Question: Who is John De Bohun, 5Th Earl Of Hereford's maternal grandmother?
Sentence (from "Humphrey de Bohun, 7th Earl of Hereford"): Humphrey de Bohun, 7th Earl of Hereford, 6th Earl of Essex, 2nd Earl of Northampton, KG( 25 March 1341 – 16 January 1373) was the son of William de Bohun, 1st Earl of Northampton and Elizabeth de Badlesmere, and grandson of Humphrey de Bohun, 4th Earl of Hereford by Elizabeth of Rhuddlan, daughter of King Edward I.
Relevant evidence: No