Wales, 1118. In a world of war and ambition, love may prove the most dangerous force of all.

King Gruffydd ap Cynan has spent a lifetime winning and defending Gwynedd. But while enemies gather beyond his borders, the gravest threats come from the hearts of those closest to him.

Gwenllian’s fierce devotion to her husband, the displaced Prince Griffith ap Rhys, threatens to draw the royal family into ruin. At the same time, Annest’s forbidden love for a married man awakens jealousy, bitterness, and vengeance that may destroy more than one life.

As battle closes in, Queen Angharad must stand firm while her children are pulled ever deeper into danger. Gruffydd’s sons are drawn into bitter rivalry, old hatreds stir, and the bonds of blood begin to fray. Then Richard, Earl of Chester, arrives without warning, placing everything the family has fought to preserve in sudden jeopardy.

Based on real people and events, Kinstrife is a sweeping historical novel of forbidden love, family conflict, vengeance, and survival in medieval Wales.