'Who hopes still constantly with patience shall obtain victory in their claim'Sometime heir to the English throne, courtier in danger of losing her head, spy-mistress and would-be architect of a united Catholic Britain: Lady Margaret Douglas is the Tudor whose life demands a wider telling.As niece to Henry VIII and half-sister to James V of Scotland, the beautiful and Catholic Margaret held a unique and precarious position in the English court. Throughout her life, she was to navigate treacherous waters: survival necessitated it. Yet Margaret was no passive pawn or bit-part player. As the Protestant Reformations unfolded across the British Isles and the Tudor monarchs struggled to produce heirs, she had ambitions of her own. She wanted to see her family ruling a united, Catholic Britain. When her niece Mary, Queen of Scots was left a widow, Margaret saw her chance. Through a thoroughly Machiavellian combination of timing, networking and family connections, she set in motion a chain of shattering events that would one day see her descendants succeed to the crowns of England, Ireland and Scotland.Morgan Ring has revived the story of Lady Margaret Douglas to vivid and captivating effect. From a richly detailed backdrop of political and religious turbulence Margaret emerges, full of resilience, grace and intelligence. Drawing on previously unexamined archival sources, So High a Blood presents a fascinating and authoritative portrait of a woman with the greatest of ambitions for her family, her faith and her countries.