The time of Christ's birth celebrations in 1515 were trials for the queens of England and France. They were both too far along in their respective pregnancies to truly get comfortable no matter what they were doing, evening 'relaxing' didn't help; the babes were too active. Both women were privately convinced they were having boys. Mary had the added worry of keeping Louis on his diet and activity restrictions. If he had a repeat of the incident of last year, he might die before the birth and she wasn't so sure that Francis might not be above ensuring a son (or even a daughter) might not survive until christening. (Louis was sure of Francis, Marie was not.) Thankfully, he was so looking forward to 'the dauphin's' birth, that he obeyed his restrictions diligently. The celebrations were slightly pared back due to Marie's condition and Louis' health, but hardly anyone noticed: Francis was taking the lead in the festivities and his mother had no problem helping him.
Henry the Eighth was Henry the Eighth during this time. Katherine was only half surprised that Henry's 'present' to Charles Brandon was the Dukedom of Suffolk. Henry was trying to play matchmaker with his favorite courtier and the Archduchess Margaret of Austria, despite Brandon's betrothal to Elizabeth Grey. She mentally shook her head and thought to herself that he was going to get Charles in trouble with the Emperor and the English. Her adopted countrymen's attitude to this sort of advancement (unless it was happening to them) was not as welcoming as it might be. Then important thing was that the time was as peaceful as they'd both privately wished.
On January 10th, Prince Henry of England became Prince Henry, Prince of Wales in a flurry of celebrations. Hal behaved impeccably, making both parents proud. Four days later, Hal was a cousin. Marie gave birth to Charles Louis (named by his father without consulting the queen), a lad so hale and hearty his mother was surprised. Louis, was proud and considered the boy's rude health his reward (probably for following all the restrictions that had been put upon him by doctors).
Henry sent Thomas Boleyn to represent the English king at the christening of the lad. He was accompanied by his wife and caught up with his daughters there. The eldest, Mary, was to come home (Francis was showing what was, to her family and Queens Katherine and Mary, more attentions than he should) after the event. Boleyn was looking to secure her in marriage upon their return to England. When the Boleyns left France, Louis and Mary gifted her with cloth for a wedding gown and trousseau. Queen Marie made a personal gift to Mary of a sapphire and diamond necklace and bracelet. All that was left was to find their eldest a groom.
Princess Mary Katherine made her appearance on February 15. She was supposed to have been named Elizabeth (Henry's choice), but the newly-created Prince of Wales wanted to know why, if Father named him and Mother named John, why couldn't HE name the new baby. Feeling magnanimous (and sure that Hal would 'side' with his father), Henry told him to pick a name. And Hal did. Mary for his aunt the Queen of France and Katherine for his mum. Henry was just glad the boy hadn't picked Katherine's choice of Isabella.