Legends of Caspian: Master Tage

"Caspian!" Master Tage exclaimed turning from a bubbling beaker. Caspian entered and returned the greeting. He looked around. The dome shaped hut was full of odd things. A suit of armor stood in a corner. In the opposite corner, an anvil rested next to a bellows and mallet. A round table went around the room with baskets of plants, thick worn books, flasks and beakers, and sketches of catapults and other systems stacked haphazardly all over it. Caspian began to tell him all that had happened, but Master Tage raised his hand. "I know it all," he said simply, "And I can help you." He turned to the table and pressed something underneath it. There was a creak and a hidden drawer popped out of the table. A golden glow seemed to rest in it. Master Tage smiled and lifted up a shining golden medallion.
"Wow," Caspian breathed looking at it. The design was two twin lions separated by a sword. Master Tage placed it over Caspian neck. Caspian flipped it over and saw one word engraved on the back. Gelon. Gelon. This was his fathers medallion!
"Do you know the story of this medallion?" Master Tage asked.
"No."
"I will tell you for I held your father on my lap when he was yet a babe. Many years ago there was a young man, about your age, who was one of the most able and good hearted warriors ever known to mankind. He fought the Turks far away in the Holy Land. Before he left, he gave this medallion to me, his school teacher. He said to guard it until he returned. Weeks turned into months, and months into years, and years into a decade. Then Gelon returned, but he was in chains. Far away in the Holy Land, wicked men working for the Usurper," with Usurper, Master Tage was referring to King John "convinced him that King Richard was an evil tyrant and managed to sway him to the Usurpers side. In prison he became even more corrupted, until King Richard left himself on a crusade and King John came to the throne. Then he was released along with his wife and young twins, you and Mardina." Caspian was silent.
"What does this medallion do for me?" he asked.
"It proves you are Gelon's heir. Keep it safe until your father dies, then you can come to the throne and set all to right."