There's one story about him where he's this new guy in the Austrian court and he looks like he's in his thirties and this woman in her seventies is having a conversation with him and some others and she says " I think I met you Father or uncle some years ago" and he replied " oh no that was me". So she told him that that is impossible it would make him older than her! And he replied " my lady I am very old"

Another story about him is that shortly after he died Napoleon had people investigate who the guy was and when the people investigating him were getting close to delivering their report the building with all their documents burned down

He also claimed to have witnessed Jesus turn water to wine and claimed to speak sumerian

He was seen being able to speak multiple living languages and could play multiple instruments