Atto ( it, Attone) was a Cardinal of the Catholic Church who lived in the 11th century. Born in

Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus (legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...

as the son of a noble family. As a young man in 1062 he was elected by the chapter of the Milan cathedral

Archbishop of Milan The Archdiocese of Milan ( it, Arcidiocesi di Milano; la, Archidioecesis Mediolanensis) is a Latin Church ecclesiastical territory or archdiocese of the Catholic Church in Italy which covers the areas of Milan, Monza, Lecco and Varese. It has l ...

, Attone was elected archbishop in front of a

papal legate 300px, A woodcut showing Henry II of England greeting the pope's legate. A papal legate or apostolic legate (from the ancient Roman title ''legatus'') is a personal representative of the pope to foreign nations, or to some part of the Catholic ...

but the decision of the chapter of the cathedral didn't receive the ''placet'' of emperor Henry IV so he coundn't be enthroned. Attone was so forced to leave Milan and he reached Rome where he lived in the Church of San Marco is title as Cardinal. During his stay in Rome, Attone wrote a book about

canon law Canon law (from grc, κανών, , a 'straight measuring rod, ruler') is a set of ordinances and regulations made by ecclesiastical authority (church leadership) for the government of a Christian organization or church and its members. It is th ...

. In that book he supported the supremacy of the

bishop of Rome A bishop is an ordained clergy member who is entrusted with a position of authority and oversight in a religious institution. In Christianity, bishops are normally responsible for the governance of dioceses. The role or office of bishop is ca ...

over the civil authorities following the teaching of pope Gregory VII.From Enciclopedia Treccani The date of his death is unclear. For some authors the date of his death is around 1080, other authors identify him as a Cardinal Bishop of Palestrina, who dies after being excommunicated by pope Gregory VII after 1085.

References

{{DEFAULTSORT:Attone Year of birth unknown Year of death unknown 11th-century Italian Roman Catholic archbishops Clergy from Rome Investiture Controversy Archbishops of Milan