Where did the last name Simpson come from?

The last name Simpson is a patronymic surname, which means that it is derived from the given name of the father. In this case, the name Simpson comes from the given name Sim, which is a short form of the name Simon. The name Simon is of Hebrew origin and means "he has heard." The name Simpson was first used in Scotland in the 13th century, and it is now one of the most common surnames in the English-speaking world.