Most groups here are Active Branches of our Patriarch Lines section. Sometimes just a single individual has tested, is not yet matching to others, but has several hundred years of research. We include them in the Active Branches if so. The project identifies a patrilineage when either strong genealogical work exists and/or when DNA tests on two or more men show a high probability that they have a common ancestor. Each lineage has a volunteer coordinator, who promotes the gathering of more information about the lineage through further DNA tests and traditional genealogical research.
We use yDNA STR and yDNA SNP testing to support our patrilineal effort here. Such analysis can push much further back, around 1,000 years, to find matching cousins. Autosomal (atDNA) is only useful for Near Term matching (within 100-200 years). Most often of benefit when a known patrilineal group member matches to another member not on the male-lineage line. Matrilineal (mtDNA) is not useful in a genealogical time frame except to confirm matrilineal genealogical ancestors have the same mtDNA test result. See our Genetic Genealogy page for a better description of testing types and how they are helpful.
A DNA Grouping is defined as one with identical yDNA SNP results (in the main, haplogroup defining SNP's) and very similar (near identical) yDNA STR values that strive to define a Modal Haplotype for the EKA and branching changes that mimic the descendants.
Note: Our Co-admin Tim notices that almost all the groups beside the Charles Hoare line are in the P312 Haplogroup sub-branch (R1b1a2a1a-2). He mentions there is lots of activity there and that at least one from each branch should do a deep SNP (e.g. BigY) test and join that study project.