church of Poulton and the chapel of Bispham was granted by the archdeacon of Richmond to the priory of St. Mary, and half a century later John Romanus, archdeacon of Richmond, confirmed the gift, bestowing on it in addition the remaining mediety, to be received when death had removed the present holder. A clause in the document stipulated that immediately the second mediety had been appropriated a vicar should be appointed at a salary of twenty marks (£13 6s. 8d.) per annum.[71] Here again it is clear that some time in the interval between 1199 and 1246 the lands and living of Poulton had once more been forfeited or disposed of by the Lancaster monastery, but in the absence of any records bearing on the subject, the manner and reason of the relinquishment must still continue enveloped in a veil of mystery. From 1246 the vicarage of Poulton remained attached to the Lancaster foundation until the dissolution of alien priories, when it was conveyed to the abbey of Sion, in Middlesex, and retained by that convent up to the time of the Reformation in 1536. Alien priories, it may be explained, were small monastic institutions connected with the abbeys of Normandy, and established on lands which had been granted or bequeathed to the parent houses by William the Conqueror or one of his followers. They were occupied by only a very limited number of brethren and members of the sisterhood. A prior was appointed over each, his chief duty being to collect the rents and other monies due from their estates, etc., and transmit them over to Normandy. Such immense sums were in that way annually exported out of the country, that it was ultimately deemed expedient by the king and his ministers to suppress all priories of this description.