Guurtje Klaas Grasboer was born circa 1788 to Klaas Grasboer (1753-1838) and Grietje Heddes (1754-) . She married Jacob Brakeboer (1791-) 9 May 1813 in Hoorn.
Children
| Name | Birth | Death | Joined with |
| Eefje Brakeboer (c1820-) | 1820 Hoorn, North Holland, Netherlands | Netherlands | Arie Breed (1820-1864) |
| Klaas Brakeboer (c1816-1818) | |||
| Eefje Brakeboer (c1815-1817) | |||
| Grietje Brakeboer (c1821-1822) | |||
| Grietje Brakeboer (c1827-1829) | |||
| Klaas Brakeboer (1814-1814) | |||
| Klaas Brakeboer (c1824-1828) | |||
Footnotes (including sources)
| ‡ General |
| ₪ Wedding |