Hope this isn't seen as being too far removed from the general interest here .
http://www.nature.com/articles/srep42187
The upshot of the study is that the Irish travellers are of Irish descent , closely resembling the wider Irish population .
There is no genetic connection to Roma travellers .
The possible dating of the origin of the travellers used two different methods both agreed it was before the Great Famine of 1845-1852 .One method proposed a split approx 1200 yrs ago the other 360 yrs ago .
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