Where does “Mesropyan” come from?

Mesropyan (English) comes from Armenian Մեսրոպյան, from Armenian -յան, from Old Armenian -եան, from Proto-Indo-European -iyn̥.

Ancestry of “Mesropyan”, step by step

StepLanguageWordMeaning
1ArmenianՄեսրոպյան—
2Armenian-յանforming belonging/affiliation adjectives; forming...
3Old Armenian-եանforming belonging/affiliation adjectives; forming...
4Proto-Indo-European-iyn̥—
Every word from Proto-Indo-European -iyn̥ →Every word from Armenian -յան →Every word from Old Armenian -եան →