It is derived from the Gaelic finn (fair, light-hued) with the Brythonic ending -iaw.
Finnian of Moville was born in 495.
Finnian of Moville died in 589.
Finnian of Clonard was born in 470.
Finnian of Clonard died in 549.
Finnian, also known as 'Finny' has not been given a last name as of yet.
Rebekah is not a Gaelic name and therefore doesn't mean anything in Gaelic.
It is not a Gaelic word. Gaelic has no K.
There is no Gaelic form of the name, if that's what you mean.
Crazzy doesn't mean anything in Gaelic.
In Scots Gaelic it mean a fishing weir.
Taylor is not a Gaelic word and has no meaning in Gaelic.
It has no meaning in Gaelic; it's not a Gaelic name.