Hemsley appears to have died from natural causes, TMZ reports. Sources say he was discovered by his nurse who initially thought that the actor was sleeping.
The 74-year-old star, who rose to fame after his appearances on “All in the Family” and ultimately the spinoff, “The Jeffersons” was also a professional singer.  
Hemsley was born in Philadelphia and ultimately dropped out of high school to join the Air Force, People magazine reports. He later worked for the U.S. Postal Service before turning to show business.
“The Jefferons” earned Hemsley both Emmy and Golden Globe nominations.