This is what we found on Wikipedia regarding the The Dublin Folk Festival:

The Dublin Irish Festival is an annual music and cultural festival held in Dublin, Ohio. It takes place during the first weekend of August, attracting over 100,000 visitors to eight entertainment stages on 29 acres (120,000 m²) in and beyond Coffman Park. Activities include Irish and other Celtic music, genealogy, food and drink, dance, cultural exhibits, games, sports, arts and crafts, and children's activities. The Dublin Irish Festival Academy offers a variety of classes led by DIF performers highlighting Irish music and culture.

The event, produced and supported by the City of Dublin, is the largest 3-day Irish Festival on the planet. The Columbus Feis, an internationally renowned Irish dance competition, occurs every year at the same time as the Irish Festival. The 2021 Dublin Irish Festival took place on August 6–8. This festival will mark 37 years. The main attractions play at stages located throughout Coffman Park, including the Guinness Celtic Rock Stage, Ohio State Wexner Medical Center Dublin Stage, The Memorial Tournament Trinity Stage, Giant Eagle Irish Thunder Stage, G & J Pepsi Shamrock Stage, Celtic Music House, Wendy's Wee Folk Stage and the Cardinal Health Ceili Dance Stage.