GAVESTON, 1st Earl of Cornwall Piers
1284 - 1312 (28 years)( = Descendancy chart to this point, = Expand, = Collapse)
- 1 GAVESTON, 1st Earl of Cornwall Piers [1] b. 1284 d. 19 Jun 1312
- + DE CLARE, Countess of Gloucester, Countess of Cornwall Margaret b. 12 Oct 1293 d. 9 Apr 1342
- + DE CLARE, Countess of Gloucester, Countess of Cornwall Margaret b. 12 Oct 1293 d. 9 Apr 1342