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Sources are unanimous in saying that the origins of this Irish folk song are “somewhat unclear.” Since its theme is so universal (a woman left behind as her sweetheart goes to war), you could say that the exact historical reference doesn’t really matter all that much, but it’s always interesting to dig into such things (if you’re a history nerd like me). The most common theory about the song’s background says that it refers to the time of the British Glorious Revolution in 1688, when James II of England, a Roman Catholic, was deposed and replaced by William of Orange,1 a Protestant, and his wife Mary, the daughter of James by a previous marriage and also a Protestant. (If you want a fuller overview of this turbulent time, see my post about the song “Loch Lomond.”)
The Irish were solidly on the side of Catholicism, joining in with James II’s heirs in various attempts to wrest the throne from the wicked William’s hands. (That’s how they saw him, anyway.) But it was all in vain. By 1691, three years after William’s ascension to the English throne, the so-called Williamite War in Ireland was ended with the Treaty of Limerick (a town in Ireland).2 Although there were assurances of safety for Irish soldiers who remained at home, many of these men chose to go to France for military service there. (They were pretty savvy to leave, as the promises to those who stayed weren’t kept.) After all, if your profession is that of a soldier, and you’re forbidden to fight in your homeland, why not go somewhere you can? Louis XIV of France really wanted Irish soldiers to help him in his war against the Dutch, and William III was Dutch. So these exiled Irish soldiers could console themselves with the thought that they were continuing to fight the good fight. This exodus of Irish soldiers to France is called “the flight of the wild geese.” About 20,000 Irish in total fled Ireland, including about 6,000 women.