tv/ movies: who was the only actor to become president of the u s?

Questions

Fredcrick the First, 1657 to 1713, was the first king of which country?

The Portuguese capital, Lisbon, stands on which river?

Which Latin phrase translates into English as 'peace be with you'?

Lee Marvin won his only Best Actor Oscar for the dual role of Kid Sheleen and Tim Strawn in which film?

What is the literal English translation of the French phrase 'cordon bleu'?