Where does “Чаушеску” come from?

Чаушеску (Russian) comes from Romanian Ceaușescu, from Romanian -escu, from Romanian -esc, from Latin -ēscō, from Proto-Italic *-ēskō.

Ancestry of “Чаушеску”, step by step

StepLanguageWordMeaning
1RomanianCeaușescu—
2Romanian-escusuffix forming many Romanian surnames, e.g....
3Romanian-esc-esque, -ish; Used with a stem to form the...
4Latin-ēscōAttaches to a stem (a noun or adjective) to form a verb meaning “to become [stem]” or similar
5Proto-Italic*-ēskō—
Every word from Proto-Italic *-ēskō →Every word from Romanian -escu →Every word from Latin -ēscō →