Where does “одноимённый” come from?
одноимённый (Russian) comes from Russian одно-, from Russian оди́н, from Old East Slavic оди́нъ, from Proto-Slavic edìnъ, from Proto-Balto-Slavic edīˀnas, from Proto-Balto-Slavic aiˀnas, from Proto-Indo-European óynos — one; single.
одноимённый (Russian): having the same name
Ancestry of “одноимённый”, step by step