Sentence 1: John Marshall Clemens ( August 11 , 1798 -- March 24 , 1847 ) was the father of the author Mark Twain .
Sentence 2: John Marshall Clemens ( August 11 , 1798 -- March 24 , 1847 ) was the father of author Mark Twain .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?