Moril is one of three children of the traveling musician Clennen the Singer, and at the beginning of Cart and Cwidder, he travels with his family around Dalemark giving musical performances at numerous small towns, and between those towns, sleeping either in the family's wooden caravan or camped out around a fire. Near the beginning of the novel, his father makes him a present of the largest cwidder - an amazing stringed instrument that Moril is just beginning to be big enough to handle. That gift, and other events, sets in motion the changes that drive events in the novel.
Moril appears again in The Crown of Dalemark. He had set off after the events of that first book, to accompany another minstrel, Hestefan the Singer, on a tour of Northern Dalemark. This seemed better to Moril than going back to his mother's new home with her new husband, or living off the charity of his friend Kialan Kerilsson, with whom he'd shared adventures in the first book.
In this book, he finds himself going along with Hestefan at first as an equal, but more and more treated as a servant until at one point, Hestefan tries to take his cwidder on the principle that as the master of his apprentice, he owns all the musical instruments in the wagon. Moril objects strongly to this, and luckily is supported by others in their party. The two of them are among a group of people traveling with a young lady named Noreth Onesdaughter, who intends to have herself named Queen of all Dalemark. Moril, his cwidder, and his growing sense of connection with a group of people from all over Dalemark, grows a great deal through the course of this novel, and in many ways comes into his own.