Eleanor of Provence, arriving in England at 12 to marry King Henry III, becomes linked with her sister-in-law Eleanor and Simon de Montfort amidst political turmoil.

Eleanor of Provence was born in the province of her name in 1223. She has come to England at the age of twelve to marry the king, Henry III. He's sixteen years older, but was a boy when he ascended the throne. He's a kind, sensitive sort whose only personal attachments to women so far have been to his three sisters.

The youngest of them is called Eleanor too. She was only nine when, for political reasons, her first marriage took place, but she's already a chaste twenty-year old widow when the new queen arrives in 1236. In a short time, this Eleanor will marry the rising star of her brother's court, a French parvenu named Simon de Montfort, thus wedding the fates of these four people together in an England about to undergo some of the most profound changes in its history.

It's a tale that covers three decades at its heart, with loyalty to family and principles at stake, in a land where foreigners are subject to intense scrutiny and jealousy. The relationship between these two sisters-in-law, close but ultimately doomed, will reflect not just the turbulence and tragedy of their times, but also the brilliance and splendour.