I think it goes like that: KONSTANTINE means constant-stable
ALEXIOS means easy to move -flexible
They are both of byzantine origin!It is to honor Princes Alexia(aunt)...
MARIA - the name comes from Bible is the Mother of Jesus
OLYMPIA - is the place where ancient greece cosetrated in Peace for Olympic
Games or means the girl who lives in Olympos,so... Devine ???...
ACHILLEAS - was the Ancient king of Pylos - (Troy :

)
ANDREAS - was son of King George-Prince Andreas of Greece..I hope Iam right! If Iam wrong please corect me!!
Officially, in Greece there are Patronyms.E.g:We say Sakis Pouvas
touGianni,but for our Royals No because they all are recognisable by name!