Amounderness (Andernes in ancient times) is an area of England. In its most recent incarnation it was a hundred of Lancashire. Previously the name had been used for territories now in Lancashire and north of the River Ribble, that had been included in the Domesday Book's Yorkshire section.
He was the grandson of one Hervey Walter who, in the time of Henry I., held Witheton or Weeton in Amounderness, a small fee of the honour of Lancaster, the manor of Newton in Suffolk, and certain lands in Norfolk.
In the great inquest of Lancaster lands that followed a writ of 1212, this Hervey, named as the father of Hervey Walter, is said to have given lands in his fee of Weeton to Orm, son of Magnus, with his daughter Alice in marriage.
The new sovereign, treating his surrender of the castle as treachery, took the shrievalty from him, disseised him of Amounderness and sold his cantreds of Limerick land to William de Braose.