William Parr, 1st Marquess of Northampton

Sir William Parr
1st Marquess of Northampton 1st Earl of Essex Baron Parr of Kendal
Spouse(s)	Lady Anne Bourchier Elisabeth Brooke Helena Snakenborg
Father	Sir Thomas Parr
Mother	Maud Green
Born	14 August 1513 Blackfriars, London, England
Died	27 October 1571 Warwick, England
Buried	St. Mary's Collegiate Church, Warwick, England

William Parr, 1st Marquess of Northampton, 1st Earl of Essex and 1st Baron Parr, KG (14 August 1513 – 28 October 1571) was the son of Sir Thomas Parr and his wife, Maud Green, daughter of Sir Thomas Green, of Broughton and Greens Norton. William Parr was brother of the Queen consort, Catherine Parr, the sixth and final wife of Henry VIII, and Anne Parr.

On 9 February 1527, Parr married Anne Bourchier, 7th Baroness Bourchier, daughter of Henry Bourchier, 2nd Earl of Essex. On 17 April 1543, their marriage was annulled by an Act of Parliament and her children (by her lover) were declared bastards. Parr also obtained his ex-wife's lands and titles, being created Earl of Essex.

He later married Elisabeth Brooke, daughter of George Brooke, 9th Baron Cobham. Their marriage was declared valid in 1548, invalid in 1553, and valid again in 1558.

He was Edward VI's 'beloved uncle' and one of the most important men at Edward's court, especially during the time of John Dudley, 1st Duke of Northumberland's time as leader of the government. Parr, and especially his wife, were leaders in the attempt to put Lady Jane Grey on the throne after Edward's death. He had been created Baron Parr of Kendal in 1539, Earl of Essex in 1543 and Marquess of Northampton in 1547. Northampton was convicted of high treason and sentenced to death on 18 August 1553 after the accession of Mary I. He was, however, released in the autumn. His titles were restored to him by Elizabeth I in 1559.

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