Answer:
The title of John Middleton Clayton was Lawyer
Explanation:
John Middleton Clayton was an American Lawyer that was one of the persons responsable for "The Clayton–Bulwer Treaty" .
This treaty was negotiated in 1850 between US and Great Britain, John Clayton negotiate with Sir Henry Lytton Bulwer from Great Britain three main provisions:
The canal was never built but the treaty was in effect until 1901.