The Campagne and Maritime Province (Latin

Latin

Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 Campaniæ Maritimæque Provincia, Italian

Italian language

Italian is a Romance language spoken mainly in Europe: Italy, Switzerland, San Marino, Vatican City, by minorities in Malta, Monaco, Croatia, Slovenia, France, Libya, Eritrea, and Somalia, and by immigrant communities in the Americas and Australia...

 Provincia di Campagna e Marittima) was one of the seven province

Province

A province is a territorial unit, almost always an administrative division, within a country or state.-Etymology:The English word "province" is attested since about 1330 and derives from the 13th-century Old French "province," which itself comes from the Latin word "provincia," which referred to...

s of the Papal States

Papal States

The Papal State, State of the Church, or Pontifical States were among the major historical states of Italy from roughly the 6th century until the Italian peninsula was unified in 1861 by the Kingdom of Piedmont-Sardinia .The Papal States comprised territories under...

 from the 12th century to the end of the 18th.

The province was established by Pope Innocent III

Pope Innocent III

Pope Innocent III was Pope from 8 January 1198 until his death. His birth name was Lotario dei Conti di Segni, sometimes anglicised to Lothar of Segni....

 in the year 1186, with Frosinone

Frosinone

Frosinone is a town and comune in Lazio, central Italy, the administrative seat of the Province of Frosinone. It is located about 75 km south-east of Rome close to the Rome-Naples Autostrada A1...

 as its capital. Innocent's aim was to counter a tendency towards self-government in some of the towns in the south of his domains, such as Alatri

Alatri

Alatri is a town and comune of province of Frosinone in the Italian region of the Lazio, with c. 30,000 inhabitants. A part of the traditional region of Ciociaria, it is famous for its megalithic acropolis.-History:...

, Ferentino

Ferentino

Ferentino is a town and comune in Italy, in the province of Frosinone, Lazio, 65 km southeast of Rome.It is situated on a hill 400 m above sea-level, in the Monti Ernici area.-History:...

, Velletri

Velletri

Velletri is an Italian town of 53,298 inhabitants. It is a comune in the province of Rome, on the Alban Hills, in Lazio - Italy. It is bounded by other communes of Rocca di Papa, Lariano, Cisterna di Latina, Artena, Aprilia, Nemi, Genzano di Roma, Lanuvio...

 and Teracina, by installing a garrison

Garrison

Garrison is the collective term for a body of troops stationed in a particular location, originally to guard it, but now often simply using it as a home base....

 at Ferentino. Even before that the 'Roman Campagne and the Maritime Province' was part of the Patrimony of St Peter.

In 1357, the establishment of the province was confirmed by the Constitutiones Sanctæ Matris Ecclesiæ

Constitutiones Sanctæ Matris Ecclesiæ

The Constitutiones Sanctæ Matris Ecclesiæ , informally known as the Constitutiones Aegidianae , were six books of law which formed the first historic constitution of the Papal States...

.

The province was administered by a class of feudal 'Roman barons'.