Where does “цесаревич” come from?
цесаревич (Russian) comes from Russian це́сарь, from Old East Slavic цѣсарь, from Proto-Slavic cěsařь, from Proto-Germanic kaisaraz, from Latin Caesar, from Latin caesaries, from Proto-Indo-European kéysero- — hair.
цесаревич (Russian): tsesarevich
Ancestry of “цесаревич”, step by step