Y chromosomal DNA results: Ancestry and Family Tree DNA.
1. Ancestry
The results of the Ancestry Y-46 test arrived by email at February 1. A first comparison with the Ancestry database displayed most similarities with US(not shown) and UK members. In addition more distant relations appear in the South of Germany and Ireland (see map below).
However, data comparison appeared on a limited number of markers, while the number of DNA members may be relatively low. I therefore decided to manually compare the data using http://www.ysearch.org/, which is a service of the Family Tree DNA company.
I used a stringent setting, comparing at least 36 DNA markers. At the top row, the values of my "Single Tandem Repeats" or STRs are displayed, while the next rows display the variations when compared to the top 6 (43 markers). For each marker, the absolute variation is shown and summarized in the first row (grey).
Note: the following Ancestry.com markers were adapted according to YSearch:
Dys 441: Ancestry result = 14 >>> Ysearch = 13
Dys 442: Ancestry result = 17 >>> Ysearch = 12
Y-GATA-A10: Ancestry result = 15 >>> Ysearch = 13
Y-GATA-H4: Ancestry result = 12 >>> Ysearch = 11
Interestingly, the top 3 are the Belgeri family, descending from the Northern part of Italy closeby Switserland (Como area). The STR variations are between 9 and 11. Next to these, the families Griffith (London), Whalen (Ireland) and Staples (York, USA) also display a total variation of 11. All of these members were tested as being a member of Haplogroup/subclade R1b1b2a1b. However, clearly these families are not closely related ....
Haplogroup R1 subclade b1b2a1b, branching through Northern France/ Belgium towards the UK and Ireland?
The map above (source) displays the most likely path the R1b subclade has travelled. Apparantly, a "b-subclade" branched towards Belgium/Northern France and crossed the North Sea at its narrowest passage at Calais towards the South of England and finally Ireland. This b-subclade also closely passed the Alpes and further branched towards the Northern Part of Italy about a 1000 years later.
These passages coincide with my first ancestors (See star: Brabant or Limbourg), displaying highest similarities with Nothern Italian, UK and Irish members. I now also better understand the results obtained by the Ancestry mapping. However, relationships appear to date back to at least 4000 years, which correspond with about 100-150 generations. But why aren't there any high similarities with Belgian members yet? Possibly, I need to practice the settings more into detail. I will wait for the results of the Family Tree Y-67 analysis before further interpretations.
2. Family Tree
During March, additional Y chromosomal STR results were received from Family Tree DNA. Please find below all 76 Dys values, which can also be found here. Unfortunately, there are no high homologies, when comparing with both the Ysearch - and FTDNA databases.
Michael Roekaerts, originating from Belgium Brabant, compared his DYS results. The homology appears very limited however, which is a pitty since the name Roekaerts is one of the presumed family name variations. When checking the distribution using http://www.familienaam.be/, there may however be several non-related Roekaerts families, either origination from Limburg, Brabant or the French-speaking Wallony (see map below).
1. Ancestry
The results of the Ancestry Y-46 test arrived by email at February 1. A first comparison with the Ancestry database displayed most similarities with US(not shown) and UK members. In addition more distant relations appear in the South of Germany and Ireland (see map below).
However, data comparison appeared on a limited number of markers, while the number of DNA members may be relatively low. I therefore decided to manually compare the data using http://www.ysearch.org/, which is a service of the Family Tree DNA company.
I used a stringent setting, comparing at least 36 DNA markers. At the top row, the values of my "Single Tandem Repeats" or STRs are displayed, while the next rows display the variations when compared to the top 6 (43 markers). For each marker, the absolute variation is shown and summarized in the first row (grey).
Note: the following Ancestry.com markers were adapted according to YSearch:
Dys 441: Ancestry result = 14 >>> Ysearch = 13
Dys 442: Ancestry result = 17 >>> Ysearch = 12
Y-GATA-A10: Ancestry result = 15 >>> Ysearch = 13
Y-GATA-H4: Ancestry result = 12 >>> Ysearch = 11
Interestingly, the top 3 are the Belgeri family, descending from the Northern part of Italy closeby Switserland (Como area). The STR variations are between 9 and 11. Next to these, the families Griffith (London), Whalen (Ireland) and Staples (York, USA) also display a total variation of 11. All of these members were tested as being a member of Haplogroup/subclade R1b1b2a1b. However, clearly these families are not closely related ....
Haplogroup R1 subclade b1b2a1b, branching through Northern France/ Belgium towards the UK and Ireland?
The map above (source) displays the most likely path the R1b subclade has travelled. Apparantly, a "b-subclade" branched towards Belgium/Northern France and crossed the North Sea at its narrowest passage at Calais towards the South of England and finally Ireland. This b-subclade also closely passed the Alpes and further branched towards the Northern Part of Italy about a 1000 years later.
These passages coincide with my first ancestors (See star: Brabant or Limbourg), displaying highest similarities with Nothern Italian, UK and Irish members. I now also better understand the results obtained by the Ancestry mapping. However, relationships appear to date back to at least 4000 years, which correspond with about 100-150 generations. But why aren't there any high similarities with Belgian members yet? Possibly, I need to practice the settings more into detail. I will wait for the results of the Family Tree Y-67 analysis before further interpretations.
2. Family Tree
During March, additional Y chromosomal STR results were received from Family Tree DNA. Please find below all 76 Dys values, which can also be found here. Unfortunately, there are no high homologies, when comparing with both the Ysearch - and FTDNA databases.
Michael Roekaerts, originating from Belgium Brabant, compared his DYS results. The homology appears very limited however, which is a pitty since the name Roekaerts is one of the presumed family name variations. When checking the distribution using http://www.familienaam.be/, there may however be several non-related Roekaerts families, either origination from Limburg, Brabant or the French-speaking Wallony (see map below).
Similarly, several independant Roucourt families can be discriminated, from which it has been proven that only the Limburg family is indeed related to the Dutch Recourt family. Please check the Roucourt (and Rocourt) name distribution below.
So, I will need to search and contact the "Sint-Truiden Roekaerts" family to investigate a possible relationship.
