Well, a relatively brief Internet search revealed this page of popularities, apparently for historical names:
http://snipurl.com/dtlf. Unfortunately, it's in Greek, which I can't read. However, the SPIonic (accented) form is coincides with barely legible English.
The most popular name overall seems to be
Dionysos. I couldn't make out the most popular feminine name, but it looks like Zwsi/mh on my screen; a variant appears as Zwsi/ma. Neither list has Konstantine / Kosta / any other variation thereof on it, but then again it's very hard to tell for me.
Some various good articles on Greek naming practices, though from the medieval era:
http://snipurl.com/dtle.
The first of those articles cites a
Konstantinos from 913 (
http://snipurl.com/dtlk). The second article (
http://snipurl.com/dtlj) records 52 men named Constantinus, two men each named Constantianus, Constantinianus, and Constantius, and four women named
Constantina. The fourth article (
http://snipurl.com/dtlm) cites two men named
Konstantinos, one in 1265 and the other in 1317. And the fifth article gives one
Konstantinos (
http://snipurl.com/dtln), though it doesn't provide a date.
I couldn't find any modern popularities, unfortunately.
Miranda
"Multiple exclamation marks are a sure sign of diseased mind" -- Terry Pratchett
Proud adopter of 15 punctuation marks. Check my profile for their names.