In Mattimeo we return to Redwall with Matthias, Cornflower and their son Mattimeo. Mattimeo is a spoiled mouse as the son of Redwall's warrior, but after being kidnapped by slavers, him and other Redwall babies learn to grow up while their parents fight to save them.
I rather enjoyed revisiting Redwall and being able to see what Matthias and the family was up to.