How is it more practical to create classes for saving in the database and working with them?

Question

WPF

There is a Person class, it has a numeric Name field where the Id of the record from the table with names is stored.
How practical would it be?
Create a NameStr string field in the Person class and decorate it with the NotMapped attribute.
Or
Create class PersonStr inheriting from Person.
The process of writing a program in the active phase, any changes are not terrible.