Falacer, or more fully dīvus pater falacer, was an ancient Italian god, according to Varro. Hartung is inclined to consider him an epithet of Jupiter, since falandum, according to Festus, was the Etruscan name for "heaven."
His name may appear in the name of the city of Falacrine (Latin: Falacrīnum or Phalacrīna).
References
Falacer Wikipedia(Text) CC BY-SA