Question: Several ships have borne the name Duke of Clarence, named for one or another Duke of Clarence, originally Prince William, the first Duke of Clarence and St Andrews, who acceded to the throne as William IV of the United Kingdom, was King of the United Kingdom of Great Britain and Ireland and King of Hanover from 26 June 1830 until when?
Sentence (from "William IV of the United Kingdom"): The third son of George III and younger brother and successor to George IV, he was the last king and penultimate monarch of Britain's House of Hanover.
Relevant evidence: No