Joe Jackson, the father of the late Michael Jackson and patriarch of the musical family, suffered a stroke while visiting Brazil and was hospitalized in the intensive care unit of a Sao Paulo hospital, the facility said Monday. The Albert Einstein hospital said in an emailed statement that Jackson was admitted on Sunday afternoon and was suffering from an irregular heartbeat. It did not provide any further details about Jackson’s condition, and a spokeswoman said the hospital did not have any further information. But one of the organizers of a party that brought Jackson to Brazil for his 87th birthday on Sunday said he was doing well.