How to Find Out If Your Korean Ancestor Was a Collaborator — the Right 3 Steps
The short answer first: a surname and clan seat (bongwan) alone can never tell you whether your ancestor collaborated with Imperial Japan — a single Korean clan can have hundreds of thousands of members. A real answer takes three steps: ① search the public records → ② verify you have the right person → ③ confirm the blood line in your family's jokbo (genealogy book). This guide is written for overseas Koreans researching family history.
Step 1 — Search the public records
Enter a surname and bongwan, or a person's name (hangul or hanja), on Chinilpa Scanner to search three public records at once:
· The 1,006 collaborators officially designated by a Korean government commission (2006–2009)
· About 4,600 people listed in the Biographical Dictionary of Pro-Japanese Collaborators (2009)
· More than 19,000 independence activists honored in the official merit records
Worth knowing: the data holds four times more independence activists than collaborator entries. People who start digging into their Korean roots more often find a hero than a collaborator.
Step 2 — Make sure it's the same person
Namesakes are the most common source of false alarms. Even with a matching name, always cross-check the birth and death years (do they fit your ancestor's generation?), the registered hometown (bonjeok), and the hanja spelling of the name against your family's records. Each person page shows all of these plus the original source.
Step 3 — Confirm the lineage in a jokbo (the only real proof)
Even a perfect match of name, dates and hometown does not prove kinship. That can only be established through a jokbo — the clan genealogy book. Locate the person's branch (pa) and generation (se) and trace whether the line connects to yours. If your family abroad has no jokbo, the clan association (jongchinhoe) in Korea or the National Library of Korea's genealogy collection can help.
Three common misconceptions
"Same clan means we're related." — The Gimhae Kim clan alone has over four million members. A bongwan marks a shared founding ancestor, not a family relationship.
"No search result means a clean record." — The lists only include officially confirmed individuals. 'Not listed' simply means 'not in the public record.'
"Everyone on a list carries the same verdict." — The government designation (1,006 people) and the scholarly dictionary (about 4,600) are separate records with different criteria. See What is chinilpa? for the difference.
If you find an independence hero instead
Congratulations. Descendants of honored activists may register as bereaved family with Korea's Ministry of Patriots and Veterans Affairs, and unrecognized activists can be nominated for posthumous honors. Procedures follow Korean government rules.
One thing to remember
Article 13(3) of the Korean Constitution: no citizen shall be treated unfavorably on account of an act committed by a relative. An ancestor's record is history, not a descendant's burden. This service helps you read public records — it passes judgment on no one.