Henry FitzRoy, 1st Duke of Richmond and Somerset, English politician, Lord Lieutenant of Ireland (died 1536)

Henry FitzRoy, Duke of Richmond and Somerset was the son of Henry VIII of England and his mistress Elizabeth Blount, and the only child born out of wedlock whom Henry acknowledged. He was the younger half-brother of Mary I, as well as the older half-brother of Elizabeth I and Edward VI. Through his mother, he was the elder half-brother of Elizabeth, George, and Robert Tailboys. His surname means "son of the king" in Norman French.

Lord Lieutenant of Ireland, or more formally Lieutenant General and General Governor of Ireland, was the title of the chief governor of Ireland from the Williamite Wars of 1690 until the Partition of Ireland in 1922. This spanned the Kingdom of Ireland (1541–1800) and the United Kingdom of Great Britain and Ireland (1801–1922). The office, under its various names, was often more generally known as the Viceroy, and his wife was known as the vicereine. The government of Ireland in practice was usually in the hands of the Lord Deputy up to the 17th century, and later of the Chief Secretary for Ireland.