Here are a few suggestions. :)
Bellerophon - or Bellerophontes. I've seen it suggested as "slayer of Bellerus". From phone^ meaning "to murder".
Demonax - first element must be de^mos "the people".
Dexagoridas - first element could be related to dexia "right hand, good" = Latin dexter.
Lykophron - second element could be phronis "wisdom".
Pelopidas - could refer to the Peloponnese?
Pentheus - from pentheo^ "bewail, lament".
Serapion - from Greek Sarapis/Serapis, refers to the Egyptian god Osiris-Apis.
Sisyphus - see
http://www.perseus.tufts.edu/cgi-bin/ptext?doc=Perseus%3Atext%3A1999.04.0058%3Aentry%3D%2329602