During or before the 7th century, the Gaels established a settlement in the area that is now Dublin, Ireland.  Today, Dublin is the capital of Ireland, as well as its largest city. During Swift's lifetime, Dublin was the second-largest city in the British Empire. All throughout the eighteenth century, Dublin saw great growth and development. In 1759, the Guinness brewery was founded in Dublin and soon became the largest brewery in the world as well as the largest employer in Dublin. 

Quotes from: A Modest Proposal

"As to our City of Dublin; Shambles may be appointed for this Purpose ..."

"I compute that Dublinwould take off, annually, about Twenty Thousand Carcasses;"