In 1235, the 19th year of the Reign of Henry III, (House of Plantagenet), the Lancaster Royal Grammar School was established.
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After Tostig's possession, Skerton was retained in demesne by the Lords of Lancaster; in 1094, demesne tithes from Skerton were granted to St Martin's at Sees by Count Roger of Poitou, (See Roger the Poitevin).