It’s common today to speak of building one’s brand—everyone from world leaders to precocious teens are worried about their image, shaping their personalities online, creating a persona that straddles reality and the imagined. For the Medici family, the 16th-century rulers of Florence and Tuscany and patrons of some of the most famous Renaissance artwork, the tools to accomplish this were very different from those of today. However, the objective was the same. Wesleyan's Davison Arts Center (DAC) is participating in an exhibition at the Metropolitan Museum of Art called “The Medici: Portraits and Politics, 1512-1570,” currently on display through October…