However, the O'Byrne clan, to which Fiach belonged, had a motto: "Crom abú!" This translates to "The crooked one forward!" or "Victory to the crooked one!". The "crooked one" refers to the "crooked" branch of the O'Byrne family, of which Fiach McHugh was a member. This motto signifies their defiance and willingness to fight for their independence.
It's important to note that while Fiach McHugh might not have had a personal motto, the O'Byrne clan's motto encapsulates his rebellious spirit and his fierce loyalty to his clan.