Names don't normally survive intact when crossing languages; even more so when crossing multiple languages (original -> Greek -> Latin -> English).
Examples from Wikipedia:
- The Greek name for Alexander is Alexandros (Ἀλέξανδρος).
- The Persian name for Alexander is Iskandar (اسکندر).
- Porus is a similarly Latinized version of the Greek version (Πῶρος) of the Sanskrit name Purushottam (पुरुषोत्तम).