The Partridge and the Peartree (Partridge Christmas Series Book 1) by Patricia Kiyono

Phillip Peartree, Duke of Bartlett, dreamed of a peaceful life with a suitable mate until a hunting accident left him scarred and nearly deaf. Resigned to spending the rest of his days alone, Phillip has devoted himself to rebuilding his family estate. But a chance encounter with a lovely young woman in a dusty bookstore rekindles his almost-forgotten hopes and dreams. Lady Amelia Partridge has no time for the frivolity of the London social scene. In addition to her work with the Ladies Literary Society, she has a mission — educating poor children in the city. She also has a secret life, one she fears might drive away the young duke who has become increasingly important to her.