He co-founded the clothing brand Fruit of the Loom, now owned by Warren Buffett's Berkshire Hathaway.
In 1846 Knight was employed by John Hopkins Clarke as a clerk in his factory store at Arnold's Bridge, now Pontiac, Rhode Island.
After Clark was elected to the U.S. Senate, Knight and a partner purchased the business and became owners of the Pontiac Mills.
By his death in 1912, the New York Times listed Knight as the largest cotton manufacturer in the world.
[2][3] Knight lived with his wife Josephine and family in the Elmwood neighborhood of Providence, Rhode Island.