Liber beneficiorum
A Liber beneficiorum is a register concerning beneficials, benefactors, properties and privileges. Excerpt from such a book was accepted by civil courts as a righteous evidence during property disputes.
The oldest known Polish register of this kind is the liber beneficiorum dioecesis Cracoviensis by Jan Długosz from 1470–1480. Similar register has been made by Jan Łaski
