Muircheartach mac Muiris Mac Murchadha King of Leinster

✓ Muircheartach mac Muiris Mac Murchadha, King of Leinster, father of Art (d. 1362): AFM 1416.9, the obit of his grandson, 'son of Art Kavanagh, who was son of Mortogh Kavanagh, son of Maurice Kavanagh'; DIB: Art 'was eldest son of Muircheartach mac Muiris MacMurrough, king of Leinster'. He is the 'Mac Murchadha' of the annals for 1354 - AFM 1354.2 'Mac Murrough was put to death by the English; in consequence of which a great war broke out between the English and Irish'; LC 1354.10 / AU [1351=1354].12 / AConn 1354.11 'torn asunder by the Foreigners' - DIB: with O'Byrne aid he and his brothers took the leadership of the dynasty after the assassination of their cousin Domhnall MacMurrough (5 Jul 1347); after submitting in April 1354 they turned on the English, 'the elder MacMurrough was quickly captured ... Muircheartach was brought by sea to Wicklow and executed as a warning to his son' (Oct 1354). Wife not recorded. Sources read 27 Oct 2026 on CELT: Annals of the Four Masters (O'Donovan) T100005C-D; Annals of Loch Cé T100010B; Annals of Ulster T100001B; Annals of Connacht T100011; 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. [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.]