A History of the British Monarchy/Commonwealth Rulers
The Commonwealth of England was a period of Interregnum (1649–1660), where there was no monarch recognized in England. It lasted from the execution of Charles I (Stewart) in 1649 to the restoration of Charles II (Stewart) in 1660.
The head of the Commonwealth of England was called the Lord Protector.
Despite not being a monarch, the rule of the country was passed down from father to son.