Analysis of information sources in references of the Wikipedia article "Leinster" in English language version.
Brigit (Goddess)
Murchad, that Ui Dunlainge king who founded an unbroken rotational line of Leinster kings which lasted from 715 to 1042
Leinster from the death of Toirdhealbhach O'Connor in 1156 to the establishment, in 1606, of County Wicklow – the last Irish and Leinster county to be created
which gives Leinster as the official English name of the Province and Laighin as the official Irish name of the Province and cites "Ordnance Survey Office, Dublin 1993"
which gives Leinster as the official English name of the Province and Laighin as the official Irish name of the Province and cites "Ordnance Survey Office, Dublin 1993"
Brigit (Goddess)
Murchad, that Ui Dunlainge king who founded an unbroken rotational line of Leinster kings which lasted from 715 to 1042
Leinster from the death of Toirdhealbhach O'Connor in 1156 to the establishment, in 1606, of County Wicklow – the last Irish and Leinster county to be created