What is the theme in The Favored Child by Philippa Gregory?

Love is a central theme in this book. Julia's love for her family and her land are an overriding theme found throughout the book. As a child, Julia knows every inch of the estate and can feel the heartbeat of the land and the seasons. She knows when each flower will begin to bloom and where to plant flowers in her own flower garden. She instinctively knows when it's time to plant and where, even though she's had no formal training on those subjects.