
The Hungarian version of the Latin "Clemens" name. It is a common surname in Hungary and in Transylvania (the western part of Romania that once belonged to Hungary). "Clemens" also means forgiving, kind and gentle.
...
Balázs Déri thinks :
Some of Kelemen families in Upper Hellás now called Hungary may heve descended from Meneklés (Men-e-kel ) from Athénai.