This started out OT...my husband and I took part in the National Geographic's Genographic Project which tests certain portions of DNA to determine deep ancestry. We got our results last week. For me, I was determined to be haplogroup 'T', which is common in about 10% of European ancestry. I've read elsewhere that this group migrated out of Africa, through northern Italy, and many continued into Ireland. Although this is very, very general, and we're talking about 50+ generations ago, this did not surprise me...from what I know about my maternal line (mother's mother's mother's mother's, etc.), my 3great grandmother was born in Ireland in 1811. Because I'm me, I took the haplogroup 'T' category and plugged it into a search engine. On the very first page of hits, I came across an abstract on a medical study stating that haplogroup 'T' is 4 to 5 times more likely to be effected by peripheral neuropathy than other DNA types. Somehow that didn't surprise me either! Figures!