Robert "The Younger" Marmion , of Winteringham
Robert "The Younger" was born before 1194 in Tamworth Castle, Warwickshire, England.  He died before October 23rd, 1242 in Winteringham, Glanford Brigg, Lincolnshire, England.

 Avice Heiress de Tanfield
Avice Heiress de was born about 1205 in Tanfield, North Ride Yorkshire, England.  She died after 1284.

 William Marmion , of Winteringham & Coningsby,Sir
William was born before 1230 in Winteringham, Glanford Brigg, Lincolnshire, England.  He died before 1276 in Coninsgby, Horncastle, Lincolnshire, England.