Prince Ernst August of Hanover obviously wasn't an ideal husband, so it shouldn't be a surprise that he wasn't there for his wife, Princess Caroline, while she mourned the death of her beloved father, Prince Rainier III. The palace announced the royal's death in 2005 with a statement that read, per ABC News, "His Most Serene Highness Prince Rainier III died ... following broncho-pulmonary, cardiac and kidney disorders."

Caroline was presumably devastated to lose her father, as she appeared to have grown close to him after her mother's death. Yet what had to make things more difficult for her was that her husband, Ernst, fell into a coma the day before Rainier died. He had been hospitalized for acute pancreatitis and once awakened from his coma, was placed in intensive care. That means on top of her grief, Caroline was probably worried about her husband's health.

While that wasn't necessarily Ernst's fault, his disease and hospitalization were connected to his heavy drinking. He was eventually able to return home but the palace revealed he'd need constant medical attention. The Prince admitted to Hello! (via Royal Musings) that the whole ordeal changed him for the better since it served as a wake-up call. "My lifestyle was more than heavy ... But from now on, that's going to change," he said, adding, "Only now I have realized the real danger. I could have died." Unfortunately, however, that change of heart didn't last long.