Where does “Mărtinescu” come from?

Mărtinescu (Romanian) comes from Romanian Mărtin, from French Martin, from Latin Martīnus, from Latin -īnus, from Proto-Italic -īnos, from Proto-Indo-European -iHnos, from Proto-Indo-European -no- — adjectival suffix.

Ancestry of “Mărtinescu”, step by step

StepLanguageWordMeaning
1RomanianMărtinbird of either the starling family, or of the kingfisher family
2FrenchMartinbird of either the starling family, or of the kingfisher family
3LatinMartīnus
4Latin-īnusof or pertaining to; -ine
5Proto-Italic-īnosof/belonging to
6Proto-Indo-European-iHnosCreates adjectives of materials
7Proto-Indo-European-no-adjectival suffix
Every word from Proto-Indo-European -no-Every word from Latin -īnusEvery word from Latin Martīnus