Ok this is really random I know, but I noticed it and it's the kind of random stuff that's been on these threads!
"The Queen, the Duke of Edinburgh, the Prince of Wales, the Duchess of Cornwall, the Duke and Duchess of Cambridge, Lady Jane Fellowes, Lady Sarah McCorquodale and Earl Spencer have been informed and are delighted with the news.
This must be the order that they spoke to people in. The royals are in rank order, as expected, but the Spencers are neither in rank order or age order.
In rank/title order they'd be Earl Spencer, Lady Sarah and then Lady Jane. Age wise it would be Lady Sarah, Lady Jane, then Earl Spencer.
Admittedly, I do need to get out more rather than noticing petty details in things!