Clans
As with all Korean family names, the holders of the Hong surname are divided into different patrilineal clans, or lineages, based on their ancestral seat. Most such clans trace their lineage back to a specific founder. This system was at its height under the yangban aristocracy of the Joseon Dynasty, but it remains in use today. There are approximately 241 such clans claimed by South Koreans. Historically, there had been 10 clans known but currently there are four clans remained. Hong clan is composed including Namyang, Pungsan, Bugye and Hongju clan.
Read more about this topic: Hong (Korean Name)