J. Roelen, Bockhefte 1, 1938, S. 9, 70
J. Roelen, Bockhefte 2, 1939, S. 12 f.
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Johann BOYMANS | ____________________
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|--Gerhard BOYMANS
| (1725-....)x1760 Adam ERBERICH
| | (1590-1629)x1627
| Adam ERBERICH | Maria SCHAFSBERG >
| | (1628-1682)x1653 (1592-1658)
| Gerhard SCHAFSBERG |
| | (1667-1708)x1688 | Heinrich SCHROIFF >
| | | | (1592-1675)x1617
| | | Lucia SCHROIFF | Helena ESSER >
| | (1631-1696)x1653 (1593-1673)
| Katharina SCHAFSBERG | ____________________
(1694-....)x1719 | |
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| Elisabeth BREUER | ____________________
(1668-1730)x1688 | |
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