Downton Abbey · A Viewer's Companion
Three daughters, no sons — and a stranger from Manchester set to inherit everything.
Downton's whole engine is a legal trap called the entail: the house, the title, and even Cora's American fortune must pass to the nearest male heir — and Lord Grantham only has daughters. This chart untangles who that heir is, who married in, and which granddaughter is secretly whose. Claret borders are Crawley blood, bottle green means married in — and the servants get their own strip below, because downstairs is a family too, just not this one.
Why the tree matters: one legal document runs the whole show
Nearly every scheme, marriage, and quarrel upstairs traces back to these five facts.
Why the daughters can't inherit
Downton, the earldom, and Cora's American millions are legally welded together by an entail: everything must pass intact to the nearest male heir. Daughters don't count. Robert spends the first episodes trying to break it and can't — so the only way for Mary to keep her home is to marry the man who's taking it from her.
Who on earth is Matthew?
The show opens with the Titanic sinking — drowning Robert's heir and the heir's son, Mary's fiancé Patrick. The entail then rolls to the next male Crawley alive: Matthew, a third cousin once removed — a middle-class lawyer from Manchester nobody upstairs has ever met. He arrives with his mother Isobel, scandalizes everyone by having a job, and slowly, maddeningly, falls for Mary. THE central confusion, resolved: he's family by blood, distant enough to marry her.
Three sisters, three fates
Mary marries the heir, is widowed the day their son is born, and remarries in S6. Sybil, the kindest, runs off with the chauffeur and dies in childbirth in S3 — the show's most devastating hour. Edith, perpetually unlucky — jilted at the altar, lover vanished in Germany — ends the series a Marchioness, outranking the whole family.
Why Branson eats upstairs
Tom Branson arrives as the family's Irish chauffeur and a fire-breathing socialist, elopes with Lady Sybil, and is grudgingly accepted. After Sybil dies he stays — raising Sybbie at Downton and running the estate with Mary. The revolutionary becomes the glue between upstairs and downstairs, which is the show's whole thesis in one man.
Marigold, the “ward”
Edith's editor Michael Gregson fathers her child, then disappears (and dies) in Germany before they can marry. Edith hides the pregnancy, places baby Marigold with a local farm family, then can't bear it — and brings her to Downton as an orphaned “ward”. Violet and Cora quietly figure it out; Mary weaponizes it in S6. That's the dashed line on the chart.
The other family in the house
The servants aren't Crawleys, so they get their own strip below — but they mirror the family upstairs: Carson and Mrs Hughes marry in S6, Anna and Mr Bates marry in S2 and survive two murder trials between them. Carson regards the Crawleys as his family — especially Mary, whom he half-raised.
The name decoder
Everyone has a name, a title, and a form of address — and the show uses all three interchangeably. Keep these apart:
Crawley vs. Crawley
Two households, one surname. Robert's family are the Crawleys of Downton Abbey; Matthew and Isobel are the middle-class Crawleys from Manchester — distant cousins who'd never met them before episode 2.
Lord Grantham vs. Mr Crawley
Lord Grantham = Robert (the earldom's name, not his surname). Mr Crawley = Matthew — as heir he's still a commoner. The daughters are Lady Mary/Edith/Sybil because their father is an earl.
Mary's three men
Mr Pamuk — the Turkish diplomat who dies in her bed in S1, the scandal that shadows her for years. Matthew — the heir, her great love, killed in S3. Henry Talbot — the racing driver she marries in S6.
Edith's three men
Sir Anthony Strallan jilts her at the altar (S3). Michael Gregson, her editor and Marigold's father, vanishes in Germany. Bertie Pelham unexpectedly inherits a marquessate and marries her in the finale.
Sybil vs. Sybbie
Lady Sybil is the youngest daughter, who dies in S3 giving birth to a girl — promptly named Sybbie after her. When someone says “Sybil” after S3, they usually mean the child.
Thomas vs. Tom
Thomas Barrow is the scheming footman-turned-butler downstairs. Tom Branson is the chauffeur who married into the family. Both get called by first name; only one of them eats upstairs.
Granny vs. Grandmama
Two formidable grandmothers: Violet, the English Dowager Countess (Maggie Smith), and Martha Levinson, Cora's brash American mother (Shirley MacLaine), who breezes in for weddings to torment her.
The two dead Patricks
Patrick Crawley, Mary's fiancé and the original heir, drowns on the Titanic before episode 1. In S2 a burned Canadian soldier claims to be Patrick — the family never learns the truth, and neither do we.
Downstairs — not blood, but family all the same
The staff run on their own hierarchy: butler and housekeeper at the top, footmen and kitchen maids below. These are the eight you must know.
Mr Carson
The butler — standards carved from granite. Adores Lady Mary like a daughter, and marries Mrs Hughes in S6.
Mrs Hughes
The housekeeper — the staff's steady moral center (“Mrs” is a courtesy title). Becomes Mrs Carson in S6.
Mr Bates
Robert's valet and old war comrade. Limps, keeps secrets, and is twice suspected of murder — first his wife's, then Mr Green's.
Anna Bates
Mary's lady's maid and confidante — she hid the Pamuk affair. Marries Bates in S2; survives the show's darkest storyline in S4.
Thomas Barrow
Scheming footman, secretly gay in an era that criminalizes it. Softens across six seasons — and ends the series as butler.
Mrs Patmore
The cook — shouting, warm-hearted tyrant of the kitchen. Nearly loses her sight in S1; mother figure to Daisy.
Daisy
Kitchen maid turned assistant cook. Marries the footman William on his deathbed in S2, and inherits a father-in-law she comes to love.
Miss O'Brien
Cora's poisonous lady's maid and Thomas's plotting partner. The bar of soap she leaves by Cora's bath (S1) costs Cora an unborn son. Leaves after S3.
Scope: all six seasons of the ITV/PBS series (1912–1925), through the Christmas Day finale — the three follow-up films are not covered here. † marks deaths within the series: Lady Sybil (childbirth, S3), Matthew (car crash, S3 finale), and offscreen, Michael Gregson (killed in Munich) — plus Mr Pamuk, Patrick Crawley, William Mason, and Vera Bates, who are named in the decoder above. Portraits are stills from the Downton Abbey wiki, cropped and self-hosted so the page loads with no external requests.