Why was The Prince of Wales, during the NAPOLEONIC WARS, referred to as the "Dutch Bastard"?

Question

I had an historically interesting reply, but, this Prince of Wales would have been born in the 18th. century, not the 11th.

Answer 1

The Prince of Wales during the Napoleonic Wars was the man who would become King George IV (George Augustus Frederick) (12 August 1762 – 26 June 1830). He was king of the United Kingdom of Great Britain and Ireland and Hanover from 29 January 1820 until his death, although he had been prince regent for 11 years during his father's illness.
However, to the best of my knowledge, he was never referred to as the Dutch Bastard. I would have thought it was more likely a title for William of Orange, who was indeed, dutch.

Answer 2

I think Rac is right. The Prince of Orange was in England at that time and wore out his welcome.

Answer 3

because he was too a bastered