I had no idea that Josef had a Facebook page! How can one have a Facebook page when one has been deceased for 70+ years?
Well, apparently "famous people", deceased or alive, get a Facebook page if they have a Wikipedia article. So the information on Josef's Facebook page is essentially the same information as is in Wikipedia.
There isn't much that one can do with Josef's Facebook page, other than "like it" and "share it" on my own Facebook.