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≈ Reconstructed person · research hypothesis

Harmen Abrahams Costerius

observed 1638–1644possible birth 1544–163827 observations2 name variantsmedium confidence

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Why are these mentions grouped?

Name normalization or a strong historical spelling match and compatible chronology support this grouping. Less distinctive names require narrower time windows or recurring relationships.

Method code: fuzzy-name+adaptive-chronology-v2

Observed name forms: Harmen Abrahams Costerius · Harmen Abrahamz Costerius

Supporting registrations

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