Please excuse me for being a Hungarian speaker or a Magyarphile, but with regards to
Móric, according to this Hungarian website (
http://www.nevnap.com/nev/moric), Mórcsi doesn't seem to be used as a nickname/pet name for
Móric at all, however you are spot on about Móricka. This same website also lists
Mór as a nickname/pet name.
When I searched Mórcsi, Móricka and
Mór on another Hungarian website (
http://nevnapkereso.hu/), the results are the same.
Regarding
Klaudia, the first website lists Dia, Klau and Klaudi was nicknames/pet names for
Klaudia, however the second site lists Dia as a nickname/pet name for
Diána.
So, it looks like
Móric is covered, at least for now, however we would have to wait for a Hungarian speaker or a Magyarphile to respond to us just to check if I've got the nicknames/pet names for
Móric right and whether Dia is used as a nickname/pet name for
Klaudia,
Diána or both.
My PNL:
http://www.behindthename.com/pnl/149249My blog:
https://maybeitisdaijirou.wordpress.com