William Willoughby, 1st Baron Willoughby of Parham

William Willoughby, 1st Baron Willoughby of Parham
Church of St Mary, Parham, Suffolk
Spouse(s)	Elizabeth Heneage Margaret Garneys
Issue Charles Willoughby, 2nd Baron Willoughby of Parham
Father	Sir Christopher Willoughby Mary Willoughby
Mother	Elizabeth Tailboys
Born	c.1515
Died	30 July 1570

William Willoughby, 1st Baron Willoughby of Parham (c.1515 – 30 July 1570) was an English nobleman and soldier who in 1547 was made an hereditary peer of the House of Lords.

William Willoughby was the son of Sir Christopher Willoughby of Parham, Suffolk, and Elizabeth Tailboys, daughter of Sir George Tailboys, de jure 9th Baron Kyme. His father, Sir Christopher Willoughby, was a younger brother of William Willoughby, 11th Baron Willoughby de Eresby, who died without male issue in 1526, leaving a daughter, Katherine. The 11th Baron had settled lands on his brother, Sir Christopher, at his marriage with Elizabeth Tailboys, but had died before the lands had been transferred, resulting in a dispute which was ultimately settled by an Act of Parliament which divided the lands between Sir Christopher and his niece, Katherine, who had married Charles Brandon, 1st Duke of Suffolk.

William Willoughby's father was the second son of Sir Christopher Willoughby (c.1453 – 1498/9) of Parham, de jure 10th Baron Willoughby, by Margaret Jenney (d.1515/16), the daughter of Sir William Jenney.

According to Bindoff, he was almost certainly the William Willoughby who in 1536 was in service with King Henry VIII's illegitimate son, Henry Fitzroy, as William Willoughby's uncle, Gilbert Tailboys, 1st Baron Tailboys of Kyme, had by then married Henry Fitzroy's mother, Elizabeth Blount.

Willoughby succeeded his father at some time between July 1538 and October 1540, and was knighted in January 1542. He was elected to Parliament as knight of the shire (MP) for Lincolnshire in 1545. He was then raised to the peerage under letters patent 16 February 1547, with the remainder to his heirs male of body. The creation of the barony gave right to an hereditary peerage and seat in the House of Lords. From 1550 to 1552 he served as lord deputy of Calais and adjacent marches.