In history, does the son of a baron or a marquis became a baron or a marquis aft

Question: In history, does the son of a baron or a marquis became a baron or a marquis after the death of the father!?

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That's the hereditary principle, yes!.Www@QuestionHome@Com

Yes, but only the oldest son born in wedlock!. If the oldest son died, the next would inherit title and land!.Www@QuestionHome@Com