Family Group SheetHUSBAND | IJsbrand Jacobs | BIRTH | 1674 | Workum | REF # | | 21565; | MARRIAGE | 27 April 1721 | Pingjum | MARRIAGE | 18 January 1711 | Pijttje Sijtses; Pingjum | FATHER | Jacob NN | | WIFE | Trijntje Ybles | REF # | | 21723; |
| CHILDREN | 1. | Jacob IJsbrands MALE | | BIRTH | 24 September 1713 | Wonseradeel | REF # | | 21724; | MARRIAGE | 18 November 1742 | Yttie Jorkes; Pingjum |
| 2. | Sietse IJsbrands MALE | | BIRTH | 1718 | Wonseradeel | REF # | | 21733; |
| 3. | Sjouke IJsbrands MALE | | BIRTH | 1721 | Wonseradeel | REF # | | 21734; |
| 4. | Douwe IJsbrands MALE | | BIRTH | 1724 | Wonseradeel | REF # | | 21736; | MARRIAGE | 23 February 1749 | Teetske Jakobs; Franeker |
| 5. | Sjeuwke IJsbrands FEMALE | | BIRTH | 1727 | Wonseradeel | REF # | | 21735; |
| 6. | Hittie IJsbrands FEMALE | | BIRTH | 1730 | Wonseradeel | REF # | | 21737; |
| 7. | Iebeltje IJsbrands FEMALE | | BIRTH | 1733 | Wonseradeel | REF # | | 21738; |
| 8. | Trijntie IJsbrands FEMALE | | BIRTH | 21 October 1736 | Wonseradeel | REF # | | 21739; |
| 9. | Yble IJsbrands (Blanksma) MALE | | BIRTH | 2 July 1740 | Wonseradeel | REF # | | 21740; |
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