1st Earl of Cornwall Piers Gaveston
1284 - 1312 (28 years)(
= Descendancy chart to this point, 
= Expand, 
= Collapse)
- 1 1st Earl of Cornwall Piers Gaveston [1] b. 1284 d. 19 Jun 1312
- Margaret de Clare b. 1293 d. 13 Sep 1342
- 2 Amie Gaveston [1.1] b. Aft 6 Jan 1312 d. 30 Nov 1357
- John de Driby b. 1310 d. 12 Oct 1357
- 3 Alice de Driby [1.1.1] b. 1340 d. 12 Oct 1412
- Anketil Thomas Mallory b. 1340 d. 26 Mar 1393
- 4 Lady Beatrice Mallory [1.1.1.1] b. Abt 1364 d. 1429
[ =>]
- 4 Clementia Mallory [1.1.1.2] b. Abt 1368 d. 1431
[ =>]
- 4 William Mallory [1.1.1.3] b. 1375 d. 1445
[ =>]
- 4 Lady Beatrice Mallory [1.1.1.1]
- 3 Alice de Driby [1.1.1]
- 2 Amie Gaveston [1.1]