::Have dealt with the first two points of the original post"but Caesar was known" and "Caesar's Ninth Legion"  For the first of these the Caesar referred to is the Caesar of the Civil War, Gaius Julius Caesar, and so the reference put in to Julius Caesar and linked to the appropriate article.  Since the paragraph immediately below, "Caesar's Ninth Legion" refers to the material immediately above, the change "The Caesarian Ninth Legion" seemed sufficient to clarify.  The other two points need no further clarification once the link was made.