?jevind L?ng
Michael O'Neill wrote: [snip}

Michael O'Neill
Now you either know about the various cetic blood types or you don't Ojay. A recent genetype research program [on the telly shortly after Christmas IIRC] found the old blood still lurks in the coastal regions of Britain and all over Ireland. Very little Norman penetration so to speak. Lots of Celtic blood around here.

?jevind L?ng
Michael, as you presumably know, heredity is not carried through the blood - it is carried by the genes. Neither is there some kind of "blood" that can with a certainty be said to have been the only type among people belonging to a certain linguistic group at any point in history. There are no "Celtic blood types". True, certain bloodgroups and other genetic traits tend to be more common in certain human groups than in others. For example, whereas AB- blood (my blood type) is common in Africa and Asia but very uncommon among people of European descent, it is fairly common in Finland (my mother's country of birth).