For ecclesiastical history, see Roman Catholic Diocese of Poggio Mirteto Poggio Mirteto was founded in the early thirteenth century in an area around some earlier small castles: previously in this area there had been some old Roman villas.
On 6 and 7 July 1849 Giuseppe Garibaldi, during his retreat from Rome with about 4,000 troops and his wife Anita, stopped in Poggio Mirteto: in Poggio Mirteto's main square there is a commemorative plaque in the building where Anita, which was pregnant, stayed during these days [REF].