Where does “Pietrăreanu” come from?

Pietrăreanu (Romanian) comes from Romanian Pietrari, from Romanian pietrar, from Romanian -ar, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

Ancestry of “Pietrăreanu”, step by step

StepLanguageWordMeaning
1RomanianPietrari—
2Romanianpietrarstonecutter, stonemason
3Romanian-ar-er
4Latin-āriuser
5Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)
Every word from Proto-Italic *-āzios →Every word from Latin -ārius →Every word from Romanian -ar →