I first heard "The Bonnie Lass of Fyvie" sung by Wilfried Drygala, a Scots buff and erstwhile member of the "Idle Fellows". It is a fairly long twelve-verse song and he always sang it very well in that soft voice of his.
It's a nice long tale of the courting of a bonnie lass by a gallant Irish Dragoon captain. The bonnie lass, Peggy, will not have anything to do with him bein' a "sodger" an' all and so our luckless captain marched away on his colonel's orders eventually to die of unrequited love.
The Clancy Brothers give a much truncated version in their The Irish Songbook