Wincey was a young female mouse who was orphaned by rats under command of the Foxwolf Urgan Nagru. She was marooned on the Island of the Wrecked Ships with Benjy and Figgs. They lived as an adoptive family in a small tent on the island near the cove of shipwrecks, though the trio originated from Southsward.
As Wincey never knew her father, she gave the title to Burrom, who cared for the young ones until she died from a head injury. Benjy kept Burrom's death a secret from Wincey and Figgs.
They were found by Finnbarr Galedeep, Joseph the Bellmaker, Rufe Brush, Durry Quill, and Hon Rosie.
Wincey, Benjy, and Figgs were adopted by Gael Squirrelking and Squirrelqueen Serena after the Battle for Southsward.