Siebert Immigration to the US by Year You can find out when most of the Siebert families immigrated to the United States. You can focus your search to immigration records dating from that era. Name History and Origin for Siebert Naming patterns can help you learn more about your family s cultural and ethnic background.rigin: Seibert has it's origins as a Germanic Patronymic name. It has 40 some-odd variations in spelling and pronunciation. It's original spelling came from two root words, 'siege' and 'beraht', meaning 'victorious & brilliant one, famous'.