Anyone could appoint an agent, an "attorney", to appear in court on his behalf, it being assumed that the principal could not be present and royal authorization given. A wife could represent her husband. The principal was then bound by the actions of his agent. Gradually men appeared who made a business of representing whoever would employ them. The common law system became committed to the "adversary system" with the parties struggling judicially against each other. The Royal Court took jurisdiction over issues of whether certain land was civil or ecclesiastical [assize utrum], and therefore whether the land owed services or payment to the Crown or not. It also heard issues of disturbance of advowson, a complex of rights to income from a church and to the selection of a parson for the church [assize of darrein [last] presentment]. By this assize, the identity of the patron who last presented an incumbent to a particular church could be discovered. Many churches had been built by a lord on his manor for his villeins. The lord had then appointed a parson and provided for his upkeep out of the income of the church. In later times, the lord's chosen parson was formally appointed by the bishop. By the 1100s, many lords had given their advowsons to abbeys. This procedure used twelve recognitors selected by the sheriff. As before, the land of any person who had been outlawed or convicted of a felony escheated to his lord. His personal property, goods, and chattels became the King's. If he was executed, his heirs received nothing because they were of the same blood as the felon, which was corrupt: "corruption of the blood". The loss of civil rights and capacities after a sentence of death for felony or treason, which resulted in forfeiture of property and corruption of the blood, was called "attainder". There were two courts of the sheriff: the shire court for civil and criminal matters and the sheriff's tourn for petty crime only. The shire and borough courts heard cases of felonies, accusations against freemen, tort, and debts. The knights made the county courts work as legal and administrative agencies of the Crown.