A Female Viking Warrior Interred at Birka

In archaeology, we distinguish osteological sex from artefact gender. Osteo-sex is with very few exceptions (odd chromosomal setups) the same thing as what your genitals are like. Artefact gender is the material correlate of a role you play according to the conventions of your time: e.g. whether you keep your genitals in Y-fronts or lacy knickers. We judge these two parameters from separate source materials. Your skeleton can’t tell us anything about your gender, and your grave goods can’t tell us anything about your osteo-sex. They are in principle able to vary independently.

Nevertheless, 1st millennium Scandinavians seem to have been quite conventional about this: mismatches between osteo-sex and artefact gender are extremely rare. The graves are clearly divided into osteo-female jewellery graves and osteo-male weapon graves. If you exclude cremated bones and poorly preserved inhumations that can cause misdeterminations, the number of mismatches shrinks even more. And when you do see a mismatch it’s typically partial: e.g. a male skeleton buried with a full set of weaponry and horse gear, plus a single ladylike brooch. I was until recently not aware of any well-preserved and richly furnished Scandy inhumation of the 1st millennium with a complete mismatch between osteo-sex and artefact gender. But now we have one.

Birka’s grave 581 is one of the famous chamber inhumation graves where this Swedish Viking town’s 10th century elite buried their dead. It has loads of high-quality weaponry and two horses. It has no hint of any female attire. And it has the skeleton of a person whose funny bent position suggests that, like in many other chamber graves, the individual was buried sitting on a chair and then keeled over inside the chamber.

In the 1970s, the skeleton had become disassociated from the artefact finds, and an osteologist (sadly uncredited in the paper discussed below) quietly identified it as female. In 2014 osteologist Anna Kjellström identified the bones as belonging to Bj 581, the famous weapon burial, and agreed that the skeleton is female. Certain archaeologists have replied that they don’t believe this because of the weapons. Others have suggested more diplomatically that maybe the bones represent two individuals, or that a male body was removed while still articulated. Others again have simply dismissed the whole issue with reference to 19th century sloppiness in keeping the Birka bones correctly labelled grave by grave.

Now a team of researchers, of whom I am proud to count half as my professional buddies, have sequenced the genomes of the bones. Yes, plural. To test if the skull and one arm are from the same person. There is only one person there, and just as Kjellström said, she’s biologically a woman. I am extremely happy with this investigation, because it gives us our first real female Viking, and it shows that osteologists can indeed judge osteo-sex correctly on well-preserved ancient skeletons. Very commendably, the paper is available online in full for free: Open Access.

Here’s a few notes.

The “Discussion” section hasn’t been properly copy-edited.

Hedenstierna-Jonson, Charlotte et al. 2017. A female Viking warrior confirmed by genomics. American Journal of Physical Anthropology 2017. DOI: 10.1002/ajpa.23308

I discussed the issue of shield maidens in 2013, the year before Anna Kjellström went public with her identification of the female skeleton with Bj 581.