The death of King João VI of Portugal remains shrouded in mystery, prompting renewed debate among historians. Questions linger regarding the precise date of his death and whether he was still alive when a crucial decree altering the line of succession was signed. Some speculate the decree was signed after his death, or even that the signature itself is a forgery. These uncertainties cast doubt on the legitimacy of the succession changes. The controversy centers on conflicting accounts and a lack of definitive evidence surrounding the king’s final hours. Researchers are revisiting historical records to attempt to resolve the lingering questions and establish a clearer timeline of events surrounding the monarch's passing and its political ramifications. This historical debate continues to fuel speculation and investigation into the true circumstances of Dom João VI’s death.