Author: Gareth Lloyd James.

Series: Cyfres Cawdel.

A story about a group of friends at the Urdd campsite, Glan-llyn. The main character, Glyn, and his best mates, Jac, Deian and Rhodri, are mischievous lads. They often get on Mr Llwyd's nerves, and he doesn't manage to control his pupils very well.

Awdur: Gareth Lloyd James.

Cyfres: Cyfres Cawdel.

Helyntion criw o ffrindiau yng ngwersyll yr Urdd, Glan-llyn. Mae'r prif gymeriad, Glyn, a'i ffrindiau pennaf, Jac, Deian a Rhodri, y n fechgyn drygionus a direidus. Maent yn aml yn mynd o dan groen e u hathro, Mr Llwyd, sy'n ei chael yn anodd iawn i reoli'i ddisgyblion.