Hello Gordon,
Though you have to be very cautious with copy-pasting information from genealogy sites online - always check/verify that information with records and documents:
on Genealogieonline (a Dutch company) a lot of Dutch (and non Dutch) are active and you can find quite of number of Beeken's in family trees there:
https://www.genealogieonline.nl/en/
Perhaps you can find some related to your family and from there contact other living Beeken's.
Genealogieonline also has 'sister' sites that can be linked to its genealogy information.
The most useful (IMHO):
https://www.openarch.nl/?lang=en
This is linked to many but not all municipal and regional archives in The Netherlands and Belgium.
And there is a forum, however for this you've got to sign up:
https://inloggen-bij-genealogie.coret.org/www.stamboomforum.nl/
www. geni.com and
www.geneanet.org (not Dutch companies) might be useful too to as a starting point.
Some people publish on more that one of these mentioned sites.
https://www.archieven.nl/en/ is similar to
https://www.openarch.nl/?lang=en - but a different initiative.
I do not know if there are any other municipal and regional archives in The Netherlands that have a forum like here at the BHIC. That is, I haven't found them yet in cities/regions elsewhere where I do my research, like in Zuid-Holland.
Perhaps other visitors of the BHIC Forum know more about this.
With regards,
Belem