Where does “Алёша” come from?

Алёша (Russian) comes from Russian Алексе́й, from Russian Алекси́й, from Ancient Greek Ἀλέξιος, from Ancient Greek -ῐος, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Алёша (Russian): an idiot or irresponsible person

Definitions

an idiot or irresponsible person

Ancestry of “Алёша”, step by step

Step	Language	Word	Meaning
1	Russian	Алексе́й	Alpha (A in the ICAO spelling alphabet)
2	Russian	Алекси́й	—
3	Ancient Greek	Ἀλέξιος	helper, defender
4	Ancient Greek	-ῐος	belonging to; of”, “belonging to”, “pertaining to
5	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

Every word from Proto-Indo-European -yós →Every word from Ancient Greek -ῐος →Every word from Ancient Greek Ἀλέξιος →