True Williams was the first to illustrate which title character of a Mark Twain novel?
True Williams:  He drew all illustrations to the first edition of "The Adventures of Tom Sawyer" (1876) and was thus the first to illustrate such characters as Tom Sawyer and Huckleberry Finn. Tom Sawyer: Thomas "Tom" Sawyer is the title character of the Mark Twain novel "The Adventures of Tom Sawyer" (1876).
Thomas "Tom" Sawyer