Marianus I (died after 18 March 1082) was the

Judge of Logudoro The kings or ''judges'' (''iudices'' or ''judikes'') of Logudoro (or Torres) were the local rulers of the ''locum de Torres'' or region (province) around Porto Torres, the chief northern port of Sardinia, during the Middle Ages. :''The identity, ...

from 1073, when he is first mentioned after his father or grandfather, Barisone I, until about 1082, when he is last mentioned. His reign is obscure and the next judge mentioned is his son

Constantine I Constantine I ( , ; la, Flavius Valerius Constantinus, ; ; 27 February 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337, the first one to Constantine the Great and Christianity, convert to Christiani ...

in 1112, but to ascribe to Marianus a 39-year reign seems unnecessary and the presence of unknown other judges between Marianus and Constantine is likely. In 1147, Marianus' grandson, Gonario II, made a donation of silver to the

Abbey of Montecassino An abbey is a type of monastery used by members of a religious order under the governance of an abbot or abbess. Abbeys provide a complex of buildings and land for religious activities, work, and housing of Christian monks and nuns. The conce ...

, citing his father and his grandfather as prior donors. Perhaps this Marianus was a different one from the one who received a letter from

Pope Gregory VII Pope Gregory VII ( la, Gregorius VII; 1015 – 25 May 1085), born Hildebrand of Sovana ( it, Ildebrando di Soana), was head of the Catholic Church and ruler of the Papal States from 22 April 1073 to his death in 1085. He is venerated as a saint ...

in 1073. Similarly, the ''Cronaca sarda'' makes Marianus the son of Andrew Tanca. The exact identity and relationships of this judge remain a matter of dispute. Not only did Marianus make a donation to Montecassino, but he benefited the local churches as well and paid an annual sum to the

papacy The pope ( la, papa, from el, πάππας, translit=pappas, 'father'), also known as supreme pontiff ( or ), Roman pontiff () or sovereign pontiff, is the bishop of Rome (or historically the patriarch of Rome), head of the worldwide Cathol ...

. He was an ally of the

Republic of Pisa The Republic of Pisa ( it, Repubblica di Pisa) was an independent state centered on the Tuscan city of Pisa, which existed from the 11th to the 15th century. It rose to become an economic powerhouse, a commercial center whose merchants dominated ...

Sources

*Manno, Giuseppe (1835).
Storia di Sardegna
'. P.M. Visaj. Judges (judikes) of Logudoro 11th-century Italian jurists {{Italy-noble-stub