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.
The maps illustrates the impact of the “Örträsk Finns” on the interior of Västerbotten by three maps showing how their descendants spread. It is based on the database Kråken (http://www.xn--krken-nra.se/kr%C3%A5ken/) which is not compleatly finished for all of Västerbotten but it can anyway give a rough picture of how they spread over the land. For illustration three of the founding fathers are used namely:
Johan Philipsson Hilduinen ca 1620-1697 Mårten Hindersson ca 1625-1697 Erik ca 1640 only known from his two sons Erik and Håkan The first map shows the proportion of the persons born 1890-1930 who descend from them.
I made a map of the YFull kits with province listed for the Scandinavian countries and Finland with the basic idear that one kit should be one point. Mainly as an experimental alternative to other maps for showing the geographical distributions of the haplogroups. To avoid over plotting each point searches for a free space to be plotted and can also adjust size to squese in. This causes the ball shapes in especially Finland as most points are located to province landmass centroides.
Here is a more detailed view of the North Swedish subbranch Q-Y45428 of Q-L804. All nine boxes at the bottom are kits tested at ftDNA and verified by “paper research”. Of the nine kits, eight can be followed to Erik, the father of Erik Ersson (6 kits) and Håkan Ersson (2 kits). Erik has made a big contribution to the population of Västerbotten and probably most people in the region can find him on their pedigree.
(English summary: Link to a paper showing that the Rh-negative blood type stod for a big part of stillbirths and infant mortality clustering within families in Skellefteå.)
När jag har släktforskat på Skellefteå släkter har jag märkt att det verkar som att det vilar en förbannelse över vissa familjer genom att en stor del av deras barn var dödfödda eller dog strax efter födseln. Skellefteå har även en mycket stor andel som har blodgrupp Rh-negativ.
This is the current status of the family tree of Q-L527 based on the data at YFull (Updated 2019-01-04). Branch length in years I have estimated with the Ape package in R using maximum likelihood and the “strikt model”. The idea is to calculate the most likely branch length given the number of SNPs on each segment. The rightmost codes refer to actuall test persons (YFxxxxx). Notice that this way of dating puts less weight on the Belarus sample compared to Yfulls estimate, pushing the origin of Q-L527 back in time.
This is my link back to the big Sursill, Arctophilacius and Calamnius family. The link is not yet confirmed by DNA as there are two conflicting DNA tests of the paternal lines from Petrus Arctophilacius at present.
See more about this family at:
Some of Mikael Mikaelssons (Mickel Mickels’n, Gamm-Mickel) decendents that remaind in the area. He had 29 children in 2 marriages. Rapid increase in decendants and a lot of inbreeding in the following generations. Mikael Mikaelssons farfarsfar (Great grandfather) was Erik Ersson.
In the Skellefteå region in northern Sweden, cousin marriages were common. In 1750 the national prevalence of marriages between first cousins was estimated at 0.2% while in Skellefteå it was 0.34%. In early 19th century the national prevalence was 1% …