Danica McKellar revealed in an interview that temperature on day of filming snow angels was eighty degrees. All of the snow in Romania was fake.
Allie's explaining fractions to Theodora using cookie pieces is a reference to Danica McKellar, who is a mathematician, having written a series of children's books on math.
When Ally and Theodora are walking back from the greenhouse holding jars of worms, Ally says to Theodora that her worm looks like an Ellie. The actress playing the young Princess Theodora's real name is Ellie.
The horse that is the King's is a Friesian.
Starz has cast two different actors from Hallmark Channel movies into key characters in their television shows : Rupert Penry-Jones as Thomas Hamilton in Black Sails (2014) (he starred in this movie) and Sam Heughan in Outlander (2014) (he starred in A Princess for Christmas (2011). One played a king who marries an American governess from Brooklyn , the other played a Prince who marries his sister-in-law from Buffalo, who is the guardian of his niece and nephew.