 Further, to ensure a constant supply of water for his mill, FitzWalter evicted the owner of another watermill in nearby West Bergholt to use it as a backup for his own; the mill's owner was also a townsman of Colchester.FitzWalter's grievances against the men of Colchester may not have been without foundation.In 1342, claimed FitzWalter, Colchester men had invaded Lexden Park, in an attempt to assert their own rights of pasturing, hunting and fishing there.