For all of Harry and Meghan’s near-constant talk about needing their privacy, it is an unfortunate running theme that their every single action seems designed to elicit both headline inches and discussion as to what they’re going to do next. It also appears, alas, that their entire family are fair game for this kind of exposure, as can be seen by the news that their younger child, Lilibet Diana, was christened in California on Friday 3 March.