"Born in Dublin to English parents." 
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Gad that would make Swift an anchor baby! This fact so upset his Royalist parents that his father died soon after and his mother fled to England. The advent of the Glorious Revolution induced Swift to flee to his true mother country and seek asylum in organized religion.
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Perhaps a good part of his life was spent as a cleric but the naughty portion was devoted advocating scientific methods of addressing Ireland's myriad of ills. 
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Hence "A Modest Proposal for Preventing the Children of Poor People From Being a Burthen to Their Parents or Country, and for Making Them Beneficial to the Publick." a.k.a Ireland's First Cookbook.