31. He was imprisoned in the Tower of London in 1322 for having led the Marcher lords in a revolt against Tyburn. 32. In the play William de Braose, a young Marcher Lord , is discovered with Siwan in Llywelyn's bedchamber. 33. Nest later became the wife of Osbern fitz Richard, a marcher lord on the Herefordshire border, who acquired Binley. 34. Hostility deepened among the Marcher Lords when Despenser titled himself " Lord of Glamorgan " and " Earl of Gloucester ". 35. By the 13th century Wales was divided between native Welsh principalities and the territories of the Anglo-Norman Marcher lords . 36. By February 1326, it was clear that Isabella was involved in a relationship with the exiled Marcher Lord , Roger Mortimer. 37. Not content with his part, Despenser used his relationship with the king to impinge on the lands of other Marcher lords . 38. As such they tended to support the Welsh princes in their struggles against King Edward I of England and the Marcher Lords . 39. Throughout the 13th century the territory as described was gradually reoccupied by the English Marcher Lords : castle after castle were lost. 40. Ida was a daughter of Welsh Marcher Lord Reginald Grey, 2nd Baron Grey de Ruthyn and Eleanor Le Strange of Blackmere.
