The Augustus Primaporta, named for the famous example found at his wife Livia's villa at Primaporta, was the first emperor's most widely depicted portrait type. The court-approved likeness marries Greek 5th century B.C. classical ideals of proportional harmony, symmetry, youth and beauty to subtle physiognomic traits of the princeps. Therefore creating, according to Zanker, (The Power of Images in the Age of Augustus, p. 99), what was considered the "visual equivalent of the title 'Augustus'." Both the title and the portrait type were thought to be introduced in 27 B.C. See Kleiner, Roman Sculpture, pp. 61-69 and Zanker, op cit., pp. 98-100.