Prydain is a fictional land featured in the "Chronicles of Prydain," a series of five fantasy novels written by Lloyd Alexander. The stories are inspired by Welsh mythology and follow the adventures of a young pig-keeper named Taran as he seeks to become a hero and protect his homeland from various threats. The series includes the books "The Book of Three," "The Black Cauldron," "The Castle of Llyr," "Taran Wanderer," and "The High King." Throughout his journey, Taran encounters a variety of characters, including Eilonwy, a princess, and Fflewddur, a bard, as they confront the dark forces led by Arawn, the Lord of Death.