'Horse' doesn't mean anything in Gaelic; it's an English word.
The Irish Gaelic word is capall. The Scottish Gaelic is each. The Welsh word is ceffyl or march. The Cornish word for Horse is Margh. There is not a single Celtic language but six. The others are Manx Gaelic and Breton.
each
Capall.
Rebekah is not a Gaelic name and therefore doesn't mean anything in Gaelic.
It is not a Gaelic word. Gaelic has no K.
Crazzy doesn't mean anything in Gaelic.
In Scots Gaelic it mean a fishing weir.
There is no Gaelic form of the name, if that's what you mean.
It has no meaning in Gaelic; it's not a Gaelic name.
Taylor is not a Gaelic word and has no meaning in Gaelic.
'You' is not a Gaelic word.
It is not a Gaelic word.