1. | Willem de Heer was born on 10 Aug 1855 in Rotterdam, ZH, NLD. Willem married Jacoba Pieternella de Hooge on 21 Aug 1889 in Rotterdam, ZH, NLD. Jacoba (daughter of Pieter de Hooge and Catharina Brandenburg) was born on 12 Sep 1868 in Rotterdam, ZH, NLD. [Group Sheet] [Family Chart]
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2. | Elias Adrianus Hendrik de Heer (1.Willem1) was born on 10 Aug 1890 in Rotterdam, ZH, NLD. |
3. | Catharina de Heer (1.Willem1) was born on 11 Mar 1892 in Rotterdam, ZH, NLD. |