Quintus was the son of Marcus Flaccus but his mother is unknown. The date and place of his birth have not been found.
His wife was Sulpicia of Rome. They were married, but the date and place have not been found. Their only known child was Marcus I Flaccus (?-?).
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | FROM 0238 B.C. TO 0209 B.C. | consul of Rome |