The gens Petillia or Petilia was a plebeian family at ancient Rome. Members of this gens first appear in history at the beginning of the second century BC, and the first to obtain the consulship was Quintus Petillius Spurinus in 176 BC.[1]
^Dictionary of Greek and Roman Biography and Mythology, vol. III, p. 212 ("Petillia or Petilia Gens").