Irish Canadians
The first waves of Irish immigrants took place between 1763 and 1880. when ten thousand Irish immigrants arrived on the Island. From 1800 to 1850, "10,000 immigrants from every county in Ireland" had settled in Prince Edward Island and represented 25% of the Island population by 1850.
Scotch-Irish Americans
A few generations after arriving in Ireland, considerable numbers of Ulster-Scots emigrated to the North American colonies of Great Britain throughout the 18th century (between 1717 and 1770 alone, about 250,000 settled in what would become the United States). According to Kerby Miller, "Emigrants and Exiles: Ireland and the Irish Exodus to North America" (1988), Protestants were one-third the population of Ireland, but three-quarters of all emigrants leaving from 1700 to 1776; 70% of these Protestants were Presbyterians. Other factors contributing to the mass exodus of Ulster Scots to America during the 18th century were a series of droughts and rising rents imposed by often absentee English and/or Anglo-Irish landlords.