Good heavens Stephen,
What a super find, would be most interested to see a close photograph of the painting if you took any, Victoria was fascinating and I would think very beautiful indeed as a princess, of course, had Princess Charlotte not died in child birth, there would never have been a Queen Victoria.
You ended up with a royal baby race as a result, with this absolute panic amongst the Prince Regents brothers to acquire both a legitimate wife and then a child, who would be heir to the throne of Great Britain.
The Duke of Kent was considered to be the best of them and whilst he had a mistress, he had already seen Princess Victoria of Saxe Coburg and fallen in love, so he made her an offer and she went for it, I feel a little bit sorry for her because of what she was letting herself in for!
The Duke of Kent was broke as far as money went so they initially set up home in Germany, but, as soon as Victoria was pregnant, there was the obvious need to show the establishment here in Great Britain that the child was legitimate by witnessing the actual birth.
They raced back to London and on the 24th of May 1819, Victoria gave birth to a daughter at Kensington Palace, she was described as a "pretty little princess, as plump as a partridge" but, when the Prince Regent found out his brother had produced an heir, he was not happy!
The christening was not without it's issues, the Prince Regent argued about the name of the new princess and would not allow any of the traditional family regal sounding names, it has been suggested that the Archbishop of Canterbury stood by the font with the princess waiting to be told what to call her, finally the Prince Regent said "give her the mothers name" and so the child became the first little girl in England to be named Victoria!
Moreover, that was merely just the start of all the other problems that were to blight little Princess Victoria, she really did have to fight very hard indeed to achieve her destiny and become Queen and Empress.
Great photograph Stephen, hope all is well down there,
Kind regards Frank