Montecristo was made famous by the French novelist Alexandre Dumas in his classic The Count of Monte Cristo, a story of revenge, honour and buried treasure.
Mamilian of Palermo spent time on the island of Montecristo in the  fifth century, and constructed a monastery on the island.

Il duomo di Sovana, tomba di San Mamiliano [1]

Saint Mamilian (Mamilianus) of Palermo, who is venerated with Nympha (Ninfa), Eustotius (Eustozio), Proculus (Proculo, Procuro), and Golbodeus (Golbodeo, Golbudeo), was a bishop of Palermo of the fifth century.[1] Mamilian lived in Sicily at a time when the Vandals dominated the island.[1] He served as bishop of Palermo but was exiled to Africa by the Vandals, who adhered to Arianism, around 450 AD with some Christian companions.[1] One source states that Mamilian was exiled to Tuscany by Genseric, the Vandal king.[2]

However, through the intercession of an African bishop or by some sympathetic Christians, he escaped to Sardinia.[1] After that, he spent time on the island of Montecristo. According to a legend on Montecristo, Mamilian defeated a dragon on the island, and also changed the island’s name from Montegiove ("Jove's Mountain") to Montecristo ("Christ's Mountain").[3] A community of hermits, said to have been Mamilian’s followers, lived on the island, and around 600 AD, a monastery was built.[3]

He subsequently went also to the island of Giglio, where he died.[1]

Golbodeus’s name may a be a corruption of Quodvultdeus, a name shared by another 5th-century saint.[4]

Veneration

According to a tradition on Giglio, inhabitants of Elba and Genoa attempted to steal Mamilian’s relics on the very day of his burial[5] and the saint’s body was torn to pieces. The island of Giglio kept the saint’s arm.[5]

Some sources say Mamilian's relics were translated to Rome, to the Church of Santa Maria in Monticelli, and subsequently to Spoleto.[1] Some of his relics may have been taken to Palermo.[2] Another tradition states that Cosimo III de' Medici, Grand Duke of Tuscany returned Mamilian’s entire body to Giglio in the 17th century.[5]

On the island of Giglio, celebrations dedicated to Saint Mamilian start on September 15 and last for four days, consisting of a process of his relics (Mamilian’s arm), games, music, and a traditional mass.[5]

In 1673, Archbishop Juan Lozano of Palermo erected statues to Mamilian, Eustotius, Proculus, and Golbodeus in the cathedral of Palermo.[6] The statues were made by Travaglia (Mamilian, Golbodeus) and Antonio Anello (Eustotius, Proculus).[6]

References

1.  Antonino Cottone (2003). "San Mamiliano di Palermo". Santi e beati. Retrieved January 15, 2012.
2.  "St. Patrick Catholic Church: Saint of the Day". St. Patrick Catholic Church. Retrieved January 15, 2012.
3.  "Montecristo Island". Toscana Viva. Retrieved January 15, 2012.
4.  Recueil des notices et mémoires de la Société archéologique du département de Constantine, Volumes 26-27. Société archéologique du département de Constantine (L. Arnolet, 1892), 17.
5. "San Mamiliano". Isola del Giglio. Retrieved January 17, 2012.
6. George Dennis, John Murray, A handbook for travellers in Sicily: including Palermo, Messina, Catania, Syracuse, Etna, and the ruins of the Greek temples (J. Murray, 1864), 25.

Bibliography

Michele Marinelli, San Mamiliano Monaco Vescovo di Palermo, Grosseto 2000

Ugo Russo, San Mamiliano Vescovo e Martire del V secolo, evangelizzatore della Toscana, supporto CD, Palermo, 2002

Gloria Peria e Silvestre Ferruzzi, L'isola d'Elba e il culto di San Mamiliano, Portoferraio 2010