A more thorough explanation:

De identitate nominis is a Latin term used in law that means "of identity of name." It refers to a writ that is used to free a person who has been mistakenly arrested and imprisoned because they share the same name as someone else who is wanted by the law.

This writ is used to prove that the person who has been arrested is not the same person who is wanted by the law, and therefore should be released from custody.

For example, if there are two people with the same name, and one of them is wanted by the law, the other person may be mistakenly arrested and imprisoned because they share the same name. In this case, the person who has been wrongly arrested can use the writ of de identitate nominis to prove that they are not the same person who is wanted by the law, and should be released from custody.

Another example would be if a person is mistakenly arrested and imprisoned because their name is similar to the name of someone who is wanted by the law. In this case, the person who has been wrongly arrested can use the writ of de identitate nominis to prove that they are not the same person who is wanted by the law, and should be released from custody.

These examples illustrate how the writ of de identitate nominis is used to free a person who has been mistakenly arrested and imprisoned because of a mistaken identity.