"Kilgary Mountain", also known as "Whiskey in the Jar" is the tale of a highwayman who, after robbing a military or government official, is betrayed by a woman (wife or lover). Various versions of the song take place in Kerry, Kilmoganny, Cork, Sligo Town, and other locales throughout Ireland.
The song appears in many versions. Names in the song change, and the official can be a Captain or a Colonel, called Farrell or Pepper among other names. The protagonist's wife or lover is sometimes called Molly, Jenny, or Ginny among various other names.
The song has been widely recorded and in the early days of the folk revival (1960's) was recorded by:
      Burl Ives – 1958
      The Highwaymen – 1962
      The Brothers Four – 1962
      The Limeliters – 1962
      Peter, Paul & Mary – 1965
I remember listening to all of these and my version is probably a conglomeration of them all.