1975’s Cart and Cwidder is the first book in Diana Wynne Jones’ Dalemark Quartet.
Osfameron Tanamoril Clennenson — Moril for short — has spent his life travelling from town to town with his father Clennan, mother Lenina, and siblings Dagner and Brid. The family troupe makes a living as travelling entertainers, messengers, and occasional escort for travellers in strife-torn Dalemark. In the course of their travels, they frequently cross from North Dalemark to South Dalemark and back.
A brutal encounter at a lakeside campsite ends their travels.