richlv
true, but as far as i know, it is closed - we are not even allowed to use it in the first place.
ignoring that for a moment, matching by string with various sources can be helpful, but is not always a good idea. official sources can be wrong, out of date or otherwise limited. in this case, kadastrs actually does not have full street name - surely the person was not called "J." - "Jānis" would be a better guess, at least based on https://en.wikipedia.org/wiki/J%C4%81nis_Rudzutaks