PLUMMER Y-DNA HAPLOGROUPS
According to research posted at Familytreedna and charted at http://www.worldfamilies.net/surnames/plummer/resultshttp://www.worldfamilies.net/surnames/plummer/results, the Plummer families in the United States fall into roughly four groups (with some isolated outliers).
* The largest group, R1b1a2, includes but is not limited to the descendants of Francis Plummer of Massachusetts. (R1b1a2 is very common across western Europe and occurs in multiple variants - which is one reason among many that Familytreedna is switching over to the SNP system.)
* The "Pennsylvania Plummer" line surprised everybody - they belong to haplogroup R1a1a, and nobody knew they were a separate grouping until some descendants got Y-DNA tested.
* The Anne Arundel line - barring an embarrassing genetic "Oops" such as the one that upset the Bourbon applecart recently - all belong to haplogroup G, with one representative deep-tested to G2a3b1. If these results hold up, they *cannot* be related to the Massachusetts Plummers or to any of the other groups. *And none of the others are related to them.*
* The "Kemp Plummer" line of southeastern Virginia and North Carolina is different again - they tested I2b2.
Outliers include one I1, two J2s, and an I2a2b who is generally thought to have been an adoptee.
Levi Plummer's line, incidentally, tests R1b1a2 - it's a match to the "Alexander Plummer, KY" lineage, which is not an exact match to the Massachusetts lineage, and NOT AT ALL like the Anne Arundel lineage. This means somebody was probably not telling the truth about somebody's baby daddy.