Sounds like my luck with Lantrum which has been seen as Lantron, and other LANTRON's seen as Lantern. I just noticed the "leiter" part withe the prefix Ohn. I am trying to find what our name origially was and this name had some similarities to mine, mine may be landrum though but our family rumour says our name was once O'lantrum, but since lantrum is a name that doesn't exist outside of my immediate line, then it had to be O'something else or De"Landrum. Your's may have taken some great change like mine did, well apparently since you can't locate many of them. Leiter sounds like many things. I wish you luck in your search, I know what you are going through!