I don't know if we are related in any way, but my family also comes from groningen.
My name is Aineke (birthname: Antje) Spaak - born 1959
My father is Freerk Spaak, born in Ten Boer, Groningen on 21st december 1927. My grandfather was Feddrik Spaak.
If you want some more information, don't hesitate to et me know.
Oh, sorry, I live in Almere now but I was born in Groningen.
Regards,
Aineke Spaak