Joe Jackson -- the patriarch of the Jackson family -- has died ... TMZ has learned. Family sources tell TMZ, Joe passed away at 3:30 AM Wednesday in L.A. We broke the story ... Joe was hospitalized in June with terminal cancer. His family had been flocking to his bedside since. His wife, Katherine, had been at his bedside as were some of Joe's children and grandchildren. Joe had been battling health problems for some time now. He was hospitalized back in 2016 after coming down with a high fever. But, he bounced back not long after and was seen...