இராகவன் (Tamil) comes from Tamil ராகவன், from Sanskrit राघव, from Sanskrit रघु, from Proto-Indo-Iranian Hlagʰúš, from Proto-Indo-European h₁léngʰus, from Proto-Indo-European h₁lengʷʰ- — light.
இராகவன் (Tamil): Raghava, an epithet of Rama