William de Mesnilwarin

  Noted events in his life were:

• Background Information. ⁷¹³
We known that William was the son of Roger de Mesnilwarin because of his father's grant to the abbey of St. Werburgh listed him and his brother Randle as witnesses and sons. William was the father of Roger de Mesnilwarin, who was the father of Sir Ralph Mainwaring.

~George Ormerod's The History of County Palatine and City of Chester, Vol III, pp. 226 & 229