Sentence 1: In 1767 , Heathcote published an anonymous letter to David Hume on the dispute between Horace Walpole and Jean-Jacques Rousseau , which was attributed to Walpole himself .
Sentence 2: In 1767 , Heathcote published an anonymous letter to Horace Walpole on the dispute between David Hume and Jean-Jacques Rousseau , who was attributed to Walpole himself .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?