Where does “Torosian” come from?

Torosian (English) comes from Armenian Թորոսյան, from Armenian Թորոս, from Old Armenian Թորոս, from Old Armenian Թէոդորոս, from Ancient Greek Θεόδωρος, from Ancient Greek δῶρον, from Proto-Hellenic dṓron, from Proto-Indo-European déh₃rom — to give.