Name Alpharetta is a variation of a fictional Indian girl, Alfarata, from a popular 19th-century song, "The Blue Juniata," written by Marion Dix Sullivan – the first commercially successful song ever written by an American Woman In History Alpharetta traces its history to a tiny village named New Prospect Campground where Indians and white settlers traded goods. For a while, it was known as "The Town of Milton" and finally chartered as Alpharetta in 1858 Top Annual Events Taste of Alpharetta Best Kept Secret The 46-acre Autrey Mill Nature Preserve and Heritage Center with 1.5 miles of walking trails, picnic areas and historic sites is located in Alpharetta Don't Miss Mansell House & Gardens maintained by the Alpharetta Historical Society