CANBERRA, Australia (AP) — They both wanted children. They knew it was time. Meghan had ended her acting career and moved to Britain to be a full-time royal. Prince Harry had stepped down from the military and wanted to settle down.

Their marriage was a five-star glamour blowout: the spectacular Windsor Castle setting, the horse-drawn carriage on a warm spring day, the vintage Jaguar with the top down, the Hollywood A-listers mixing with real-life royalty.

And now comes the very welcome word that Harry and Meghan, the duchess of Sussex, are expecting their first child in the spring. It is the...