Eau Claire is a city in Eau Claire and Chippewa counties in the U.S. state of Wisconsin. It is the county seat of Eau Claire County. It had a population of 69,421 in 2020, making it the state's eighth-most populous city. It is the principal city of the Eau Claire metropolitan area, locally known as the Chippewa Valley, and is also part of the larger Eau Claire–Menomonie combined statistical area.

The McCann brothers were three Irishmen who migrated from Ohio to Wisconsin in the mid-nineteenth century. They played an important role in the early phases of Wisconsin's lumber industry, and in the political and social organization of Chippewa County.