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The O’Connors & Theiss

About The O’Connors & Theiss

Music Icon

Bill & Lin O'Connor have been performing in the southeast Wisconsin area since 1967. They have been a part of a number of folk style music groups and have recorded seven albums of Irish, original, folk and Christmas music. Since the mid-‘90s, they have been joined on stage by their sons, Chris and Tim, and musician friends when available. In 2021, Larry Theiss will also perform with them. They will also be joined on stage by several of their grand kids. The finger-style guitar work, their harmonies, and stories will leave you longing for the magic of Ireland. Sit back, close your eyes, and let their wistful sound transport you.

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2021 Festival Sponsors

Thank you to our sponsors & friends! View full sponsor list.

Ireland Bluffs

Aer Lingus Milwaukee Irish Fest Sponsor

Arena Americas at Milwaukee Irish Fest

Catholic Financial Life

CiderBoys Milwaukee Irish Fest Sponsor

Epic Creative Milwaukee Irish Fest Sponsor

Five Farms Irish Cream

Habush Habush Rottier


Fill Your Heart with Ireland - Milwaukee Irish Fest Sponsor

Lakefront Brewery

Miller Lite

Northwoods Web Solutions


  • Artist
  • Paddy
  • Celtic Canine & Kid
  • Artist with Violin
  • Crowd
  • Irish Fest Fans
  • Young Irish Dancers
  • Young Kid and Dad
  • Wisconsin Irish
  • Young Kids Dancing

Milwaukee Irish Fest Logo

1532 N. Wauwatosa Ave
Milwaukee, WI
Festival Grounds
Henry Maier Festival Park
Milwaukee, WI