John Beauchamp, 1st Baron Beauchamp of Warwick
Admiral of the Fleet Sir John Paveley de Beauchamp, 1st Baron Beauchamp de Warwick KG( c. 1316 – 2 December 1360) was the third son of Guy de Beauchamp, 10th Earl of Warwick, and brother of Thomas de Beauchamp, 11th Earl of Warwick, with whom he became a founder and the tenth Knight of the Order of the Garter in 1348.
Philippa de Beauchamp
Philippa de Beauchamp (before 1344-6 April 1386) was the daughter of Thomas de Beauchamp, 11th Earl of Warwick and Katherine Mortimer.
On or before 1 March 1350 she married Hugh de Stafford, 2nd Earl of Stafford, son of Ralph de Stafford,
1st Earl of Stafford and Margaret Audley, Baroness Audley.
Philippa and Hugh had seven children.
Margaret de Stafford
Margaret Stafford( born c. 1364; died 9 June 1396) was the daughter of Hugh de Stafford, 2nd Earl of Stafford, and Philippa de Beauchamp.
She was the first wife of Ralph Neville, 1st Earl of Westmorland, and the grandmother of the 2nd Earl.
Hugh Stafford, 2nd Earl of Stafford
Hugh de Stafford, 2nd Earl of Stafford, KG (c. 1342 – 16 October 1386) was an English nobleman.
Katherine de Stafford
Katherine de Stafford, Countess of Suffolk( born around 1376 – 8 April 1419) was a daughter of Hugh de Stafford, 2nd Earl of Stafford and his wife Philippa de Beauchamp.
By her marriage to Michael de la Pole, 2nd Earl of Suffolk, she became known as the Countess of Suffolk.
Edmund Stafford, 5th Earl of Stafford
Edmund Stafford, 5th Earl of Stafford and 1st Baron Audley, KB, KG( 2 March 1377 – 21 July 1403) was the son of Hugh de Stafford, 2nd Earl of Stafford and Philippa de Beauchamp.
He inherited the earldom at the age of 18, the third of three out of four brothers to inherit the title.
His eldest brother, Sir Ralph, died before inheriting the title and his other two elder brothers died without issue.
William de Beauchamp (1185)
William de Beauchamp( c.1186–1260) was a British judge and High Sheriff.
Joan FitzAlan, Baroness Bergavenny
Joan de Beauchamp, Baroness Bergavenny( née FitzAlan; 1375 – 14 November 1435) was an English noblewoman, and the wife of William de Beauchamp, 1st Baron Bergavenny of the Welsh Marches.
Pierre-Joseph de Beauchamp
Pierre Joseph de Beauchamp( 28 June 1752, Vesoul 18 November 1801, Nice) was a French diplomat, clergyman and astronomer.
He was the son of the lawyer Xavier de Beauchamp.
He was made vicar general to his uncle Miroudot du Bourg, titular bishop of Baghdad and set out for Aleppo with him in 1781.
The following year he reached Baghdad with the French consul Jean- François Rousseau and the botanist André Michaux.
After travelling to Persia, de Beauchamp returned to France in 1790.
He was made a member of the Institut d'Égypte on 7 September 1798, joining its physics section during the Institut's third session.
From 3 March 1795 he became consul at Muscat, Oman.
He was then sent on a conciliatory mission to Ottoman sultan in Constantinople by Napoleon Bonaparte.
He left Alexandria on 13 February 1799, but his ship was captured by the Royal Navy en route.
As the Ottomans had by now declared war on France, de Beauchamp, the French chargé d'affaires to Constantinople and the whole French ambassador's staff were all imprisoned at Yedi Kule.
de Beauchamp died soon after his eventual return to France upon the Treaty of Amiens.
Alphonse de Beauchamp
Alphonse de Beauchamp( 1767–1832) was a French historian.

Question: What nationality is Philippa De Beauchamp's husband?
Answer: English