Board Thread:General Discussion/@comment-6986530-20170321154902/@comment-2602:301:77AD:9270:C822:297D:979F:9021-20171107161306

We didn't say Kachelina was invalid because it was a surname, Octo said that all things being equal she preferred the common first name over the uncommon surname, so we just went with it because we have no way to know which one would be better. The only thing that was important was changing it from Kacherina, which we could be relatively sure was wrong.

This is not a thread to quibble endlessly over several different perfectly good translations, it's to retranslate things we are pretty sure are wrong into something we can be reasonably sure is correct. As has been stated multiple times, there is nothing wrong with Rennert with the information we have except that you don't like it.

If you would prefer to spell it as Lennart off the wiki on your own time then that's fine, but the fact is there's no REASON to change it aside from what you personally want to go with. It is a valid name, and all things being equal it's just as reasonable to assume it's his last name than first name.