This is Ronald Alexander Jesterhoudt geboorte datum 2 April 1951 te Amsterdam.  This is to advise you that I am the son of Cornelis Jesterhoudt.  I am not dead, as it says in your geneologie.  --Groetjes uit New Westminster, Canada.

On the page where you found this information there is somewhere a green button that you can use to inform the author of the publication. He or she can adapt the information.

According to www.stamboomzoeker.nl

your name is only mentioned in one publication, and that´s someone else

https://www.genealogieonline.nl/stamboom-ooms-ringeling/I26769.php

And according to Google, you are mentioned on the website Ancestry,
which has nothing to do with this forum,

and here www.jesterhoudt.eu where the email adresss of the owner can be found. Good luck !

And according to Google, you are mentioned on the website Ancestry,
which has nothing to do with this forum,

That's not true, see below:

What you see here is a free hint that I get for my tree on Ancestry. And this suggests that for some time up to 2015, Genealogie Online indexes were shared with Ancestry. I guess that no new indexes are shared, because if they were, the end date would not be 2015.

I often see hints from a publication that I made here before 2015, and it looks like this index will stay on Ancestry forever.

I stand corrected, Enno.
My knowledge about websites like Ancestry is minimal.

I did some further research, and found a leak on Genealogie Online:

https://www.genealogieonline.nl/stamreeks-victoria-wilhelmina-warrens/I7518.php

In this profile of Ronald's father. last updated in 2009, there is a note that mentions his name, and a date range that suggests that he's dead. And such notes get past the privacy filters when they're attached to dead people.

In this particular case there is also no way to contact the tree author, so it looks like we need Bob to hide the profile.