He (Geta) and his brother (Caracalla, the remaining child - not a nice fellow) were not friends, and constantly tried to assassinate one another when they were older. Caracalla eventually succeeded, and after doing so, passed damnatio memoriae, a modern term we use for the total erasure or defacement of all symbols of a person that Rome sometimes engaged in. Coins with Geta’s face were reminted or disfigured, statues torn down - and paintings, like this, even of Geta as a child, selectively edited.