Joanna Grayson is the eldest living member of the Grayson clan. She was the last generation to live in Grayson Hall, being the daughter of Daniel's nephew, Peter.

Joanna never married. Her great love was Gabriel de Redvers, the son of Ambrose.

She is a patron of the fine arts, Before her retirement, she was one of the top editors in London. She is highly intelligent and not easily convinced, but she has a huge heart. Joanna is much younger in mind and spirit than she is in body.

Joanna plays a pivotal role in Book One, although in that volume and in Volume Two, she has no speaking lines.

Joanna has stories to tell in Volume Three, Living Timekeepers.