text: **Fig. 4 | Ancestry in the Viking world. a**, Map showing ancestry carried by 
  Scandinavian Viking Age individuals as inferred using the best-fitting qpAdm 
  model. These are chosen by either choosing the one-source model with largest 
  *P*value and*P*> 0.01 or the two-source model with the largest*P*value and*P*> 0.01. 
  Extended Data Fig. 7 shows the same map with all accepted models.**b**, Stable 
  isotope data indicating the geology of childhood origin. The histogram shows 
  the ratio of strontium isotopes 87 to 86 measured in 109 individuals in Öland69. 
  For individuals included in our ancestry modelling, we plot Iron Age central 
  European-related ancestry against their stable isotope values (grey circles, 
  *r*= −0.39,*P*= 0.075). Shared area corresponds to the 95% confidence band  around the regression line.**c**, The ancestry shift observed in Viking Age Danish 
  groups using qpAdm on all SNPs or Twigstats. We show the best one-source and 
  all two-source models with*P*> 0.05. For models with*P*< 0.05, the −log10[*P*value] 
  is shown under the plot. Sample sizes for each group are shown in brackets. 
  **d**, The ancestry proportion across Viking Age individuals in Denmark, Sweden 
  and Norway grouped by latitude.**e**, Viking Age genetic variation (grey circles) 
  visualized on the same MDS as in Fig. 2a,b.**f**, The best-fitting qpAdm ancestry 
  model for far-flung Viking individuals. Detailed models for all individuals are 
  shown in Extended Data Figs. 9 and 10. In**c**and**f**, we show one s.e. Rotating 
  qpAdm sources are marked in bold in the key. 