If you can read this line, the file format.css from BK is missing! (must be lower case file name.)
Johann Theodor Heyermann #1
geb. 1715 Borbeck, Germany
Heir. 5 Nov 1747 Borbeck, Germany
Elisabeth Storp #3
geb. vor 1689 Borbeck, Germany

Heinrich Heiermann/Heyerman #2
geb. vor 1689 Borbeck, Germany
Heir. 3 Nov 1709 Borbeck, Germany

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Vorfahren-Stammbaum von: Johann Theodor Heyermann