who died last week (July 12).The actor’s brother, who was 27, took his own life, a coroner confirmed in the days following his death.Benjamin and Riley Keough are the children of musician Danny Keough and Lisa Marie Presley, and the grandchildren of Elvis Presley.Posting on her Instagram page, Keough shared a series of photos of her brother. “Mornings are the hardest,” she wrote in the caption.