Publia Fulvia Plautilla was the wife of the Roman emperor Caracalla, her paternal second cousin. After her father was condemned for treason, she was exiled and eventually killed, possibly on Caracalla
Bust of Plautilla, Museo Nazionale Romano.
Fulvia Plautilla on a denarius.
The Severan Tondo or Berlin Tondo is a circular wooden panel portraying the Roman emperor Septimius Severus with his wife, the augusta Julia Domna, and their two sons and co-augusti Caracalla and Geta
Another example of dynastic portraits on an aureus of Septimius Severus, minted in 202. The reverse feature the portraits of Geta (right), Julia Domna (centre), and Caracalla (left).
Another image of the tondo, better for detail