The Viking maritime expansion from Scandinavia (Denmark, Norway, and Sweden) marks one of the swiftest and most far-flung cultural transformations in global history. During this time (c. 750 to 1050 CE), Viking sailors reached Greenland, North America, and large parts of western Eurasia, and left a legacy that persists today. To understand the genetic structure and influence of the Viking expansion, we sequenced the genomes of 442 ancient humans from across Europe and Greenland ranging from the Bronze Age (c. 2400 BCE) to the early Modern period (c. 1600 CE), with particular emphasis on the Viking Age. We find that the period preceding the Viking Age was accompanied by foreign gene flow into Scandinavia from the south and east: spreading from Denmark and eastern Sweden to the rest of Scandinavia. Despite the close linguistic similarities of modern Scandinavian languages, we observe genetic structure within Scandinavia, suggesting that regional population differences were already present 1,000 years ago. We find evidence for a majority of Danish Viking presence in England, Swedish Viking presence in the Baltic, and Norwegian Viking presence in Ireland, Iceland, and Greenland. Additionally, we see substantial foreign European ancestry entering Scandinavia during the Viking Age. We also find that several of the members of the only archaeologically well-attested Viking expedition were close family members. By comparing Viking Scandinavian genomes with present-day Scandinavian genomes, we find that pigmentation-associated loci have undergone strong population differentiation during the last millennia. Finally, we are able to trace the allele frequency dynamics of positively selected loci with unprecedented detail, including the lactase persistence allele and various alleles associated with the immune response. We conclude that the Viking diaspora was characterized by substantial foreign engagement: distinct Viking populations influenced the genomic makeup of different regions of Europe, while Scandinavia also experienced increased contact with the rest of the continent.

87 The Viking maritime expansion from Scandinavia (Denmark, Norway, and Sweden) marks one 88 of the swiftest and most far-flung cultural transformations in global history. During this time 89 (c. 750 to 1050 CE), the Vikings reached most of western Eurasia, Greenland, and North 90 America, and left a cultural legacy that persists till today. To understand the genetic structure 91 and influence of the Viking expansion, we sequenced the genomes of 442 ancient humans from 92 across Europe and Greenland ranging from the Bronze Age (c. 2400 BC) to the early Modern 93 period (c. 1600 CE), with particular emphasis on the Viking Age. We find that the period 94 preceding the Viking Age was accompanied by foreign gene flow into Scandinavia from the 95 south and east: spreading from Denmark and eastern Sweden to the rest of Scandinavia. 96Despite the close linguistic similarities of modern Scandinavian languages, we observe genetic 97 structure within Scandinavia, suggesting that regional population differences were already 98 present 1,000 years ago. We find evidence for a majority of Danish Viking presence in England, 99 Swedish Viking presence in the Baltic, and Norwegian Viking presence in Ireland, Iceland, and 100Greenland. Additionally, we see substantial foreign European ancestry entering Scandinavia 101 during the Viking Age. We also find that several of the members of the only archaeologically 102 well-attested Viking expedition were close family members. By comparing Viking Scandinavian 103 genomes with present-day Scandinavian genomes, we find that pigmentation-associated loci 104 have undergone strong population differentiation during the last millennia. Finally, we are able 105 to trace the allele frequency dynamics of positively selected loci with unprecedented detail, 106 including the lactase persistence allele and various alleles associated with the immune response. 107We conclude that the Viking diaspora was characterized by substantial foreign engagement: 108 distinct Viking populations influenced the genomic makeup of different regions of Europe, 109 while Scandinavia also experienced increased contact with the rest of the continent. 110 111

No abstract

By the end of the 10th century, the area of Opatów and Sandomierz was probably inhabited by a small tribe whose name has not been recorded in written sources. The establishment of a gord in Zawichost Podgórze before the end of the 9th century coupled with the emergence of a local cluster of pyre kurgan grave fields may be evidence of the arrival of new settlers from an area east of the Vistula. Inclusion of the Sandomierz area into the domain of the Wielkopolska Polans in the late 10th century resulted in disappearance of the existing tribal settlement structures which were replaced by new ones. This was related to the arrival to this area of individuals and groups representing the new Piast dynasty rule who came from other parts of the country or even from abroad. They included warriors from the ducal team, craftsmen, merchants as well as settlers relocated voluntarily or by force, possibly captives. As they represented different cultural traditions, their appearance has been well documented in archaeological sources. It also seems to be confirmed in toponymy. On top of the biggest number of Wielkopolska newcomers from the heart of the Piast dynasty domain, in the vicinity of Sandomierz and Opatów there could have also operated merchants related to the broadly defined Scandinavian and Russian culture as well as nomadic tribes, most probably Hungarians. The latter could have arrived as warriors, members of the ducal team, merchants or captives.

In 2005, rescue excavations were carried out at site 22 (discovered a year earlier) in Głazów. Their aim was to record and explore the features visible in the high balk. Two of the examined features were the remains of smoking chambers (pits), and the third pit could be of an utility function. Based on the pottery sherds found inside, these features should be dated between the beginning of the 9th and the end of the 10th century. However, in the arable layer of the ground and on the surface of the site, there were mainly fragments of ceramics determined to the 12th – 13th centuries. This dating indicates the two-phase settlement of the early medieval site 22 in Głazów: the first phase – 9th – 10th (or the beginning of the 11th century); the second phase – 12th – 13th centuries. The village Głazów, which exists today, is a direct continuation of the settlement of the second phase.