Of the clutch of female powerbrokers who emerged during the civil wars of the English 15th century, the diminutive figure of Margaret Beaufort stands out: first, for her spectacular navigation of the repeated regime changes of the Wars of the Roses; and second, for the act of political opportunism which saw her help her son Henry Tudor to the throne, in the process founding a new dynasty. She herself became the epitome of a dynastic matriarch, a pious, self-assertive figure of immense independent wealth and power.
Margaret was born in 1443 into a great Lancastrian family. Like the ruling king Henry VI, the Beauforts could also trace their lineage back to John of Gaunt — but their descent, through Gaunt’s mistress, meant they were bastards, banned from ever claiming the throne in their own right.