Makardhwaja is son of Hanuman, who makes his appearance in epic Ramayana. When Hanuman took a dip in the waters of sea, after burning whole of Lanka with the fire burning on his tail, a drop of his perspiration fell in to mouth of a mighty fish.
Lord Rama had two sons - Luv and Kush. My question is who was the elder one i.e. the first son of Lord Rama.