Cosmic Twins?

King Umberto I of Italy would go to a specific restaurant for dinner at times. One day he had an uncanny experience when he learned that the owner of his favorite restaurant was not just born on the same day as him but also in the same town. Even the name of both of their wives was Margherita. But that is not the end. One day Umberto learned that the owner had been shot and killed, and what more? The King was also assassinated later in the afternoon on the same day.