I had a case awhile back which had several different sources for it, and there were two last names given. The difference was only one letter, but that didn’t just make it a different spelling; it made it a different name entirely. And I had an equal number of sources giving me both names. I had no idea which was the right one. Finally I just picked the more common surname. It was either that or not put the case up at all. I chose the lesser evil.
Well, turns out I was wrong. Sigh. I did the best I could.
Moan, whine, muttergrumble etc.