Family with parents
father Parents OmiusOomkens MariaBlencke	JanOomkens 1699–1748
mother Parents GerardusPierius LucretiaBorgesius	Alegonda ElisabethPierius 1701–1784
elder sister Family (none)	Maria JohannaOomkens 1730–1735
elder sister Family ArnoldusDijk EngelinaDijk Jan Oomkesvan Dijk Arnoldus OmiusDijk AeilkoDijk JacobusDijk	LucretiaOomkens 1731–1805
elder brother Family CatharinaEilerts OmiusOomkens	OmiusOomkens 1734–1761
elder sister Family (none)	MariaOomkens 1736–1736
elder brother Family (none)	GerardusOomkens 1738–1738
elder sister Family (none)	MariaOomkens 1739–1742
elder brother Family Gerhardina HaijolinaPierius Omius JanOomkens Dorothea AlagondaOomkens AdamusOomkens Alagonda ElizabethOomkens AefjenOomkens	GerardusOomkens 1741–1810
elder sister Family (none)	MariaOomkens 1744–1745
himself Family WijbijnaBandtsma NNOomkens HarmannaStheeman Alagonda ElisabethOomkens HaikoOomkens JanOomkens JanOomkens HaikoOomkens SijpkoOomkens Alagonda EilsabethOomkens Sijpko MariaOomkens	JanOomkens 1746–1832
Father’s family with Maria ElisabethKuijl
father Parents OmiusOomkens MariaBlencke	JanOomkens 1699–1748
step-mother Parents (unknown)	Maria ElisabethKuijl 1700–1726
half-sister Family (none)	MariaOomkens 1723–1723
half-sister Family Lucasvan Giffen Lambertusvan Giffen Janvan Giffen Lambertusvan Giffen Maria Elisabethvan Giffen Lucasvan Giffen Omiusvan Giffen Lambertusvan Giffen Alexandervan Giffen JanBoelens HendrikSmith	AbigaelOomkens 1724–1788
Family with WijbijnaBandtsma
himself Parents JanOomkens Alegonda ElisabethPierius	JanOomkens 1746–1832
wife Parents PetrusBandtsma	WijbijnaBandtsma 1745–1770
son Family (none)	NNOomkens