Isaak is getrouwd met Betje Nathan circa 1790 in Oisterwijk, , Noord-Brabant, Netherlands. Betje (dochter van Nathan Seligman en Caatje Hertog) is geboren circa 1763 in Oisterwijk, , Noord-Brabant, Netherlands; is gestorven op 27 jul 1853 in 's-Hertogenbosch, , Noord-Brabant, Netherlands. [Gezinsblad] [Familiekaart]

1. Dina Hijmans is geboren circa 1790 in Oisterwijk, , Noord-Brabant, Netherlands; is gestorven op 29 okt 1845 in 's-Hertogenbosch, , Noord-Brabant, Netherlands.
2. Nathan Heijmans is geboren in jan 1792 in Oisterwijk, , Noord-Brabant, Netherlands; is gestorven op 5 feb 1856 in 's-Hertogenbosch, , Noord-Brabant, Netherlands.
3. Daniel Heijmans is geboren op 26 feb 1794 in Oisterwijk, , Noord-Brabant, Netherlands; is gestorven op 2 feb 1835 in 's-Hertogenbosch, , Noord-Brabant, Netherlands; is begraven in Vught, , Noord-Brabant, Netherlands.
4. Izak Heijmans is geboren op 23 jan 1796 in Oisterwijk, , Noord-Brabant, Netherlands; is gestorven op 12 dec 1866 in 's-Hertogenbosch, , Noord-Brabant, Netherlands.
5. David Heijmans is geboren op 1 apr 1798 in 's-Hertogenbosch, , Noord-Brabant, Netherlands; is gestorven op 9 jun 1875 in 's-Hertogenbosch, , Noord-Brabant, Netherlands; is begraven in Vught, , Noord-Brabant, Netherlands.
6. Antje Heijmans is geboren op 7 apr 1801 in 's-Hertogenbosch, , Noord-Brabant, Netherlands; is gestorven op 23 feb 1889 in Winschoten, , Groningen, Netherlands.
7. Kaatje Heijmans is geboren op 10 apr 1802 in Den Haag, , Zuid-Holland, Netherlands; is gestorven op 18 dec 1883 in Den Haag, , Zuid-Holland, Netherlands.
8. Jacob Heijmans is geboren in 1802 in 's-Hertogenbosch, , Noord-Brabant, Netherlands; is gestorven vóór 1873 in Den Haag, , Zuid-Holland, Netherlands.
9. Fronika Heijmans is geboren op 2 jan 1804 in 's-Hertogenbosch, , Noord-Brabant, Netherlands; is gestorven op 17 nov 1885 in Winschoten, , Groningen, Netherlands.