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Jhr. Mr. Abraham Calkoen — latest news, discussion & facts — IJR
Jhr. Mr. Abraham Calkoen
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Jhr. Mr. Abraham Calkoen
14 Mar 1856 Alphen a.d.Rijn - 23 Feb 1935 's-Gravenhage
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Jkvr. Helena Maria Calkoen
Jhr. Godert Theodoor Adriaan Calkoen
Helena Florentina van Buttingha Wichers