Who was the irish american leader of knights of labor

Terence Powderly was an Irish-American labor leader who is best known for leading the Knights of Labor from 1879–1893. At the time, the Knights of Labor was the largest labor organization in the United States (and is now considered our nation’s first successful national labor union). Powderly also was a pro-labor politician, serving as the mayor of Scranton, Pa., and was later appointed as the commissioner general of immigration by President William McKinley