Guido de Summa (died 1151) was an Italian

Cardinal Cardinal or The Cardinal may refer to: Animals * Cardinal (bird) or Cardinalidae, a family of North and South American birds **''Cardinalis'', genus of cardinal in the family Cardinalidae **''Cardinalis cardinalis'', or northern cardinal, the ...

. He was born in

Milan Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city h ...

. Probably he was already a Cardinal-Deacon under Pope Innocent II and as such, he signed papal bulls between 12 January 1142 and 9 December 1143. Certainly

Pope Celestine II Pope Celestine II ( la, Caelestinus II; died 8 March 1144), born Guido di Castello,Thomas, pg. 91 was head of the Catholic Church and ruler of the Papal States from 26 September 1143 to his death in 1144. Early life Guido di Castello, possibly ...

named him Cardinal-Priest of S. Lorenzo in Damaso in the consistory celebrated on 17 December 1143. He subscribed the papal bulls as Cardinal-Prest between 28 December 1143 and 6 May 1149 and participated in the

papal election, 1144 The 1144 papal election followed the death of Pope Celestine II and resulted in the election of Pope Lucius II. Election of Lucius II Pope Celestine II died on 8 March 1144 at Rome, after a pontificate of only five months. The election of his su ...

and

papal election, 1145 The 1145 papal election followed the death of Pope Lucius II and resulted in the election of Pope Eugene III, the first pope of the Order of Cistercians. Election of Eugene III Pope Lucius II, during the whole of his pontificate, had to face the ...

. On 23 September 1149

Eugenius III Pope Eugene III ( la, Eugenius III; c. 1080 – 8 July 1153), born Bernardo Pignatelli, or possibly Paganelli, called Bernardo da Pisa, was head of the Catholic Church and ruler of the Papal States from 15 February 1145 to his death in 1153. He w ...

consecrated him

Bishop of Ostia The Roman Catholic Suburbicarian Diocese of Ostia is an ecclesiastical territory located within the Metropolitan City of Rome in Italy. It is one of the seven suburbicarian dioceses. The incumbent Bishop is cardinal Giovanni Battista Re. Since 11 ...

; as such, he signed papal bulls from 6 November 1149 until 14 April 1150. For many years he acted as papal legate in Lombardy. He is attested for the last time in the document issued in Ferentino on 10 May 1151.

Bibliography

*Johannes M. Brixius, ''Die Mitglieder des Kardinalkollegiums von 1130-1181'', Berlin 1912, p. 49-50 no. 4 12th-century Italian cardinals Cardinal-bishops of Ostia 1151 deaths Year of birth unknown Clergy from Milan {{Catholic-Church-stub