[Aquiles is a masculine name, without -N- and without -A- and its nickname is Quiles.] ... The nickname for José María is Chema (Jose María>Josema>Jochema>Chema); Chepo could be a nickname for José (through its old variant Josefo/Josepo). Chepa is a colloquial word, too, meaning "hump, hunch".
Chepo is baby boy name mainly popular in Christian religion and its main origin is . Chepo name meanings is May he add, God shall add.