Almost certainly named for U.S. President Grover Cleveland (1837-1908), the New Jersey native who was first elected to the White House in 1884 and began serving in March 1885. Cleveland Street was named in January 1886 on a tract owned by former L.A. mayor Prudent Beaudry and his brother Victor. Since the Beaudrys hailed from Montreal, Quebec instead of Cleveland, Ohio, and since they weren’t averse to adding a dash of Americana when it came to naming streets (e.g., Bunker Hill Avenue, Centennial Street), I think my “Grover Theory” is sound. P.S. Like President Cleveland himself, Prudent Beaudry was a Democrat.