And here's how the chords fit the words:-

A NATION ONCE AGAIN

 Dm 
Eileen Oge! an' that the darlin's name is;
   C  
Through the Barony her features they were famous;
Dm    
If we loved her, who is there to blame us,
                    A7            Dm 
For wasn't she the Pride of Petravore?

 Bb             F  
But her beauty made us all so shy,
 Gm    A7        Dm  
Not a man could look her in the eye,
 Bb                  F                A7 
Boys, O boys! sure that's the reason why
       Dm                A7           Dm 
We're mournin' for the Pride of Petravore.

     Bb             F 
    Eileen Oge! me heart is growin' grey
    Gm              A7      Dm  
    Ever since the day you wandered far away;
     Bb                  F 
    Eileen Oge! there's good fish in the say (sea)
                Dm                A7           Dm 
    But there's no one like the Pride of Petravore.

Cheers,
Alan