Gaelic does mean irish-celtic lol
This is wrong. Look it up. The rest of your post isn't relevant but I'll reply to it anyway.
the celtic tribes that havnt originated in ireland are the welsh, the manx(isle of man) and the cornish tribe whos name i can no longer remember
Also wrong. Just please. Research and
try to understand the basic concepts, then
the details. You'll learn alot more that way.
Protip to get you started: Celtic culture is widely believed by historians to have originated in continental europe.
But none of that is relevant. The bottom line is Gaelic isn't a word that means irish-celtic.