'Mihi nomen est Calpurnia Valeria, sed cum ego natus eram dicitur Sextus, sexta vivum puerum parentes mei, et in tantum puer.' ('My name is Calpurnia Valeria, but when I was born I was called Sextus, the sixth living child of my parents and the only boy.')

I read the neat Latin script on the roll of parchment a second time. No, there was no mistake, it said 'puer' (boy) not 'puella' (girl), and 'Sextus' not 'Sexta'.