His consulships occurred during a time in which Rome was reasserting itself following its defeat at the hands of the Gauls in the Battle of the Allia of 387 BC.
The object of the patricians was to secure both places in the consulship for their own order again, which was effected by Ambustus, who seems to have returned to Rome in the meantime.
[6] There is some disagreement between scholars over whether he ever served as censor, possibly in 358, and as princeps senatus later in life (the two questions are connected, as all principes prior to 209 BC were censorii).
[7] He was alive in 325, when his son, Quintus Fabius Maximus Rullianus, was Master of the Horse to Lucius Papirius Cursor, and fled to Rome to implore protection from the vengeance of the dictator.
[8] He was also father of Marcus Fabius Ambustus, who also served as Master of the Horse.