Where does “Sinescu” come from?

Sinescu (Romanian) comes from Romanian sin, from Old Church Slavonic сꙑнъ, from Proto-Slavic synъ, from Proto-Balto-Slavic sū́ˀnus, from Proto-Indo-European *suhnús.

Ancestry of “Sinescu”, step by step

StepLanguageWordMeaning
1Romaniansinson of
2Old Church Slavonicсꙑнъson
3Proto-Slavicsynъson
4Proto-Balto-Slavicsū́ˀnusson
5Proto-Indo-European*suhnús—
Every word from Proto-Indo-European *suhnús →Every word from Proto-Balto-Slavic sū́ˀnus →Every word from Proto-Slavic synъ →