Robert Mainwaring Lord of Rosthorn

  Noted events in his life were:

• Background Information. ⁷²⁰
Robert, son of Roger, added to the estates given to him by his father by purchasing the Manor of Rostherne, a moiety of the ville of Tatton, which in the next generation passed by a daughter in marriage to William de Mascy, a nephew of Hamon, Baron of Dunham-Massey. William was the first of the line of Mascy, Lords of Rostherne, which ended about the time Edward IV was king of England. At this time, Joan, the only daughter and heir of Sir Geoffrey de Massey conveyed the estates in marriage to the son and heir of Sir William Stanley of Holt castle.
~County Families of Lancashire and Cheshire, p. 363