Cassington was divided into different manors. Odo granted the mesne lordship of the largest manor to Ilbert de Lacy and two smaller manors to Wadard, a knight in William's court. Ilbert de Lacy's manor at Cassington became part of the honour of Pontefract and passed to de Lacy's descendants, the Earls of Lincoln.
Cassington was divided into distinct areas of control. Odo allocated the largest area to Ilbert de Lacy and two smaller areas to Wadard, a knight in William's court. Ilbert de Lacy's estate at Cassington eventually became part of the Pontefract territory and was inherited by his descendants, the Earls of Lincoln.