Matt & Dan Walsh was born in United States. Matthew Walsh III and Dan Walsh are new to the Forbes Billionaires list this year. They own and run the Walsh Group, a Chicago-based general contracting firm. With annual revenues eclipsing $4 billion, it is among the 15 largest general contractors in the United States. They're the third generation to run the family-owned firm first founded as Walsh Construction by their grandfather in 1898. The company has expanded its holdings to include everything from highways and waste water treatment plants to train tracks and prisons. The firm is comprised of a series of smaller operating units including Archer Western and R&L Brosamer.