Who is Evander from The Early History of Rome: Books I-V and what is their importance?

Evander appears early in the book, prior to the establishment of the city of Romulus. He is described as a powerful individual, more so by virtue of his personal influence than by direct political sovereignty.

Evander introduced a magnificent innovation to the region, which was, in fact, a set of letters...... an 'alphabet' which clearly set a precedent and held great potential. As a result, he is seen by some as the definition of what it means to be a scholar.