When people think of Irish emigration, they often think of the Great Famine of the 1840s, which caused many to flee Ireland for the United States. But the real history of the Irish diaspora is much longer, more complicated, and more global.

In On Every Tide, Sean Connolly tells the epic story of Irish migration, showing how emigrants became a force in world politics and religion. Starting in the eighteenth century, the Irish fled limited opportunity at home and fanned out across America, Canada, Australia, and New Zealand. These emigrants helped settle new frontiers, industrialize the West, and spread Catholicism globally. As the Irish built vibrant communities abroad, they leveraged their newfound power—sometimes becoming oppressors themselves.

Deeply researched and vividly told, On Every Tide is essential reading for understanding how the people of Ireland shaped the world.