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.
Irish Americans
Between 1607 and 1820, the majority of emigrants from Ireland to America were Protestants who were described simply as "Irish". The religious distinction became important after 1820, when large numbers of Irish Catholics began to emigrate to the United States. Some of the descendants of the colonial Irish Protestant settlers from Ulster began thereafter to redefine themselves as "Scotch Irish", to stress their historic origins, and distanced themselves from Irish Catholics; others continued to call themselves Irish, especially in areas of the South which saw little Irish Catholic immigration. By 1830, Irish diaspora demographics had changed rapidly, with over 60% of all Irish settlers in the US being Catholics from rural areas of Ireland.