I just noticed a discrepancy. The Dutch website where I found records of our ancestors (translation here) says the following:
Jan Dirksz de Jong
- Baptized: 5 Oct 1777 in Schoorl
- Died: 17 Jun 1814 in Schoorl
- Occupation: Farmer
- Son of: Dirk Pietersz de Jong and Aagje Jans Kluft.
- Married 15 Feb 1801 in Schoorl with Maartje Jans Hoogvorst
Maartje Jans Hoogvorst
- Born: (+/-) 1774
- Died 29 Oct 1842 in Schoorl.
- Occupation: 1st woman marriage, 2nd marriage
- Daughter of: Jan Hoogvorst and Trijntje Pietersdr Eenigenburg.
5 children of Jan Dirksz de Jong & Maartje Jans Hoogvorst are listed
- Dirk Jansz de Jong (b. 1801)
- Jacob de Jong (b. 1802, d. 1803)
- Jan de Jong (b. 1806)
- Jacob de Jong (b. 1808)
- Pieter de Jongh (b. 1811)
I’m not clear what “1st woman marriage, 2nd marriage” means. It’s possible the meaning was lost in translation.
But that’s not the only mystery. The record says Maartje Hoogvorst died in 1842 in Schoorl, 7 years before her sons Jacob and Pieter immigrated to Chicago. But an 1870 census record found by Judy Hine Strom puts Maartje in Chicago, 28 years after.