rudi (Romanian) comes from Romanian rudă, from Old Church Slavonic роуда, from Proto-Slavic ruda, from Proto-Slavic rudъ, from Proto-Balto-Slavic roudos, from Proto-Indo-European h₁rowdʰ-o-, from Proto-Indo-European h₁rewdʰ- — red.
rudi (Romanian): to be or become a relative of someone