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.
Séamus
In the United States, the word "Shamus" is a derogatory slang misspelling of Séamus that arose during the 19th century as more than 4.5 million Irish immigrated to America, peaking at almost two million between 1845 and 1852 during ""The Great Hunger"" (Irish: "An Gorta Mór"). Irish immigrants found employment in the police departments, fire departments and other public services of major cities, largely in the Northeast and around the Great Lakes, and have been over represented in the New York police since then. Though still used by some as a derogatory term, the great preponderance of Irish and Irish-American law enforcement officers led to a persisting stereotype, and the name "Shamus" continues to refer to Irish-American police and private detectives.