Earl Roger of Norfolk Bigod
Roger of Norfolk was born about 1150 in Norfolk, Norf, England..  He died before August 2nd, 1221 in Thetford, Norf, England..

 Isabel (or Ida) Plantagenet
Isabel (or Ida) was born about 1154 in Norfolk, Norf, England..

 Earl Hugh of Norfolk Bigod
Hugh of Norfolk was born about 1186 in Thetford, Norf, England..

 Mary Bigod
Mary was born about 1196 in Thetford, Norfolk, Norf, England..