bull of excommunication, Jan 1215/16. He remained an active partisan of Prince Louis until the final battle of Lincoln, 19 May 1217, in which he was captured. He paid 20 marks to be delivered from prison and was handed over to his father in Oct 1217. In May 1224, he was sent to Poitou in the King's service, and in Aug of that year, he took part in the siege of Bedford Castle. He witnessed the promulgation of the Forest charter, Feb 1224/5, and accompanied Henry III in his expedition to France, 1230. In Jan 1235/6, he attested the confirmation of the Magna Charta at Westminister, and in 1237, he was one of the escorts of the King of Scots to his meeting with Henry at York, attesting the agreement between the two king. In 1242-1243, his lands were seized for his failure to attend, along with his peer, the muster at Rhuddlan, Aug 1241, and the King's expedition to France, May 1242. In 1244, he witnessed King Alexander's letter to the Pope. He went on a pilgrimage to Santiago in 1252. He was summoned, along with his son Robert, for service in Scotland, 1257/8, again in 1259 for service against the Welsh, and later, to London, with all his service due 1260 and 1261. In March 1263/4, he was again in the service of the King in Wales, with attendance first at a Council at Oxford. He seems to have taken part in the Baron's War, and was reputed to be loyal.

Sir William de Ros married Lucy, presumably the sister of Herbert Fitz Piers and his bother and heir Reynold Fitz Piers, and a daughter of Piers Fitz Herbert, lord of the Honor of Brecknock, who had a castle at Blaenllyfni. He died, probably in 1264, and was buried at Kirkham. His widow was living in the Michaelmas term of 1266.

~Cokayne's Complete Peerage, 2nd Edition, (Ros), Vol. XI , pp. 93-94

• Castle.

Helmsley Castle

William married Lucy Fila Piers, daughter of Piers Fitz Herbert Lord of Brecknock and Alice de Warkworth, in 1236 in Hamlake, Yorkshire, England ¹⁴¹.^,160 (Lucy Fila Piers was born in Brecknock, Wales and died after 1266 in England ¹⁶⁰.)