His Holiness Pope Sylvester III (in Latin Silvester Tertius) is the Pope number 146 of the Catholic Church.
Juan was born in Roma, in the current country of Italy.
The Holy Father Sylvester III initiated his pontificate in the year 1045. He succeeded Pope Benedict IX. His papacy lasted for 0 years, ending during the year 1045. He was succeeded by Benedict IX, who would become the following bishop of Rome.