Butch Cassidy recruited Harry Alonzo Longabaugh, also known as "The Sundance Kid", a native of Pennsylvania, into the Wild Bunch. In early 1897, Cassidy was joined at Robbers Roost by Ann Bassett, Elzy Lay, and Lay's girlfriend Maude Davis. The four hid there until early April, when Lay and Cassidy sent the women home so that the men could plan their next robbery. On April 22, 1897, in the mining town of Castle Gate, Utah, Cassidy and Lay ambushed a small group of men carrying the payroll of the Pleasant Valley Coal Company, stealing a sack containing $7,000 in gold, with which
Damian Cassidy was also on the 7's team that won the All Ireland 7's in 1986. Cassidy won Player of the Tournament at the 1997 Castlewellan 7's, which Bellaghy won. Cassidy retired in 1999. Cassidy won three MacRory Cup medals in 1982, 1983 and 1984 whilst at St. Patrick's College, Maghera (secondary school). He also played hurling for the college and won a Mageean Cup in 1984. Cassidy was Derry assistant manager to Eamonn Coleman from 2000 until 2002. Derry won the National League in 2000 and got to the All-Ireland semi-final in 2001. Following the resignation of Coleman in July 2002,