His origins are unknown, although its name suggests it belonged to an aristocratic Roman families of Decii and of the Anicii: it is likely that he was the grandson of the consul of 480, Caecina Decius Maximus Basilius, and perhaps he was the son of the consul of 493, Albinus.
While Simplicius still lived, the praetorian prefect, Caecina Decius Maximus Basilius, called together the Roman Senate, Roman clergy, and the leading local bishops in the Imperial Mausoleum.
Circus Maximus | Valerius Maximus | Pontifex Maximus | Temple of Jupiter Optimus Maximus | Quintus Fabius Maximus | Magnus Maximus | Pecten maximus | Flattus Maximus | Decius (gens) | Decius | ''Caecina Paetus | Caecina Decius Maximus Basilius | Steroid Maximus | Spurius Carvilius Maximus | Quintus Fabius Maximus (consul 45 BC) | Optimus Maximus keyboard | National Lampoon's 301: The Legend of Awesomest Maximus | Maximus of Moesia | Maximus of Jerusalem | Maximus | Limax maximus | Gluteus maximus muscle | Gellius Maximus | Fabius Maximus | Decumanus Maximus | decumanus maximus | Decius Wadsworth (Colonel) | Decius Wadsworth | Decius Mus | Clianthus maximus |