Theses praediorum militarium 100

17. [...that] one is not [noble]; another is Liege, another the opposite; one is Ancestral, another New. One is Masculine, another Feminine, another Mixed; one also may be given under a certain service, or otherwise, another without service; finally, one is proper, another the opposite.
18. These are acquired either by investiture or by succession.
19. For prescription of thirty years, and the delivery of possession made in the name of a Fief, and redemption can be applied to these.
20. An Archbishop, Bishop, Abbot, Abbess, Provost, or Lord of the people can perform investiture from secular goods and from an open old Fief, even without consulting the Roman Pontiff.
21. But it is forbidden to give in Fief the property of the Church which is subject to them, as well as tithes and first-fruits.
22. The Captains of the Kingdom, a Duke, a Marquess, and a Count can also give in Fief; and likewise the King’s greater Valvassors.
23. But lesser Valvassors cannot transfer even the smallest right of a proper Fief.
24. Truly, the investiture of a new benefice ought to be performed either before the peers of the court or before outsiders.
25. And it can be performed either without writing, or on the contrary, by a public instrument signed by the peers of the house.
26. Investiture (which is followed in order by Fealty, and this by Delivery) must be sought within a year and a day.
27. And it can be given and received through a messenger, agent, or proxy.
28. One performing investiture is precisely bound to delivery; nor is he released by paying the interest.
29. Nay, even his lay successor is bound without distinction to deliver true possession.
30. Furthermore, to the succession of a Fief, the descendants of him alone from whom the Fief took its origin are always called, unto infinity.
31. When these fail, it reverts to the Lord.
32. Women do not succeed in a Fief unless it be a Feminine one; or unless it has been so specifically agreed; or if they have redeemed it from the Lord; or unless it was given for that service which it is fitting for a woman to perform.
33. To a mixed Fief, both sexes are admitted.
34. A father cannot pre-allot a Fief to one of his sons.