Queen Elizabeth II's romantic history reveals that before her marriage to Prince Philip, her mother, the Queen Mother, favored another suitor, Hugh, Earl of Euston. Royal historian Hugo Vickers notes that the Queen Mother hoped Elizabeth would marry a member of the Grenadier Guards, a prestigious regiment. During World War II, Elizabeth and her sister spent time at Windsor Castle, where they met several Grenadier Guards, with Euston emerging as a favored candidate. However, Philip's uncle, Lord Mountbatten, helped facilitate Elizabeth's relationship with Philip by securing Euston a position in India, effectively removing him from the running. The royal family ultimately deemed Euston too passive, while Philip was seen as a modernizer with a distinguished naval background. Elizabeth's determination to marry Philip prevailed, leading to their engagement in July 1947 and marriage on November 20 of the same year. Philip supported the Queen throughout their marriage until his passing in 2021.