Callinicus , the praepositus sacri cubiculi, seems to have been the only witness to his dying moments, and later claimed that Justinian had designated "Justin, Vigilantia's son" as his heir in a deathbed decision.
Callinicus (pl), Praepositus sacri cubiculi, tampaknya menjadi satu-satunya saksi menjelang ajalnya, dan kemudian menyatakan bahwa Yustinianus telah menunjuk "putra Yustinus, Vigilantia" sebagai pewarisnya di ranjang kematiannya.