to declare how many knights he had enfeoffed and how many were super dominium, with the names of all. It appears that the survey was designed to identify baronies from which a greater servitium debitum could in future be obtained by the king. An example is given from the return of Lambert of Etocquigny: To his reverend lord, Henry, king of the English, Lambert of Etocquigny, greeting. Know that I hold from you by your favour 16 carucates of land and 2 bovates by the service of 10 knights. In these 16 carucates of land I have 5 knights enfeoffed by the old enfeoffment: Richard de Haia holds 1 knight's fee; and he withheld the service which he owes to you and to me from the day of your coronation up to now, except that he paid me 2 marks. Odo de Cranesbi holds 1 knight's fee. Thomas, son of William, holds 1 knight's fee. Roger de Millers holds 2 knight's fees. And from my demesne I provide the balance of the service I owe you, to wit, that of 5 knights. And from that demesne I have given Robert de Portemort of 1 knight's fee. Therefore I pray you that you will send me your judgement concerning Richard de Haia who holds back the service of his fee, because I cannot obtain that service except by your order. This is the total service in the aforesaid 16 carucates of land. Farewell. Summons to Parliament The privilege which balanced the burden of the servitium debitum was the baron's right to attend the king's council. Originally all barons who held per baroniam received individual writs of summons to attend Parliament. This was a practical measure because the early kings almost continually travelled around the kingdom, taking their court (i.e. administration) with them. A king only called a parliament, or council, when the need arose either for advice or funding. This lack of a parliamentary schedule meant that the barons needed to be informed when and where to attend. As baronies became fragmented over time due to failure of male heirs and descent via co-heiresses (see below), many of those who held per baroniam became holders of relatively small fiefdoms. Eventually, the king refused to summon such minor nobles to Parliament by personal writ, sending instead a general writ of summons to the sheriff of each shire, who was to summon only