medieval contracts no relation feudalism
A fief (; Latin: feudum) was a central element in medieval contracts based on feudal law. It consisted of a form of property holding or other rights granted by an overlord to a vassal, who held it in fealty or "in fee" in return for a form of feudal allegiance, services, and/or payments. The fees were often lands, land revenue or revenue-producing real property like a watermill, held in feudal land tenure: these are typically known as fiefs or fiefdoms. However, not only land but anything of value could be held in fee, including governmental office, rights of exploitation such as hunting, fishing or felling trees, monopolies in trade, money rents and tax farms. There never existed  a standard feudal system, nor did there exist only one type of fief. Over the ages, depending on the region, there was a broad variety of customs using the same basic legal principles in many variations.Early feudal grants
Originally, vassalage did not imply the giving or receiving of landholdings (which were granted only as a reward for loyalty), but by the 8th century the giving of a landholding was becoming standard. The granting of a landholding to a vassal did not relinquish the lord's property rights, but only the use of the lands and their income; the granting lord retained ultimate ownership of the fee and could, technically, recover the lands in case of disloyalty or death. In Francia, Charles Martel was the first to make large-scale and systematic use (the practice had remained sporadic until then) of the remuneration of vassals by the concession of the usufruct of lands (a beneficatium or "benefice" in the documents) for the life of the vassal, or, sometimes extending to the second or third generation.By the middle of the 10th century, fee had largely become hereditary. The eldest son of a deceased vassal would inherit, but first he had to do homage and fealty to the lord and pay a "relief" for the land (a monetary recognition of the lord's continuing proprietary rights over the property).
Historically, the fees of the 11th and the 12th century derived from two separate sources. The first was land carved out of the estates of the upper nobility. The second source was allodial land transformed into dependent tenures. During the 10th century in northern France and the 11th century in France south of the Loire, local magnates either recruited or forced the owners of allodial holdings into dependent relationships and they were turned into fiefs. The process occurred later in Germany, and was still going on in the 13th century.In England, Henry II transformed them into important sources of royal income and patronage. The discontent of barons with royal claims to arbitrarily assessed "reliefs" and other feudal payments under Henry's son King John resulted in Magna Carta of 1215.Eventually, great feudal lords sought also to seize governmental and legal authority (the collection of taxes, the right of high justice, etc.) in their lands, and some passed these rights to their own vassals.The privilege of minting official coins developed into the concept of seigniorage.
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