Because I can, and I will.
The original Gaelic form of the name Doran is O Deoradhain, which was later shortened to O Deorain. Both names are probably derived from the word deoradh, referring to an exile. Numerous spelling variations of the surname Doran exist, including Doran, Dorran, O'Doran, O'Deorain, Dorain, Doron and others. First found in Leix, where they held a family seat from ancient times.
Many variations of the name Kirwan have evolved since the time of its initial creation. In Gaelic it appeared as O Ciardhubhain, which is derived from the words "ciar" and "dubh", both of which mean "black". Numerous spelling variations exist, including Kirwan, Kirwin, O'Kirwan, Kerovan, Kyrvan, O'Quirivan, Kerwin, Kerwan and many more. First found in county Galway where they held a family seat from ancient times. Family motto, "Mon Dieu, Mon Roi, et ma patrie" (My god, my king, my country).