Memorial, of course.
Feudalism.
A court appointed executor has the power to sell the real estate if the power to sell real estate was granted in the will or by a license of the court. If the beneficiary is the sole beneficiary and the proceeds from the sale of the real estate are not needed to pay debts then the beneficiary may be able to obtain a ruling from the court against the selling of the real estate.
Life estate is an interest in real property. It is measured by the life of the person that it has been granted to. As long as they are alive, they have that right in the property. Once they die, it ceases to exist and goes to the remainderman, the person listed to get it after their death.
Earldom
Plantation
A piece of land granted to a vassal in exchange for oaths of loyalty and support is called a fief. The ceremony at which this was done was called commendation.
It is true that a fief is the troops of knight that was granted to the vassal.
A peasant who is bound to land is a serf, while a fief is an estate granted to a vassal.
A vassal.
Subinfeudation may be looked at as a layering of responsibility. Subinfeudation was when a vassal would sublease a portion of his lord's estate to another man who then became his vassal.
A vassal was a person in a state of mutual obligation with a king, which usually gave the vassal an estate, including manors. A serf was a person in a state of mutual obligation with the lord of a manor. As such the serf was possibly a person who worked on the estate of a vassal. Please see the links below.
When someone with a life estate remarries, it can complicate the ownership rights and future disposition of the property. The new spouse may have certain rights or claims on the property depending on the laws of the jurisdiction. It is recommended to consult with a legal professional to understand how the remarriage may impact the life estate.
The knights were originally the heavy cavalry. The word knight came to be a title, usually given by a monarch, and was regarded as the lowest level of the nobility. A vassal was a person who had a relationship of mutual obligation with a lord. The vassal sword loyalty and obedience, and the lord granted land and protection in exchange. A vassal could be a knight, and a knight could be a vassal, but there was nothing saying they had to be.
This is called an investiture. Investitures were common in the 11th and 12th centuries. The land the vassal was given is called a fief.
Vassals were people who had entered into a feudal contract with their lords. As part of the feudal contract, each was required to protect the other. Usually, this meant the vassal gave military support to the lord, but the lord was obliged to support the vassal in the event that the vassal was attacked. In exchange for military support, the vassal got a fiefdom or land grant, which was an estate from which he could get an income.
The agreement you are referring to is called "subinfeudation."
First, a noble would hand a bit of land called a fief to one of his most trusted being called a vassals in exchange for protection like a knight. The vassal must swear and oath that he will be loyal to his noble. A noble who gives a fief to a knight is called a lord. This vassal may hand a bit of land to another vassal, who we'll call vassal B and he shall swear an oath and so on. So one can be a lord and vassal.