A more thorough explanation:

DE RECTO DE RATIONABILI PARTE

De recto de rationabili parte is a legal term that means "of right of reasonable part." It refers to a writ that allowed a person who owned land in fee simple to obtain a rightful share from other coparceners or blood relatives. This writ was abolished by St. 3 & 4 Will. 4, ch. 27.

An example of de recto de rationabili parte would be if two siblings inherited a piece of land from their parents. If one sibling wanted to sell their share of the land, the other sibling would have the right to buy it at a reasonable price. This is because both siblings have an equal right to the land, and the writ ensures that each receives a fair share.

Another example would be if a person inherited a large estate from their parents, but had several siblings who also had a claim to the property. The person could use the writ to ensure that each sibling received a reasonable portion of the estate, rather than one person taking the entire property.

These examples illustrate how de recto de rationabili parte was used to ensure fairness and equity in property ownership among family members.