Mathilda DE PERCY 
- Born: Abt 1325, , , England
- Marriage: Sir John DE NEVILLE, Knt, 3Rd Baron Neville De Raby 
- Died: Bef 18 Feb 1378, , , England
Another name for Mathilda was Maud.
Sources, Comments and Notes:
"John Neville, 3rd Baron Neville de Raby
Spouse(s) Maud Percy and Elizabeth Latimer, 5th Baroness Latimer...
Six children by Maud Percy
Ralph de Neville, 1st Earl of Westmorland (1364-1425)
Thomas de Nevill, 5th Baron Furnivall (1377-1406)
Elizabeth de Neville (b. 1379)
Alice de Nevile (1379-1433)
Maud de Neville (b. 1379)
Eleanor de Neville (1379-1441), married Ralph de Lumley, 1st Baron Lumley. They were parents to Catherine de Lumley."
"Henry de Percy, 9th Baron Percy and 2nd Baron Percy of Alnwick (1299\endash 1352) ...
Married Idonia, daughter of Robert de Clifford, 1st Baron de Clifford, and had five children;
Henry, b.1320, succeeded his father as 3rd Baron Percy of Alnwick
Thomas Percy, Bishop of Norwich
Eleanor Percy, married John FitzWalter"
Source <The making of the Neville family in England, 1166-1400> Par Charles Robert Young:
"THE NEVILLE FAMILY (extract):
10. John de Neville, Lord of Raby d. 1388 = (1) Matilda Percy & = (2) Elizabeth Latimer
11. Ralph de Neville = (1) Margaret Stafford & = (2) Joan Beaufort (dau. of John of Gaunt)
Mathilda married Sir John DE NEVILLE, Knt, 3Rd Baron Neville De Raby  [MRIN: 645], son of Sir Ralph DE NEVILLE, 2nd Baron Neville De Raby  and Alice D'AUDLEY . (Sir John DE NEVILLE, Knt, 3Rd Baron Neville De Raby  was born in 1328 in Raby Castle, Durham, England and died on 17 Oct 1388.)