Iestyn ap Gwrgant
- David Crouch
Iestyn ap Gwrgant (fl.c. 1081–c. 1120), nobleman, was an important Welsh magnate, of whom little is known outside two references to him in the Book of Llandaff, datable to the time of Bishop Herwald (1059–1104). In one, he made reparations to the episcopal community at ...