Hans Ersson, 1655, illustrates the impact an individual can have on the genetic make up of a region. 25% of those born 1890-1930 in Sorsele had a strait paternal line to him according to the database Kråken. Quite extrem!
To see if there were more extrem cases I made a histogram of the number of “founding fathers” and their number of descendents in the database with a strait paternal line to them.
This is the percentages of sami in the parishes as reported by the ministers. What they reported is “Lapps” and maybe this term has been interpreted differently by different ministers. Maybe there is not a one to one correspondance of the term. White areas denotes missing information. The areas in Värmland, Dalarna, Västmanland and Gästrikland with sami population are wellknown and studied eg by Ingvar Svanberg and discussed at https://southsaamihistory.wordpress.com/. Other interesting areas on the map that stand out are:
View over a part of Örträsket and Mårdberget (English: Marten mountain, Local dialect: Malberget) from Västra Örträsk. Mårdberget has given name to Mårdbergets lappskatteland. There is supposed to be rock carvings on top of it but I did not find them now.
Below some maps over Mårdbergets lappskatteland from: “Lappskattelanden på Geddas karta : Umeå lappmark från 1671 till 1900-talets början” by Gudrun Norstedt which I highly recommend reading.