See Irish Gaelic translator website
It would be 'Riley, mo mhac, mo chuid den tsaol'.
The Irish Gaelic spelling of the surname O'Reilly is Ó Raghallaigh (descendant/grandson of Raghallach. If it is being used as a forename it would probably be "Riley" as in English.
The word for 'son' is mac in both Irish and Scots Gaelic.
'Son' is mac in both the Irish language and the Scottish Gaelic language.
The name Riley is of Gaelic origin. it was originally a boys name but after time a few girls have got it. the name Riley means gallant.
In Irish it's Ó Raghallaigh / Ó Raghailligh
Latha na màthraichean
mac in Irish and Scottish Gaelic.
In Irish and Scottish Gaelic it's "do mhac"
It is mac in Scottish Gaelic.
Do mhac
Scottish Gaelic: agusIrish Gaelic: agus