Except for the Founding Fathers, who deliberately created a limited government with a Bill of Rights, and George Washington who, incredibly, turned down an offer of dictatorship.
Tecumseh, Malcolm X, Angela Merkel, Cincinnatus, Eisenhower, and Gandhi all come to mind.
George Washington was surely an exceptional leader but he isn't the only one.
Not parent, but I can think of one: Oliver Cromwell. He led the campaign to abolish the monarchy and execute King Charles I in what is now the UK. Predictably, he became the leader of the resulting republic. However, he declined to be crowned king when this was suggested by Parliament, as he objected to it on ideological grounds. He died from malaria the next year and the monarchy was restored anyway (with the son of Charles I as king).
He arguably wasn't as keen on republicanism as a concept as some of his contemporaries were, but it's quite something to turn down an offer to take the office of monarch!