Alison Weir vs Philippa Gregory: Which Is More Historically Accurate and Which Plays Fast and Loose With the Facts?

Historical novels are my absolute favorite kind of book, and have been for as long as I can remember. There’s nothing quite like being pulled back into a bygone era and feeling, by the last page, that you’ve had a cracking good read and learned something in the bargain. 

The best writers manage both at once. They blend fact and fiction so cleverly that you close the cover knowing more than when you opened it. 

So when people ask me, Alison Weir vs Philippa Gregory, which one is more accurate, it’s an interesting question because they’re both great authors, and both conduct extensive research, but who is more historically accurate?

Where I Stand on Historical Fiction

I believe a novelist needs a license to tell a story. We can never know exactly what someone said across a dinner table in the 12th century, and nobody was hiding under the bed scribbling down the pillow talk. So a writer has to imagine the dialogue, the glances, the private fears. That’s the job, and the magic of it.

But, and this is the big but, I think you keep the facts you do have. You bring them to life rather than rewrite them. A love story can be heightened, a character’s inner world can be invented. The birth order of three real siblings, though? That I’d leave alone.

This is exactly where my two authors part ways. One stays inside that license, while the other, to my mind, climbs out of it when a better story is on offer.

Who Are Alison Weir and Philippa Gregory?

Both women are giants of the genre, and both come at it from a different starting point. That starting point explains a lot.

Alison Weir is widely considered the more historically accurate of the two. She’s a working historian who builds her novels on the surviving record and flags her inventions in author’s notes. 

Philippa Gregory tells a bolder, more dramatic story, and she sometimes invents motives, scenes, and even events that the evidence doesn’t support.

Alison Weir, the Historian Who Turned to Fiction

Alison Weir made her name in non-fiction first. She’s the top-selling female historian in the United Kingdom, with well over two million books sold, and she spent years writing biographies of the six wives of Henry VIII, Elizabeth I, and the medieval queens before she ever wrote a novel. 

Interestingly, she didn’t train at a big university. She came to history through teacher training college and once taught children with special needs. Her authority is built on decades of digging through the sources.

When she turned to fiction with books like Innocent Traitor and the Six Tudor Queens series, she carried that habit with her. The history comes first with her, and the story is fitted around it.

Philippa Gregory, the Novelist with a Historian’s Training

Philippa Gregory is the queen of British historical fiction. The Other Boleyn Girl arguably turned a whole generation onto the Tudors, which is fantastic. She holds a history degree from Sussex and a PhD from Edinburgh, she’s a Fellow of the Royal Historical Society, and she was awarded a CBE in 2021. The woman has done her homework.

The difference is what she does with it. Gregory has described her own books as a “gateway drug” to history, and I think that’s a lovely and honest way to put it. She wants to hook you. She’ll take a gap in the record and fill it with the most dramatic thing that could plausibly have happened, and sometimes with something that probably didn’t.

Alison Weir vs Philippa Gregory: The Key Difference

The real difference between them isn’t research, because both do their research. It’s more what they do when the record runs out.

Weir treats the gaps as something to step into carefully. She’s said herself that a novelist can get inside a character’s head in a way a historian never could, which is a real gift, but that the invented version must stay compatible with what we actually know. 

Gregory treats the gaps as an open invitation. If the evidence is silent, she’ll give you the boldest version going, and trust the author’s note to sort out fact from flourish afterward.

Where Philippa Gregory Bends the Facts

I love a good yarn, but a few of Gregory’s choices cross from imagination into invention.

The Boleyn Sisters’ Birth Order

In The Other Boleyn Girl, Anne is the older, scheming sister, and Mary is the sweet younger one. Most historians now believe it was the other way round, and that Mary was actually the elder of the two. 

Weir even wrote a whole biography making that case. It’s a small thing on the page, but it flips the entire dynamic of the novel, and it’s presented as fact.

The Incest Plotline

Gregory’s novel strongly implies that Anne slept with her brother George to conceive a son. Now, Anne and George were both charged with incest at their 1536 trial. But the overwhelming view among historians is that those charges were fabricated by Thomas Cromwell to bring Anne down, and there’s no evidence either of them ever contemplated such a thing.

Eric Ives, the great Anne Boleyn biographer, treats the accusation as part of a stitched-up case, not a real event. Gregory is fairly alone in entertaining it as something that might have happened, and a whole generation of readers came away thinking it was settled history. It wasn’t.

Witchcraft in The White Queen

Then there’s The White Queen, where Elizabeth Woodville and her mother, Jacquetta of Luxembourg, use actual spells and witchcraft to bend events to their will, and Elizabeth later curses whoever murdered her sons. 

There’s no evidence any of that happened, of course. It’s woven into the story as though the magic is real. The fate of those missing boys in the Tower is one of history’s greatest cold cases, and turning it into a curse is a bold move for a book that markets itself on authenticity.

To be fair to Gregory, she does include an author’s note in every book and a further-reading list, and she has never pretended she’s writing a textbook. The trouble, as the Tudor historian David Loades once put it, is that it would have been safer if she’d simply called it fiction, because that’s what she was doing. 

She markets a commitment to accuracy that historians don’t always recognize. That’s my whole quibble in a nutshell.

How Alison Weir Handles the Gaps

Weir invents, too, and I want to be clear about that, because it would be unfair to paint her as some dry recorder of dates. She isn’t. Her novels have feeling, pace, and a beating heart.

The difference is that she shows her working. 

In her novel about Anne of Cleves, for example, she gave Henry VIII’s fourth wife a storyline about a child born before her marriage. It’s invented. But she explains in her author’s note that she built it from Henry’s own recorded comments about Anne’s body, and she tells you plainly that she made it up. You’re never misled.

So, Which Should You Read?

Both. Truly. They do different jobs, and a good bookshelf has room for each.

Read Philippa Gregory when you want to be swept off your feet. She’s a wonderful storyteller, her court politics crackle, and if she’s the reason you fell down a Tudor rabbit hole in the first place, then she did exactly what she set out to do. 

Plenty of us came to this period through her and the TV adaptations of her books. Just don’t quote her in a history exam.

Read Alison Weir when you want to close the book and feel you can trust most of what you’ve read. She’s my favorite of the two, and now you know why.

The funny thing is, the real history rarely needs the embroidery. Anne Boleyn’s actual rise and fall, the vanished princes, Elizabeth of York holding a fractured dynasty together, all of it is stranger and sadder and more gripping than anything a novelist could dream up. The best writers know that. They light the facts up rather than paint over them.

And that, for me, is the whole art of it.

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