If you were looking for the old Irish/English heroic fight to the end kind of thing you could use "The Blood of Cuculan". I am pretty sure that is not the way you spell it, but it was the Irish music at the beginning of Boondock Saints if you are familiar with it. Has kind of a old world we'll fight to the end kind of feel, but then again not really sure what style of music you are looking for.
ooo i cant remember wat its called but i know this reli kl 1 il ask my bro i think it might be in a bit of the matrix or sumthing. ask him wen he wakes up