The last of our kind?

There is one bloodline of the O'Neill's of Puerto Rico that is of the SNP L48 / R1b1b2a1a4. These are the descendants of Don Juan O'Neill who arrived in Puerto Rico in the early 1700's. The Haplotype is well established with unique values at markers DYS YCA II b and DYS 456 .

Currently there are none of the O'Neill's tested within the SNP L48/ R1b1b2a1a4 out of less than 200 tested in the O'Neill DNA project. But there are MacLochlainn's in their respected dna project who are of the SNP L48 / R1b1b2a1a4 this is a very interesting find since the MacLochlainns of Ulster are the closest kindred to the O'Neill's but it's not known of the origins of these MacLochlainn's at the moment . It's will very unlikely that the O'Neill's of Puerto Rico will not find any y-dna matches among the O'Neill's in Ireland, Australia , and the United States. The odds are very slim but among the O'Neill's in Spain, Portugal , the Caribbean and the Netherlands the odds of having a match improves. The mayority of the O'Neill's currently tested fall into 4 groups of SNP's the I2b1a, R1b1b1b2a1b5b who are less common unlike the SNP / Haplogroup R1b1b2a1b and R1b1b2 but it must be noted many of these tested have not had their SNP tested.

Very unlikely they will be many O'Neill's in Australia , United States and Ireland of the SNP L48 and of the O'Neill's of Puerto Rico unique haplotype if there is a match this will be a one in a million match since not even other surnames match this bloodline in any database.

So it's looks like this bloodline is the last of it's kind among the O'Neill's and other surnames.