From Ohio History Central
Many of the people who moved to Ohio in the years after the American Revolution originally came from England. Some of these people were former soldiers in the British Army. Having seen the land available in the Ohio Country during the American Revolution, they chose to remain in the region. Some of these people were squatters, while others purchased their land legally from the federal government or from real estate speculators.
A similar movement of people occurred after the War of 1812. The English immigrants came from a variety of social and economic backgrounds. Like the Irish, some of these people found employment on the canals and railroads. Other English men and women worked in factories. Like most Ohioans, a large number of English people were farmers. The English immigrants generally had an easier time than their Irish counterparts. Many white Ohioans disliked the Irish because of their religious beliefs. Most Irish migrants were Roman Catholics. Most other Ohioans were Protestants. Many English immigrants were also members one of the various Protestant denominations.
Prior to 1900, most foreign-born people living in Ohio came from Western Europe. Most of these people were of German origin (204,160 in 1900), with the English and English Canadians second at 64,629 people, and the Irish third at 55,018 people.