Thanks, it's the same in Dutch really when you look at medieval texts. After a while though, the spellings became more unified.
I'm really looking for the trend where people
on purposely misspell a name (what we call 'kreativ' here). Not accidental misspellings or spelling variants from before the rules were set. I'm trying to find out roughly how old the first 'kreativ' spelling kids are now. Would some of them be thirty already? Or are the oldest kids around ten now? So that why I'm looking for the moment these names first started popping up.