Using 23&Me's Compare Tools

 

23&Me DNA Compare.

I'm looking again at segments in common across DNA matches. Above are three members of a mystery cluster of Beltran matches, with a verified Portillo connection in turquoise and a Bernal match in green. They all overlap on chromosome 3, with a segment about 20 cM.

I found the Beltran matches by first sorting on 23&Me by mtDNA haplogroup, for all of matches in common who were A2d. I thought this might pull in people who had tested on 23&Me and might have some connection to the branches with surnames Portillo, Diaz, Calles, Bernal, Flores, Quijada, Preciado, Grijalva, Lopez, Acuña, or Gradias. Because I do not know my Portillo branch of my 3rd-great-grandfather Manuel Portillo very well, I thought maybe using 23&Me's DNA compare tools might help identify some matches who shared my mtDNA haplogroup and appear to be potentially connected to this branch of the tree.

23&Me has some useful tools for filtering matches, as shown below by haplogroup.

There's more to do, and I am trying to see if these Beltran or Bernal matches appear on other platforms such as FTDNA, Gedmatch, MyHeritage or Ancestry.