I've spent decades attempting to trace genealogy in Italy (my Father is 100% Italian) and many of my family tree have run into a dead end being told my Great-grandfather was adopted (where I believe my Great-grandfather was raised by his mother but with a different Father & step-siblings).
If/when my wife and I do make our way to Italy, do you have any sites that you would suggest as memorable places to visit in the Fabriano/Ancona area?