The Tudor dynasty ruled England for 118 years, yet their grip on power was never secure. Behind every coronation lurked cousins with bloodlines stretching back to Edward III, each carrying claims that could topple a throne. While Henry VIII and Elizabeth I command history’s spotlight, other family members possessed royal blood potent enough to reshape England’s story. Some died on scaffolds, others in exile, and a few lived as prisoners in their own country. These forgotten claimants reveal how the Tudors survived not just through political skill, but by systematically crushing anyone who dared share their heritage.
The Poles: The Last Plantagenets
Margaret Pole carried the most dangerous blood in England. As daughter of George, Duke of Clarence – Edward IV’s brother – she descended directly from the Plantagenet kings who ruled before the Tudors seized power at Bosworth Field. Her royal lineage made every breath a political act.
Her son Reginald Pole became a cardinal and Henry VIII’s most articulate critic, writing treatises that condemned the king’s break with Rome. When Henry declared himself Supreme Head of the English Church, Reginald branded him a schismatic tyrant from the safety of continental Europe. Another son, Henry Pole, Lord Montagu, remained in England where his Plantagenet heritage marked him as a perpetual threat.
Henry VIII understood dynastic mathematics. The Poles’ claim predated his own, and Catholic Europe viewed them as England’s rightful rulers. In 1538, the king struck. He executed Henry Pole for treason a few months later in early 1539: his crime was existing with royal blood. Three years later, Margaret Pole, now sixty-seven and the last of the Plantagenets, followed her son to the block. The executioner botched the job, hacking at her neck and shoulders before finally severing her head.
Reginald survived in exile, returning as Archbishop of Canterbury under Mary I to restore Catholicism. He died twelve hours after Elizabeth I’s accession, his life’s mission collapsing with the Protestant settlement.
The Courtenays: Devon’s Doomed Earl
Edward Courtenay inherited a claim through his mother, Gertrude Blount, whose grandmother was Katherine of York, Edward IV’s daughter. This genealogical thread connected him to the crown through the House of York, making him valuable to those who questioned Tudor legitimacy.
Henry VIII imprisoned Courtenay in the Tower of London for fifteen years (from childhood to adulthood) simply because his bloodline posed theoretical danger. Released when Mary I took the throne in 1553, Courtenay briefly emerged as a potential husband for the new Catholic queen. His Protestant education under Henry VIII, however, made him seem unsuitable for Mary’s mission to restore papal authority.
The young earl’s freedom lasted three years. Implicated in Wyatt’s Rebellion against Mary’s marriage to Philip II of Spain, Courtenay fled to exile in Padua, where he died of fever at twenty-nine. His claim died with him, another bloodline extinguished by Tudor paranoia and political miscalculation.
The Greys: Nine Days and a Lifetime of Consequences
Lady Jane Grey’s nine-day reign in July 1553 represented the closest any Tudor cousin came to permanent power. Her grandmother, Mary Tudor (Henry VIII’s sister), had married Charles Brandon, Duke of Suffolk, creating a line through their daughters with unquestionable royal heritage. Jane descended from Henry VII through this connection, placing her firmly within succession debates.
John Dudley, Duke of Northumberland, orchestrated Jane’s brief queenship to maintain Protestant rule after Edward VI’s death. The plan collapsed when England rallied behind Mary I’s superior claim as Henry VIII’s daughter. Jane paid with her head in February 1554, age sixteen.
Her sisters Katherine and Mary Grey carried the same dangerous bloodline. Katherine secretly married Edward Seymour, Earl of Hertford, producing sons who might claim the throne. Elizabeth I imprisoned Katherine for this unauthorized marriage – royal blood required royal permission to reproduce. Katherine died in captivity, never seeing freedom again.
Mary Grey (the youngest, and some say she may have been born with dwarfism) seemed less threatening until she too married without permission. Her punishment was gentler than Katherine’s, but the message remained clear: Tudor cousins existed at the crown’s pleasure, their lives forfeit to dynastic security.
The Stuarts: Northern Claims and Ultimate Victory
Margaret Tudor’s marriage to James IV of Scotland created the bloodline that would ultimately inherit England. Their great-granddaughter, Mary Queen of Scots, possessed the strongest claim to succeed Elizabeth I – closer than any English cousin through proximity to Henry VII.
Mary’s Catholic faith and French upbringing made her unacceptable to Protestant England, but her hereditary right was perceived as unassailable. Elizabeth kept Mary under house arrest for nineteen years before executing her in 1587, yet this only transferred the claim to Mary’s son, James VI of Scotland.
James had learned patience from his mother’s fate. He cultivated Protestant credentials, corresponded diplomatically with Elizabeth, and waited. When the last Tudor died childless in 1603, James inherited both English and Scottish crowns, finally uniting the kingdoms his great-grandmother had connected through marriage.
The Stuart succession proved that Tudor cousins’ claims were never empty threats: they were prophecies waiting for the right moment to fulfill themselves.
The Suffolks and Forgotten Bloodlines
Henry Brandon, Duke of Suffolk, represented another path English history might have taken. Son of Mary Tudor, Queen of France, and Charles Brandon, he carried royal blood through Henry VIII’s sister. His early death in 1551 ended speculation about his potential claim, but his existence reminded contemporaries how many Tudor relatives possessed theoretical rights to rule.
Earlier in the dynasty, the De la Pole family had threatened Henry VII’s shaky grip on power. Edmund de la Pole, Earl of Suffolk, fled England in 1501 rather than accept Tudor rule, claiming the throne through his Yorkist heritage. His brother Richard remained at large until dying at the Battle of Pavia in 1525, the last active Yorkist claimant.
These forgotten names show how weak the early Tudor rule truly was. Henry VII spent his reign eliminating rivals, while Henry VIII continued the work with methodical brutality.
The Price of Royal Blood
The Tudors survived by transforming family reunions into execution lists. They understood that royal blood was both blessing and curse – it legitimized their rule while providing ammunition for their enemies. Every cousin represented a potential rallying point for dissent, every bloodline a possible foundation for rebellion.
Tudor history might have unfolded differently if Margaret Pole had found more support, if Edward Courtenay had lived longer, or if Lady Jane Grey’s coup had succeeded. Instead, the dynasty’s paranoid efficiency eliminated most alternatives, leaving only the Scottish Stuarts to inherit when Elizabeth’s childlessness ended the Tudor line.
The Tudor cousins’ stories reveal monarchy’s fundamental contradiction: the same bloodline that grants legitimacy also multiplies threats. In the end, the family that won at Bosworth Field survived by ensuring their relatives never got another chance to play the game.
Which of these forgotten claimants would you have backed? Sometimes the most interesting chapters in history are the ones that were never written.
Heather Teysko is the creator, writer, and producer of The Renaissance English History Podcast,  the original Tudor history podcast, started in 2009. She's been writing about history online for over 25 years, since her first site on Colonial American history became number one in history on Yahoo in 1998. In 2019 she created Tudorcon, which is now a yearly event, in addition to writing books, and running TudorFair.com - a whimsical Tudor Merch shop.
She has been passionate about Tudor England since she first read Alison Weir's The Six Wives of Henry VIII 30 years ago, and subsequently moved to London after college to spend her time immersed in Tudor history (how exciting when she got to interview Alison for the first time!). In addition to history, she is passionate about travel, and has lived in 3 countries and 4 states (not counting her perpetual state of confusion), and her family (who help her host her YouTube channel occasionally).
