In the year 1242 we find the House of May appealing to the Court of the Archdeaconry of Lothian against the encroachment of an ecclesiastic. The case for the monks was that Adam Black, of Dunbar, had bequeathed to them a house and croft, together with two "perticates" of arable land, but that, at his death, the property in question had been occupied and unjustly detained by Patrick, Chaplain of Dunbar. When the matter came before the authorities, Patrick could not deny the justice of the claim put forward. That he himself was not without some justification for the course he had taken is suggested by the decision of the Court. It was that he should remain in possession of the house and grounds, but should make to the Priory a payment of three shillings a year for them. This settlement was made by William Mortimer as representing the Bishop of St. Andrews, and by Baldred, Dean of Lothian, within the parish church of Haddington, in presence of the incumbent and of the vicar of North Berwick.[215] When David I conveyed the Priory of May to the Monks of Reading, he also granted them the lands of Rindalgros, in Perthshire, where another cell for monks was erected, subject to the House of May. Here, too, questions of property and privilege brought the monks into conflict with their neighbours. Thus, between them and Duncan of Inchesiryth a dispute arose with regard to their respective fishing rights. The matter was so adjusted that both parties should be entitled to cast their nets in the contested waters, as it might suit them, and with no further restriction than the common use of the country.[216] The records of the Priory also furnish details of disputes that arose between the Monks of May and other religious houses. Thus, in 1231, a case in which they were the pursuers came before a commission appointed by the Pope, and consisting of the Prior and of the Archdeacon of St. Andrews, together with the Dean of Fife. They complained that, although the church of Rind, with the teinds of the whole parish, belonged in property to them, the Brethren of Scone detained from them the tithes of four fishings--namely, of Sleples, Elpenslau, Chingil, and Inchesiryth--all situated within the bounds of the parish. After hearing the pleadings, allegations, and exceptions of both parties, the judges and their legal assessors decided that, for the sake of peace, the Monks of Scone should pay two merks of silver yearly to the House of May, and should, in return, be held free from all claims for the tithes.[217]