:No, I'm not "sure", I just recently came across this -laidas stuff. However some points to clarify: I have so far found only Skerdilaidas in an Illyrian compound (I don't know of any other Illyrian -laidas examples in a compound), and only that Greek Sthenelaidas so far. Your explanation of Sthenelaidas sounds plausible but not mandatory, if you have some references for that explanation please share, because we are in need of more info here.