Anthemius married into Theodosian dynasty. This dynasty ruled the Eastern Roman Empire from 379 to 457 CE. Anthemius' wife was Aelia Marcia Euphemia, the daughter of Emperor Marcian. Through this marriage, Anthemius became a member of the imperial family and gained a claim to the throne.
Anthemius Superfan Quiz: 26 Questions to separate the real fans from the posers