Prince Harry’s Spare is arguably the most controversial memoir of the year. Harry in the 416-page book, which was officially released today, revealed several juicy tidbits about growing up in the royal family including being physically assaulted by his brother and King Charles being worried about him and his wife Meghan Markle stealing the spotlight. But like many other high-profile figures, Harry had help from a ghostwriter — US-based journalist and author John Joseph Moehringer. But what do we know about the 58-year-old? Let’s take a closer look: Also read: The big shockers from Prince Harry’s memoir: Cocaine use, killing...