NGV Stambomenverzameling
Gezin: Isaac Claessens / Joanna Segers (F1420)
Maria Catharina Claessens (1743- ) |
| Veronica Claessens (1745- ) |
| Anna Isabella Claessens (1749- ) |
| Elisabeth Claessens (1753- ) |
Mathias Claessens (1754- )  |
Isaac Claessens (1756- ) 
|
| Joanna Segers (1758-1810) |
| Jacobus Claessens (1786- ) |
| Anna Cornelia Claessens (1788- ) |
| Cornelius Claessens (1790- ) |
| Maria Helena Claessens (1792- ) |
| Petrus Franciscus Claessens (1794-1796) |
| Petrus Josephus Claessens (1794-1796) |
| Henricus Claessens (1796- ) |
| Joanna Maria Claessens (1801-1802) |