--- O'Byrne (Ní Bhroin)

✓ A daughter of Pilib (Philip) O'Byrne (Ó Broin) of the Wicklow Ui Bhroin; wife of Art Mac Murchadha, King of Leinster (d. 1362), who was her first cousin, and mother of Art Mor/Art Og Caomhanach (1357-1416/17): DIB 'Art (d. 1362) ... married his first cousin, the daughter of Pilib O'Byrne'; DIB on the son: 'second son of Art MacMurrough, king of Leinster, and a daughter of Philip O'Byrne'. Name not recorded; her father not wired (the O'Byrne lordship is treated in E. O'Byrne's thesis 'The origins of the Ui Bhroin of Co. Wicklow and their lordship to 1434'). Source: Dictionary of Irish Biography, 'MacMurrough (Mac Murchadha), Art (d. 1362)' by Emmett O'Byrne (dib.ie/biography/macmurrough-mac-murchadha-art-a5073), read 27 Oct 2026; Source: Dictionary of Irish Biography, 'MacMurrough Kavanagh, Art Mor (1357-1416/17)' by Emmett O'Byrne (dib.ie/biography/macmurrough-kavanagh-mac-murchadha-caomhanach-art-mor-a5074), read 27 Oct 2026. [DIRECT ANCESTOR OF THE COMPILER: flag added 27 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]