William de Ros, 2nd Baron de Ros

William de Ros, 2nd Baron de Ros of Helmsley (c.1288 – 3 February 1343) was the son of William de Ros, 1st Baron de Ros.

As 2nd Baron de Ros of Hamlake, Werke, Trusbut & Belvoir, he was summoned to Parliament during the reigns of Edward II and Edward III of England. In 1321 he completed the religious foundation which his father had begun at Blakeney. He was created Lord Ross of Werke. He was appointed Lord High Admiral and was one of the commissioners with the Archbishop of York, and others, to negotiate peace between the king and Robert de Bruce, who had assumed the title of king of Scotland.

William de Ros was buried at Kirkham Priory, near the great altar.

Marriage and issue
William de Ros married, before 25 November 1316, Margery De Badlesmere (c.1306 – 18 October 1363), eldest daughter of Bartholomew de Badlesmere, 1st Baron Badlesmere, by Margaret, daughter of Sir Thomas de Clare, by whom he had two sons and three daughters:


 * William de Ros, 3rd Baron de Ros.
 * Thomas de Ros, 4th Baron de Ros.
 * Margaret de Ros, who married Sir Edward de Bohun.
 * Maud de Ros, who married John de Welles, 4th Baron Welles.
 * Elizabeth de Ros, who married William la Zouche, 2nd Baron Zouche of Harringworth.

Maud survived her husband by many years and was one of the very few English people present at the Jubilee, at Rome, in 1350; the king had tried to prevent the attendance of his subjects at this ceremony on account of the large sums of money usually taken out of the kingdom on such occasions.