Where does “ursaro” come from?
ursaro (Esperanto) comes from Esperanto -aro, from Russian -а́рь, from Proto-Slavic -ařь, from Gothic -𐌰𐍂𐌴𐌹𐍃, from Proto-Germanic -ārijaz, from Latin -ārius, from Proto-Italic *-āzios.
ursaro (Esperanto): a sleuth of bears
Ancestry of “ursaro”, step by step