Richard Cromwell
Richard Cromwell was not suited to ruling the country.  He followed his father as ruler only because he was Oliver's oldest living son, and people expected one of Oliver's sons to follow him.  After a short time, he gave up power and he knew that many of the people wanted King Charles II to come back from Holland and rule the country.  When it was agreed that Charles would return, Richard thought it would be best for him to leave Britain, and he went to live in France for a while.  He changed his name to "John Clarke" and travelled around Europe, not returning home for twenty years.  When he came back, he lived quietly outside London for the rest of his life.