There was a republican paramilitary organisation back in the sixties known as “Saor Éire”. I always understood it as “Free Ireland” “free” being an adjective. In Irish the adjective usually comes after the noun but in certain circumstances it can come before the noun. Any opinions anyone?

the adjectives come after, except certain adjectives like sean, droch… but these are exceptions.
And it’s the same thing in all the modern Celtic languages.