Until recent times, the Dutch adhered to a particular naming convention for their children.  Even here in the States we see this practice continued up until the 20th century.  This naming convention makes the job of us genealogists a bit easier - if we are able to back trace through the generations.  Here is how it worked.

Son 1 - named after father's father
Son 2 - named after mother's father
Son 3 - named after father's paternal grandfather
Son 4 - named after mother's paternal grandfather
Son 5 - named for father's maternal grandfather
Son 6 - named for mother's maternal grandfather

Daughter 1 - named after mother's mother
Daughter 2 - named after father's mother
Daughter 3 - named after mother's maternal grandmother
Daughter 4 - named after father's maternal grandmother
Daughter 5 - named after mother's paternal grandmother
Daughter 6 - named after father's paternal grandmother

Of course there were exceptions to the above rules, but that was how it generally worked.

Now... taking the children of Jacob Cornelis Kruize and Eiske Jacobs Dam, we have listed:

Hindrik Jacobs - 1788-1854
Jacob Jacobs - 1790-1867
Tryntje Jacobs - 1792-1806
Derk Jacobs - 1793-1796
Derk Jacobs - 1796-1865
Egbert Jacobs - 1799-1847
Sibold Jacobs - 1801-1833
Klaas Jacobs - 1802-1865
Stijntje Jacobs - 1806-1877

Do the names fit?  Are there hidden secrets buried here??

We know from Jacob Kruize's death certificate that he was onegt (illegitimate) - meaning we do not know who his father was.  He was born out of wedlock.  I don't know if this was before or after the death of Trijntje Sybolt's first husband, Hindrik Jans.  But we can gather some information from discovered records.  Here are the knowns:

Jacob Kruize's maternal grandfather's name was Sibolt.
Jacob Kruize married Eiske Jacobs Dam.
Eiske's father was named Jacob Derks.
Eiske's paternal grandfather was named Derk.
Eiske's mother was named Styntje Egberts.
Eiske's maternal grandfather was named Egbert.

Here then are Jacob Cornelis Kruize and Eiske Jacobs Dam's children...

Hindrik Jacobs - Hindrik should be named for Jacob's father.  Apparently the first son was given the name of Jacob's "step" father Hindrik.  What should the name have been?  Given that Jacob's patronymic is Cornelis - Cornelis should be the name of the first son.  It is not. 

Jacob Jacobs - Jacob should be named for Eiske's father.  He was.

Tryntje Jacobs - Tryntje should be named for Eiske's mother.  She is not.  She is named for Jacob's mother.  Why? 

Derk Jacobs - Derk should be named for the father's paternal grandfather.  We don't know this information.  But apparently Derk was named for the mother's paternal grandfather.  This probably because of the flip-flop situation with Tryntje.  Or because they did not know themselves.

Egbert Jacobs - Egbert should be named after the father's maternal grandfather.  The mother's maternal grandfather's name was Egbert. 

Sibold jacobs - Sibold should be named after the father's paternal grandfather.  He was.

Klaas Jacobs - Klaas should be named after the mother's maternal grandfather.  Not certain who Klaas was named after.  But the mother's maternal grandfather's name was Egbert.

Stijntje Jacobs - Stijntje should be named after the father's mother.  She was not.  She was named after the mother's mother.

So what we have is not typical.

And there may be clues here. 

HINDRIK JACOBS - JACOB
JACOB JACOBS - EISKE
TRYNTJE JACOBS - JACOB
DERK JACOBS - EISKE
EGBERT JACOBS - EISKE
SIBOLD JACOBS - JACOB
KLAAS JACOBS - UNK
STINTJE JACOBS - EISKE

And Jacob's patronymic Cornelis - does this hold a clue?  Why wasn't jacob's firstborn named Cornelis? 

More information pending as I search for answers.

Klaas Jacobs married Albertje Pieters on 31 Dec 1824 in Stedum.  One of the prime witnesses was his own mother whose signature appears below.  This is a grand find.

I received a 3rd message from Stedum Historical Archivist Jeroen Hillenga.  He tells us about the Eiske Jacobs Dam Kruizinga household (Jacob Cornelis Kruizinga had passed away).  I have shared this message on the Jacob Cornelis Kruize page.

I received a message back from the Stedum/Loppersum historical archivist concerning the present existence of Jacob Cornelis home.  The home no longer exists.  It was destroyed sometime from 1953-1962.  I was able to glean some additional information from what the archivist wrote.

There was a population register of Stedum in 1830 in which Jacob's widow - Eiske Jacobs Dam - is mentioned as still living in the house of Jacob's death (no. 95) - with her daughter, son-in-llaw, and grandchild.  Eiske died in 1838.  Her daughter moved with her family to Westeremden (a nearby village).  This daughter would have to be Stijntje - the last of Jacob's children.

Eiske Jacobs Dam also appears in the register of real properties: she owned the home no. 95.  This register, introduced in 1832, would not have included Jacob as he was deceased.   The number of the home location (per the land registration record) is A44.  It is not actually in Stedum but outside Stedum in an open field by a road that is called Hemerterweg (road to Hemert).  This road still exists.

I have posted pictures and full-length letters to Jacob's page.  Click here.