Thanks for the great reply.

Cool to hear another perspective from someone who's changed theirs - and the spelling reversal similarity quite interesting. Lemark is cool.

I've also heard Rok is pretty common in Romania, and maybe even Croatia - so I guess native to that region.

Similarly, I can't attest the change to having any radical effects - but then again, perhaps so - just subtly and not seemingly striking over the course of time. Nonetheless, it's undoubtedly been a significant transformative influence...