maybe her at 1861, but not more info like you still have. Nicholas i could not find, have taken some variants of the firstname, but he must be at aprt of list which is not shown "our search produced 170 results. Only 100 can be displayed online. Please add further search criteria or send us an individual search order."http://www.dad-recherche.de/hmb/search_engl.asp?Nachname=Dem...
"if you would like to receive all the information available about an emigrant in this list, go to the checkout. Against payment of € 15.00 we will send you the complete data record as a PDF file (see Examples). You may also select several emigrants (Selection basket) and continue your search."
maybe this info would state more....?http://www.dad-recherche.de/hmb/index.html