Possibly the same Clementia LE BOTELER who was mistress to King John and mother of Joan PLANTAGENET, who married to Llywelyn 'Fawr' AB IORWERTH in 1205.
Marriage Information:
Clementia married Sir Nicholas DE VERDUN, Knt., son of Bertram DE VERDUN and Rohese DE SALFORD. (Nicholas DE VERDUN was born after 1175 in Alton Castle, Cheadle, Staffordshire, England and died shortly before 23 Oct 1231 in Farnham Royal, Buckinghamshire, England.)