Delvin was a long-term friend to Rand and a fellow shield-bearer. He also wielded a thick, short sword. Delvin's generosity was well-known throughout the mice of any patrol he had ever served in, and he often put the needs of any other mouse in his party above his own.
The winter of 1152 saw shortages of food and medicine at Lockhaven. Gwendolyn sent patrols of Guardmice to various settlements to secure the necessary supplies. Delvin, Aubrey and Bastian joined a patrol led by Sienna which journeyed to the settlements of Elmwood, Whitepine, Dawnrock, Thistledown and Wildseed. Later that season, Delvin attended Celanawe's funeral ceremony.
During the spring of 1153, Gwendolyn sent Delvin and Bastian to hunt down a snapping turtle near the settlement of Grasslake. Delvin slashed the turtle with his sword while Bastian peppered the reptile with arrows.