Where does “Butnăreanu” come from?

Butnăreanu (Romanian) comes from Romanian Butnaru, from Romanian butnar, from German Büttner, from Middle High German bütenære, from Middle High German -ære, from Old High German -āri, from Proto-West Germanic -ārī, from Proto-Germanic -ārijaz — Forms relational adjectives to nouns (and rarely numerals).

Ancestry of “Butnăreanu”, step by step

StepLanguageWordMeaning
1RomanianButnaru
2Romanianbutnarcooper
3GermanBüttnercooper
4Middle High Germanbütenærecooper
5Middle High German-ære
6Old High German-āriused to form agent nouns
7Proto-West Germanic-ārī-er
8Proto-Germanic-ārijaz-er
9Latin-āriuser
10Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)
Every word from Proto-Italic *-āziosEvery word from Latin -āriusEvery word from Proto-Germanic -ārijaz