Hello List,
Just some further information on our CARRICO haplogroups...
On the same map I earlier mentioned showing the distribution of haplogroup
J2a1b, which was Map J-M67 in Figure 2 on this page:
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1181965
The distribution of haplogroup J2a1b1 is shown in Map J-M92 of the same figure.
There is a navigation box obscurring part of the map, which you can make
disappear/appear by clicking the black arrow in the lower right corner. If you
compare the two maps in the bottom row of the figure, you are comparing the
respective distributions of the two subclades to which our CARRICOs belong.
Above the maps is a phylogeny of the mutations so far discovered in Haplogroup
J, with a time-scale on the left. These indicate that the 12f2 mutation
defining Haplogroup J occurred 31.7 ± 12.8 thousand years ago. The M67 mutation
defining subclade J2a1b (the clade to which the descendants of Peter CARRICO
belong), arose 11.6 ± 2.6 thousand years ago. The M92 mutation defining
subclade J2a1b1 (to which the CARRICO emigrant from Portugal belongs), arose 8.8
± 2.3 thousand years ago.
Although it's obvious that our two groups of CARRICOs had to have adopted the
surname independently, I don't think it's insignificant that both groups were
living in similar regions and had phylogenetically adjacent subclades. The
historical events and/or cultural conditions (mainly, the shared language) that
led to the adoption of this surname may have been similar or the same, even if
the bloodlines of the families were different. As a parallel example, it may be
rather like two Englishmen adopting the surname BAKER because both were bakers
by trade. Even though they weren't the same biological family, they were the
same culture, shared the same language, and shared the same reason for adopting
the name. The name CARRICO is so rare, it's hard for me to believe there isn't
some kind of cultural similarity between those of us whose ancestors adopted it.
Diana