[elkos]

My name is Ελευθέριος and I transliterate it as Eleftherios in English.

[spapas82]

There's a "standard" way of how greek words should be transliterated in English (ELOT 743). You can test it here https://www.passport.gov.gr/passports/GrElotConverter/GrElot...

And yes, Eleftherios is the correct transliteration :)

[elkos]

I know. I've even seen my name written as Eleytherios.