The Wings of Memory — Eleanor Farnes

A night of heavy snow, and dogs barking outside an old Cotswold farmhouse.... When Nancy and her two sisters went out to see what was the matter, they found a handsome stranger unconscious in a snowdrift. They and their parents saved his life; but when he recovered consciousness, he could not remember anything about himself. He stayed on to get work on a neighboring estate -- and so began a warm and tender love-story.