I’ve always loved how myths fold into modern stories, and the 'sword maiden' vibe feels like a collage of a dozen older legends stitched together. To me, the trope isn’t usually a single historical person but a pattern: warrior women who stand at thresholds — in battle, at courts, or between worlds. Think of the Norse Valkyries choosing the slain, the Irish warrior-sorceress Scáthach who trains champions, or the Japanese onna-bugeisha like Tomoe Gozen; they all feed into that image of a woman whose identity is tied to a blade and a kind of sacred duty. Those figures were often tangled with divinity, prophecy, or exceptional social roles rather than being everyday people.
On the flip side, there are very clear historical and literary precedents that inspired later storytellers. The story collected as 'The Ballad of Mulan' shows disguise and martial heroism;
Joan of Arc — while a later, very different figure — gives the idea of a young woman who claims divine guidance to lead armies. Celtic tales like those in 'The Mabinogion' and epics such as 'Táin Bó Cúailnge' include fierce women who are not mere background, and Greek myths offer Athena and the Amazon motif. Modern creators pull from this buffet, remixing elements into characters who are sometimes mystical, sometimes pragmatic warriors.
So when I see a sword maiden in a game or novel, I read her as part of a long lineage: a mirror to past myths and a canvas for present values. Whether she’s more goddess, folk heroine, or tragic figure depends on the story, and I love that flexibility — it keeps the trope fresh and meaningful to each new generation.