Puzzle filippino №447318

Whether my original name derived from the Greek word, “pitta,” which means “pie”; from the Langobardic word “bizzo,” which means “bite.”; or from the a Latin word "pinsa", which means flat bread. All I do know is that the oldest know use of the name for my pie shaped, doughy goodness, smothered in cheese and sauce, was recorded in a Latin text from 997 AD in Gaeta, Italy. The text states that a tenant of certain property must give the bishop of Gaeta 12 of me every Christmas Day and 12 more every Easter Sunday.