Cromwell was a Roundhead leader against the Royalists in the English Civil War, and became Lord Protector - effectively monarch and PM combined - after the execution of King Charles I in 1649.

and trusted by, The King throughout his exile in Bruges - his father, Charles I, was executed in 1649.

In 1649, King Charles I was put on trial for treason. He was found guilty and sentenced to death. Even though Charles had fought against Parliament, only 59 commissioners signed Charles’ death ...

For a moment, as a new King acceded to the throne, confusion reigned — over his name. The royal formerly known as Prince Charles was first described simply as "the King" in the fateful tweet ...

As he welcomed the leaders of Ukraine and Canada to his country estate this week, the king was sending a message to the world ...