I understand surnames and given names usually have some reason for existing, and have existed for several years. My question, I guess, really is: if someone were making up a completely different name for themselves and wanted to use kanji in their surname (or given name) could they use any combination of sounds (and any of their corresponding kanji) and still get a comprehensible name?
For instance, in English, I could say that Schterice is a name, but it really wouldn't make any sense and most people would think it was strange. It had no history and doesn't really seem to stem from any known names. Still, it would still be a valid name, yes? I would like to know if the same would apply to Japanese names?
It seems like a really strange question, but I am confused. Please and thank you, in advance.