← Back to results

≈ Reconstructed person · research hypothesis

Johannes Koppen

observed 1823–1893possible birth 1821–18244 observations1 name variantsmedium confidence

Always inspect the supporting records.

Search all name mentions →

Why are these mentions grouped?

The indexed name is exact and distinctive.

Method code: exact-name+role-anchored-chronology

Supporting registrations

Read the method →