Summary of Philippa Gregory's Three Sisters, Three Queens is a novel that follows more than 30 years in the life of Margaret Tudor. Starting in 1501, when she’s 11 years old, the story traces Margaret’s movements between England and Scotland, where she struggles to maintain her grip on power after the death of her husband, the king. Through moments of triumph and sorrow, she maintains an impassioned correspondence with Mary and Katherine, her sister and sister-in-law, whom she holds in her heart with equal parts fondness and spite.
In London at the turn of the sixteenth century, Margaret meets Katherine of Aragon, the Spanish princess who is to marry her older brother Arthur. Margaret is not as taken with Katherine as her young siblings, Mary and Henry, who sometimes goes by Harry. Still, there’s something about this poised young woman that Margaret admires. Mentally, Margaret compares herself to Katherine…
