The Tudors · A Viewer's Companion
The problem with Henry VIII's court isn't the family tree — it's the turnover. Queens arrive numbered and leave beheaded, ministers rise and fall like tides, and half the men are named Thomas. This chart keeps it straight: crimson borders are Tudor blood, gold borders are the six queens — each with a numbered badge and her fate — and steel borders are the men of the court who ran the country until it killed them.
Every divorce, execution, and religious earthquake in this show traces back to the marriage rail above.
The old schoolroom rhyme is the show's actual plot, in order. m.1 Catherine of Aragon — divorced (and soon dead). m.2 Anne Boleyn — beheaded. m.3 Jane Seymour — died. m.4 Anne of Cleves — divorced. m.5 Catherine Howard — beheaded. m.6 Catherine Parr — survived. The numbered badges on the chart follow the rhyme exactly.
Catherine of Aragon gave Henry a daughter but no living son, and the Pope refused to annul the marriage. So Henry made himself Supreme Head of the Church of England and annulled it himself. That single decision powers seasons 1–3: it destroys Wolsey (who couldn't deliver the annulment), kills Thomas More (who wouldn't endorse it), and hands Cromwell the country to remake.
Each child sits under a different queen: Mary under Catherine of Aragon, Elizabeth under Anne Boleyn, Edward under Jane Seymour. The succession order is the reverse of their ages: Edward first (the boy), then Mary, then Elizabeth. The series ends with Henry still on the throne — but history has all three of these children wear the crown in exactly that order.
Thomas Boleyn steered first Mary (mistress), then Anne (queen) into Henry's orbit, and the family harvested titles for it. When Anne failed to produce a son, the fall was total: Anne and her brother George were executed in the same week of season 2 on charges cooked up by Cromwell, and Thomas slunk home to die in disgrace.
Charles Brandon (Henry Cavill) is the king's jousting partner, fellow womanizer, and conscience-of-last-resort. The show marries him to Princess Margaret, Henry's sister — a composite character: the real Brandon married Henry's other sister, Mary Rose, and the writers merged the two women into one. Margaret dies in season 1; Brandon serves on until the series' final hour.
Tudor England had about five first names to go around. Keep these apart:
Catherine of Aragon = m.1, the Spanish first wife. Catherine Howard = m.5, the teenager who loses her head in season 4. Catherine Parr = m.6, the widow who outlives Henry. Three Catherines, three completely different fates.
Anne Boleyn = m.2, beheaded in the season 2 finale. Anne of Cleves = m.4, the German bride Henry rejected on sight — she agreed to the divorce, kept her head, and stayed at court as "the King's Beloved Sister." The best exit anyone manages.
Thomas More = the saintly chancellor (Jeremy Northam). Thomas Cromwell = the ruthless fixer (James Frain). Thomas Boleyn = Anne's scheming father. Thomas Cranmer = the archbishop. Thomas Culpepper = Catherine Howard's lover. Thomas Tallis = just a musician. Six Thomases; only Cranmer and Tallis die of natural causes.
Mary Tudor = Henry's daughter by Catherine of Aragon (Sarah Bolger), the future Mary I. Mary Boleyn = Anne's sister, Henry's mistress before Anne. One is a princess; the other is why the Anne courtship was scandalous even before Rome got involved.
Not a mix-up in the family — a recast: Anita Briem plays Jane at the end of season 2, Annabelle Wallis in season 3. Same queen, same fate: she delivers the longed-for son and dies days later. (And no relation to the actress Jane Seymour.)
Edward Tudor = the baby prince, heir to everything. Edward Seymour = Jane's ambitious brother, the prince's uncle, waiting in the wings to run the boy's regency.
The show's Princess Margaret merges Henry's two real sisters (Margaret and Mary Rose). She's shipped off to marry the aged King of Portugal, smothers him with a pillow, and secretly weds Brandon on the way home. Historically the elderly king was French and died on his own — but the pillow makes better television.
Bessie Blount never gets a number — mistresses don't. But her son Henry Fitzroy is the proof Henry clings to that he can father a boy, which is exactly why he blames each wife when no son comes.

Archbishop of Canterbury — annuls whatever marriage the king needs annulled, and quietly survives everyone who promoted him.

The Emperor's ambassador — Catherine of Aragon and Mary's tireless advocate, and the court's sharpest pair of eyes for all four seasons.

Groom of the king's privy chamber — and Catherine Howard's lover. The affair costs him his head, and hers, in season 4.

Jane's brother, Earl of Hertford — rises with his sister's marriage and positions himself to rule England through his nephew, the future boy king.

Thomas Howard — uncle to both beheaded queens, Anne Boleyn and Catherine Howard. A season 1 schemer the show quietly retires afterward.
Scope: all four seasons of the Showtime series (2007–2010) — which is to say, Henry's reign only. The show ends with the king still on his throne, before Edward, Mary, or Elizabeth ever rule; their reigns are history's epilogue, not the series'. Portraits are stills from the Tudors wiki, cropped and served from this site so nothing hotlinks an external host. A † marks characters dead before the final credits.