Edmund Mortimer

Early that year, Glendore's men ambushed and captured Lord Grey near Ruthen, and Henry IV eventually paid a ransom, reportedly 10,000 marks, to get him back.

On June 22nd, at Bryn Glass near Pillith, Glendore caught a Herefordshire army under Sir Edmund Mortimer coming up a steep hillside.

The Welsh archers in Mortimer's own ranks turned and shot into the English line, and somewhere between 600 and 1,000 Englishmen were slain on the field of combat.

English chroniclers claimed the Welsh women who followed the army desecrated the bodies afterward, though modern historians believe the story was likely propaganda.