Monaxius
Sources

Preceded by Imp. Caesar Fl. Honorius Augustus XII, Imp. Caesar Fl. Theodosius Augustus VIII
Consul of the Roman Empire 419 with Fl. Plinta
Succeeded by Imp. Caesar Fl. Theodosius Augustus IX, Fl. Constantius III
Preceded by Fl. Anthemius
Praetorian prefect of the East 10 May - 30 November 414
Succeeded by Aurelianus
Preceded by Aurelianus
Praetorian prefect of the East 26 August 416 - 27 May 420
Succeeded by Fl. Eustathius
Preceded by Aemilianus
Praefectus urbi of Constantinople 17 January 408 - 26 April 409
Succeeded by Anthemius Isidorus

Question: When was Monaxius praetorian prefect of the East?
Answer: Monaxius was praetorian prefect of the East between 10 May and 30 November 414 and also between 26 August 416 and 27 May 420.