Y: York Cottage
Like so many other details, this hasn't been confirmed, but it's traditional for the Queen to gift the newly married couple with a house as a wedding present. She will likely give them York Cottage, a stately home on the grounds of Sandringham House, her country retreat. The cozy, charming house is described as "three merrie England pubs joined together."
Z: Zodiac
Meghan and Harry do not immediately look to be compatible based on their zodiac signs, since he's a Virgo and she's a Leo, but if you want to go deeper into their astrological charts, they prove that opposites attract but they also mirror each other in exactly the right places. Plus, having a wedding during Taurus season indicates a secure and enduring marriage. If you're into that kind of thing, you can find out more here.