The Squirrel Wife is the title of a children's fairy tale written by Philippa Pearce and first illustrated by Derek Collard.
Jack, a young swineherd, hears cries for help from amidst the storm ravaged trees.
In reward for saving the life of a little green man that he finds trapped underneath a fallen tree, Jack is given a magic golden ring.
The only place for their life together as man and wife is in the forest where Jack builds their house and learns all there is to know about living in amidst the trees.
However, it is not long before Jack's elder brother hears rumor of his young sibling's success and sets about bringing his good fortune to an end.