I suppose Poabst is somewhere related to 'Pabst', don't know exactly where or when. If you are interested in the Pabst family in the Netherlands upto 1712 please visit my site http://www.pabst.nl
. I hope you might find something of your interest. If you have any thing that might be of interest for me or if you find a link to your family please let me know through the contact page of my site.