Adin knew that he was the one who must fill the medallions in the belt.
Annoltis is in need of more information! Annoltis is lacking a more detailed history with events from Annoltis' past (see The Sorcerers of Dorne in the 2013 edtion of Tales of Deltora and The Third Door) and his role in The Golden Door.
Annoltis, also known as Olt, is the older brother of Eldannen, better known as Sorcerer Dann, and Malverlain, called Verlain by his brothers and commonly known as the Shadow Lord. Olt was the Chieftain of Dorne after his father. He, like his brothers, is the son of the quarter-Fellan man named Peregrine and the female Fellan named Alenan.
Olt's younger brother Dann advised him for centuries until Olt decided to begin the tradition of the annual Gifting, which was a ritual happening every Midsummer Eve involving killing young people and sacrificing them so that Olt may live longer. Dann, who did not approve of what Olt was doing, gathered up his followers and left with them to found the walled city of Weld. 7 years after these events, Olt is killed during the second Gifting when Rye saves his friends and brother from being sacrificed to Olt, using the Sorcerer Dann's magic.
While younger, Olt had flaming red hair like his brothers, due to his Fellan ancestry.
In his old age, Olt's skin was hanging over his bones, was blotched with patches of grey-green that looked like fungus, and his thin lips were shrunken back from his teeth, which had become yellowed. His hands were thin to the point of being like those of a skeleton. Despite all this, his eyes, though sunken and ringed with shadow, were burning.
During the day of the Gifting that included Sonia, Dirk, Faene, and four other sacrifices, Olt was wearing a purple velvet cloak with a white-furred hood. 
In his younger years, Olt was described as being high-spirited, and handsome and popular like his father. He mixed with his people with ease, and loved the sea and all that was in it.
Annoltis is subject to a typo in The Third Door in chapter 24 - Nine Powers in which he is referred to as Annolt. This typo happens when Rye is telling Chieftain Farr and his people the story of the sorcerer Annoltis and his two brothers.