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"The Flight of the Wild Geese was the departure of an Irish Jacobite army under the command of Patrick Sarsfield from Ireland to France, as agreed in the Treaty of Limerick on 3 October 1691, following the end of the Williamite War in Ireland. More broadly, the term "Wild Geese" is used in Irish history to refer to Irish soldiers who left to serve in continental European armies in the 16th, 17th and 18th centuries." (Wikipedia)
I've broadened it further to encompass all Irish people forced by circumstances to leave their homeland.

Wild Geese

Screen_shot_2017-12-05_at_08.50.24by Patrick Howse03 Nov 2016

From a wet green-bleak world
Prone to storms they fled,
Whipped more by foul winds
Than helped on by fair.

Across a hundred hostile lands
They searched for something,
Something taken from them,
A vagueness that gnawed

Through any sense of home.
One by one their progeny
Descend from a sky clouded
By estrangement from everywhere.