Based on this link I think Irish, Scottish, and Manx are all Gaelic languages.

No...gaelic is really a blanket name for all the celtic languages.  Irish speakers and Scots Gaelic speakers would not necessarily understand each other.  As a matter of fact Irish speakers from the East and West of Ireland would have difficulty understanding each other.


We are all in the gutter, but some of us are looking at the stars. Oscar Wilde