My Lady Jane, A King’s Will, and the Undue Influence on a Testamentary Instrument that Took England to the Brink of Civil War

Lady Jane Grey’s brief reign, known as the “Nine Days’ Queen,” stemmed from a contested succession crisis in 1553. Her ascent was orchestrated by John Dudley, Duke of Northumberland, who heavily influenced the dying King Edward VI to amend his Devise for the Succession. This document bypassed Edward’s Catholic half-sister Mary and named Jane Grey as heir to ensure Protestant continuity. Dudley’s efforts to secure Jane’s position, including her marriage to his son Guildford, have drawn comparisons to modern estate law disputes, particularly regarding undue influence and testator capacity. The scenario offers a striking parallel to contemporary legal principles surrounding will contests.

King Edward VI’s frailty, exacerbated by tuberculosis, made him highly susceptible to Dudley’s manipulations. Edward’s original Devise favored male heirs of the Grey family, but as his death loomed, it was hastily altered to name Jane Grey directly. Historical evidence suggests Dudley exploited Edward’s vulnerability and his role as Lord President of the Privy Council to secure his family’s power. Despite garnering some noble support for the amended Devise, its legitimacy was widely questioned, lacking popular and political backing. Jane’s reign was swiftly overthrown by Mary, who claimed the throne with broad public support, underscoring the fragility of Dudley’s plan.

Under modern undue influence laws, Dudley’s actions would likely face severe scrutiny. Edward’s weakened health and young age could classify him as a susceptible testator. Dudley’s proximity to the king, his personal motivations, and the dramatic amendments to the Devise all suggest undue influence. While Dudley’s manipulations momentarily succeeded in placing Jane on the throne, they ultimately resulted in his execution for treason and the rapid reinstatement of the Tudor succession under Mary I. The saga illustrates the timeless complexities of power, influence, and legal disputes over succession.

For more information see William M. Kelleher and Christina Smith “My Lady Jane, A King’s Will, and the Undue Influence on a Testamentary Instrument that Took England to the Brink of Civil War,” ABA Probate and Property Journal, Jan/Feb 2025.