Infamous Swedish murderer Maria Romberg and three accomplices were beheaded in the city of Boras on this date in 1725.
Romberg (English Wikipedia entry | Swedish) was the daughter of a magistrate in that town and given in an arranged marriage to a merchant 27 years her senior. Anders Boberg was said to be an abusive drunk; it’s a sure bet that even at his best he had quite a bit less in common with his wife than did her childhood friend Haqvin Wijndruf. These two carried on a years-long affair heedless of appearances; when later implicated in murder, numerous servants and confidantes were availiable to paint the adulterers in scarlet, as did the 500-odd love letters that they had helped the pair shuttle back and forth.
By December 1724, Maria and Haqvin had been trying for going on two years to get rid of the sot. Once again evincing a mind-boggling want of discretion, they had enlisted two other outsiders into the plot: a maid named Karin Andersdotter, and a folk magician named Romans Ingeborg (who was initially hired to bewitch Haqvin to his death, but got to stay in the game even when her sorcery proved unequal to assassination).
Three days after Christmas, the three women in the conspiracy — Maria, Karin, and Romans — simply crept into Anders’s bedroom and battered him to death as he slept, afterwards positioning the body in an attempt to make it look like he had simply fallen near the fireplace and cracked open his head.
Forensic science wasn’t exactly CSI quality in the 1720s, but it was good enough to see through that story. The lovers and killers had not the wit or steel to throw up a veil of silence, and at the first cock of an inquisitorial eyebrow, they all started blabbing and pointing fingers.
According to this Swedish blogger, the site where they all lost their heads is a placid hill on a biking path near Lake Ramnasjön.