Plutarch, Galba
Bernadotte Perrin, Ed.

28. A senate was at once convened. And as if they were now other men, or had other gods to swear by, they united in swearing an oath to support Otho—an oath which he himself had sworn in support of Galba, but had not kept. Moreover, they gave him the titles of Caesar and Augustus, while the dead bodies, all headless in their consular robes, were still strewn over the forum. [2] And as for the heads, when they had no further use for them, that of Vinius they sold to his daughter for twenty-five hundred drachmas; that of Piso was given to his wife Verania in answer to her prayers; and that of Galba was bestowed upon the servants of Patrobius. [3] They took it, and after heaping all manner of insult and outrage upon it, cast it into a place called Sessorium, where those under condemnation of the emperors are put to death. The body of Galba was taken up by Priscus Helvidius, with the permission of Otho; and it was buried at night by Argivus, a freed man.