If your family is from the northern provinces, or Jewish, you may find them in name taking records. When the civil registration was introduced, people who did not have a last name yet were required to record their last name. In such cases, the name taking record is often the earliest record you will find for your name.
Sometimes, clues about the origin of your name can be found in the name taking records. For example, a carpenter may had called himself Houtsma (hout = wood), an ancestor living in Camstraburen may have called himself Camstra or an ancestor who used Sipkes as a patronymic may have called himself Sipsma.