Margaret Fenne was the daughter of Sir Hugh Fenne. She married Sir George Nevill, 4th and de jure 2nd Baron Bergavenny, son of Sir Edward Neville, 3rd and de jure 1st Baron Bergavenny, and Elizabeth Beauchamp, Lady Bergavenny, before 1469. She died on 28 September 1485.
As a result of her marriage, Margaret Fenne was styled Lady Bergavenny.
Children of Margaret Fenne and Sir George Nevill, 2nd Lord Abergavenny:
1) Jane Nevill, d. bef. 26 Oct 1538
2) William Neville
3) Richard Neville, d. abt. 1515
Elizabeth Neville
4) Sir George Neville, 3rd Lord Abergavenny, b. abt. 1469, d. abt. 1535
5) Sir Edward Neville, b. 1471, d. 8 Dec 1538
6) Sir Thomas Neville, b. abt. 1480, d. 29 May 1542