'The five royal tribes of Wales' and 'The fifteen tribes of Gwynedd'
refer to a class of genealogical lists which were compiled by Welsh
bards in the mid-15th century. These lists were constructed on the
premise that many of the leading Welsh families of their time could
trace their descent to the 'five royal tribes of Wales' or the
'fifteen noble tribes of Gwynedd'. This is not to say that the lists
In the surviving manuscripts, the first occurrence of the 'fifteen
tribes of Gwynedd' is probably in parts written by Gutun Owain in NLW,
Peniarth MS 131. The Welsh headings which stand above the pedigrees
of Eunydd of Dyffryn Clwyd and Hwfa ap Cynddelw on p. 85 and the
tribe of Gollwyn ap Tangno on p. 90 all read something like 'one
of the 15 tribes (llwyth)'. A related list is found in BM. Add. MS
14.919, f. 121v.
A more developed example is to be found on two folios of a 16th or
17th-century manuscript in the British Library, Harleian MS 1970, fos
34r-v, where the list is accompanied by a number of heraldic designs.
The basic idea of five regal and fifteen common (i.e. noble) tribes
was later used by the antiquarian and genealogist Philip Yorke as a
model for his Royal Tribes of Wales (1799).
'DNA Research CymruDNA Wales'
Recent DNA research has shown a percentage of Welshmen living today
are descended from ancient Kings and Princes of Wales.
The quintessential DNA signature R-L371 aka S300 snp is believed to
have originated in North Wales, possibly Anglesey county around 1000
^ Siddons, "Genealogies  Welsh", p. 802
^ a b Bartrum, "Hen Lwythau Gwynedd a'r Mars", p. 233
^ Yorke, Philip (1799). The Royal Tribes of Wales. Wrexham.
^ Bevan, Nathan (2014-09-25). "Dafydd Iwan's rare genetic roots
unveiled in new project". walesonline. Retrieved 2018-03-31.
^ Bodden, Tom (2014-09-26). "Dafydd Iwan 'descended from Welsh kings'
who ruled in England". northwales. Retrieved 2018-03-31.
^ "L371 (L21>DF13>L371) aka S300 and 17-14-10".
anthrogenica.com. Retrieved 2018-03-31.
Siddons, Michael (2006). "Genealogies  Welsh". In John T. Koch.
Celtic Culture. A Historical Encyclopedia. 5 volumes. Santa Barbara,
Denver and Oxford: ABC Clio. pp. 800–2.
Bartrum, Peter C. (1962). "Hen Lwythau Gwynedd a'r Mars". National
Library of Wales Journal. 12: 201–235.
Bartrum, Peter C. (1983). Welsh Genealogies. A.D. 300–1400: Welsh
Genealogies A.D. 1400–1500. Aberystwyth: National Library of
Siddons, Michael Powell (1991). The Development of Welsh Heraldry. 1.
Aberystwyth: National Library of