Atto of Pistoia

Atto of Pistoia (Portuguese: Santo Atão; 1070 – 22 May 1153) was a Portuguese Roman Catholic bishop and a professed member from the Vallumbrosan Order as well as the Bishop of Pistoia and a noted historiographer.

Saint Bishop


Bishop of Pistoia
Bernardino Poccetti e aiuti, affreschi della sagrestia di san bartolomeo di ripoli, 1585, fregio 08 beato atto vescovo (cropped).JPG
ChurchRoman Catholic Church
Term ended22 May 1153
PredecessorIldebrando Guidi
Consecrationc. 1133
Personal details
Birth nameAtto
Bornc. 1070
Beja, Portugal
Died22 May 1153 (aged 83)
Pistoia, Italy
Feast day
  • 22 May
  • 21 June (Pistoia)
Venerated inRoman Catholic Church
Canonized24 January 1605
Saint Peter's Basilica, Papal States
by Pope Clement VIII
  • Episcopal attire
  • Pastoral staff
  • Benedictine habit

He was born at Beja in the Portuguese region of Alentejo in 1070. He became Abbot of Vallombrosa (in Tuscany) in 1105,[1] and in 1135 was made Bishop of Pistoia, also in Tuscany. He wrote lives of John Gualbert and Bernard degli Uberti, bishop of Parma. In 1145 he transferred to Pistoia certain relics of the Apostle James the Great. His correspondence on that occasion is found in Ferdinando Ughelli, Italia sacra, VII, 296.[2]


  1. ^ Monks of Ramsgate. "Atho". Book of Saints, 1921. CatholicSaints.Info. 3 August 2012.  This article incorporates text from this source, which is in the public domain.
  2. ^ Shahan, Thomas. "Atto of Pistoia." The Catholic Encyclopedia Vol. 2. New York: Robert Appleton Company, 1907. 13 April 2020  This article incorporates text from this source, which is in the public domain.
  •   This article incorporates text from a publication now in the public domainHerbermann, Charles, ed. (1913). "Atto of Pistoia". Catholic Encyclopedia. New York: Robert Appleton Company.