Conversation so far:
Tell me something interesting about Henry Paget, 1st Marquess of Anglesey's later career?
Paget's supported the proceedings against Queen Caroline, alleging her infidelity, which made him for a time unpopular.
What happened after Henry Paget, 1st Marquess of Anglesey supported the proceedings against Queen Caroline?
At the coronation of George IV in July 1821, Henry Paget, 1st Marquess of Anglesey acted as Lord High Steward of England.

Question: was he in the government of George IV?
Self-contained rewrite: Was Henry Paget, 1st Marquess of Anglesey in the government of George IV?