Constantine the Great
Maximian and Constantine may have met at Augusta Treverorum (Trier, Germany) in 307, possibly in late summer. Maximian made Constantine augustus. Constantine married Maximian's daughter Fausta. (This could have been in late summer, September, or as late as 25 December. Historians are not in agreement about the date.) At the start of his reign, only the lands that Constantine controlled accepted Constantine as augustus. Then, the lands that Maximian's son Maxentius controlled also accepted that Constantine was an augustus.