My guesses:
For a girl: Alice Kristina Marie (Alice was name of Silvia's mother, Kristina is Sofia's second name, Marie - Marie Hellqvist).
For a boy: Folke Edmund Sigvard (Folke - Folke Bernadotte, Edmund - one of Carl Philip's names, Sigvard - Prince Sigvard).
Provinces: Norrbotten or Närke...