You know what? Name your kid this if you want. Haters gonna hate, but don't give them the satisfaction of stomping your name-related dreams to the ground. Gerasimos may be a mouthful, but personally, I think it's neat. It has a kind of "wise old bearded guy OF POWER" feel to it, as if the presence of a Gerasimos should be accompanied by all manner of ominous chanting. This may hamper your future child's use of the library, however.
https://el.wiktionary.org/wiki/%CE%93%CE%B5%CF%81%CE%AC%CF%83%CE%B9%CE%BC%CE%BF%CF%82 [noted -ed]