Jack Dorsey Jack Dorsey Jack Patrick Dorsey (born November 19, 1976) is an American computer programmer and Internet entrepreneur who is co-founder and CEO of Twitter, and founder and CEO of Square, a mobile payments company. Dorsey was born and raised in St. Louis, Missouri, the son of Marcia (née Smith) and Tim Dorsey. He is of English, Irish and Italian descent. His father worked for a company that developed mass spectrometers and his mother was a homemaker. He was raised Catholic, and his uncle is a Catholic priest in Cincinnati. He attended the Catholic Bishop DuBourg High School. In his younger
Tommy Dorsey India", "Marie", "On Treasure Island", and his biggest hit single, "I'll Never Smile Again". Born in Mahanoy Plane, Pennsylvania, Thomas Francis Dorsey Jr. was the second of four children born to Thomas Francis Dorsey Sr., a bandleader, and Theresa (née Langton) Dorsey. He and Jimmy, his older brother by slightly less than two years, would become famous as the Dorsey Brothers. The two younger siblings were Mary and Edward, who died young. Tommy Dorsey studied the trumpet with his father but later switched to trombone. At age 15, Jimmy recommended Tommy to replace Russ Morgan in The Scranton Sirens, a