The discovery of the burials of four medieval knights near the Polish village of Cieple has highlighted the region's connections to Scandinavia during the reign of the first Polish kings. The warriors were found lying in richly adorned chamber tombs dating to the early eleventh century A.D., the time of Boleslaw I the Brave. They had been buried with a variety of weapons, including swords, spears, and daggers, as well as full sets of equestrian equipment, such as spurs, stirrups, bits, and buckles. Isotope and DNA analysis demonstrated, though, that these individuals were not locals, but instead likely immigrated from...