Hendrik van der Merwe Willemsz's second and third marriages happened late in his life, extending the closing dates for marriage in his generation by more than thirty years, and extending the latest dates for birth and marriage among his children and grandchildren up to forty years. I excluded those dates from this table, since those marriage and birth events represent a small proportion of their generation and serve to conflate the chronologies of the c and d generations.
dV&P; H&L, Hoge
| Declining Marriage to Immigrants in Three Generations of van der Merwes | |||
| gen b | gen c | gen d | |
| no. of children | 13 | 118 | 385 |
| birth date range | 1670–1698 | 1697–1727 | 1717–1762 |
| no. of marriages | 17 | 73 | 303 |
| marriage date range | 1684–1717 | 1717–1770 | 1741–1782 |
| no. of immigrant spouses | 12 | 6 | 22 |
| as percentage of total spouses | 70.59% | 8.22% | 7.26% |