Sentence:  And be it further ordained and enacted by the Authority aforesaid, That the Right and Title of the said Ecclesiastics of the Seminary of Saint Sulpice of Montreal, in and to all and singular the said <WSD>Fiefs</WSD> and Seigniories of the Island of Montreal, of the Lake of the Two Mountains, and of Saint Sulpice, and their several Dependencies, and in and to all Seigniorial and Feudal Rights, Privileges, Dues, and Duties arising out of and from the same, and in and to all and every the Domains, Lands, Reservations, Buildings, Messuages, Tenements, and Hereditaments within the said several <WSD>Fiefs</WSD> and Seigniories now held and possessed by them as Proprietors thereof, ... shall be and they are hereby confirmed and declared good, valid, and effectual in the Law; ... 
Meaning of the word marked with <WSD> tags:  An estate held by a person on condition of providing military service to a superior.