The father of Jan Aardappel was Simon Jans Aardappel. Simon died 10-3-1835 Wierhuizen, son of Jan Simons and Grietje Mennes. Simon was baptized 11-10-1767 Hornhuizen.
Geertruid Menkes Knol, wife of Jan Aardappel died 16-5-1830 Kloosterburen, daughter of Menke Jans Knol and Trientje Tonnis. She was baptized 1-12-1771 Wehe.
Simen Jans and Geertruid Menkes married on 27-11-1796 Hornhuizen.
Jan Aardappel was baptized 2-1-1799 Groningen.
Menke Jans married Trientje Tonnis around 1769. A marriage contract was made. Witnesses were:
Groom: Pouwel Jacobs, brother in law; Willem Menkes, uncle; Sijwert Menkes, uncle
Bride: Luitje Derks, uncle; Roelf Lippes, married to an aunt.