Born on December 29, 1882 at Sant’Elpidio a Mare, Marche, from Luigi and Luigia Corradini, he was the second of six children and entered our Order on October 24, 1897 in Anagni where he did his novitiate and took the Simple Vows on January 22, 1899. He went to Rome for his Philosophical and Theological studies at the Saint Thomas College (Angelicum), and always in Rome, made the Solemn Profession on June 8, 1906 in San Lorenzo in Lucina and was ordained a priest on December 24, 1906. He remained in Rome for a few years and worked mainly among young people.
Called to arms, he took part in the World War I (1915/18); after the war he returned to Rome where he remained till 1920 when his superiors asked him to go as Pastor to Sanginesio: one of the oldest foundations of the Order. He remained there till 1927 during which time he endeared him- self to the affection of the population of Sanginesio and neighboring towns. The young people of those towns would remember him, even after many years he had left the area, in how quickly he would run to the bed of the sick, to the house of the poor, to play with his altar boys and in the evening, after an intense day of work, remain for a time before the Blessed Sacrament to pray for himself and for others.
Meanwhile the Clerics Regular Minor for several years had been carrying the apostolate in Rome in the neighborhood of Montesacro, and when in 1927 their labors were rewarded with the erection of the Parish of the Holy Guardian Angels, Father Guglielmo was elected its Pastor. The vast field entrusted to his care did not scare him at all; he, in the vigor of his young years and in the ardor of his zeal for the Lord and for souls, backed by his brave religious confreres, went to work so that to the extraordinary building and demographic development of the zone would corre- spond an extraordinarydevelopment of Christian life as well.
Despite the adverse political conditions of the time, he was able to start many Catholic asso- ciations in the parish, such as the Catholic Action, the Daughters of Mary, the Paggetti of the Blessed Sacrament, the Charitable Associations, the Choir, etc…activities which show how serious he had taken the expectations of his superiors. Through the years he embellished the church with new appointments and encouraged people to celebrate with ever more solemnity the feast of Our Lady of Mercy, the Patroness of Montesacro.
On the occasion of his 25th Anniversary, he recommended to his parishioners “not to focus on his person but on the Real Pastor of Souls, the Priest Jesus Christ”, who calls us to come together and worship the Father, and, as a practical thing to do, he suggested to raise funds for the installa- tions of bells which were not included in the construction of the new church, but which toll and summon people to church. The parishioners acceded to his wishes, the bells were in place for Christmas 1931, but many people also honored Father Guglielmo with a great banquet, suggested by him, and open to about 230 needy families of the zone. The meals were served by parishioners with the participation of the Princess Caracciolo of Avellino, the Count Mario Caracciolo and his wife of Fiorino and the Duchess d’Acquara.
After these celebrations the mutual affection of the Pastor and his Parishioners became deeper and more engaging. The life of the Parish was the life of the Pastor. In 1935 the zeal of Father Guglielmo and his confreres toward the Blessed Sacrament received a great recognition: the parish was chosen for the XII Diocesan Eucharistic Congress. It was a great occasion to show to the entire city of Rome the love of the inhabitants of Montesacro and of its priests for Jesus Eu- charist. The newspapers of the time reported that the Solemn Procession of Corpus Christi was truly grandiose. A large number of priests and clerics took part and the monstrance was carried through the streets by Cardinal Marchetti-Selvaggiani, the Vicar of His Holiness Pope Pius XI. Everything was concluded with the Solemn Benediction over the immense gathering of the faith- ful in Piazza Sempione.
As years came and went, and another World War was fought, Father Guglielmo doubled his efforts in offering consolation to mothers whose sons had been called to arms and to wives who, be- cause of the absence of the man, were having difficulty to survive. The years following the war were trying for everybody and the Pastor had to accompany his parishioners in the material, so- cial and spiritual reconstruction. In this work he always had the collaboration of his religious confreres, but he was the one who coordinated and directed the multiple parish initiatives, who recorded the newly baptized in the parish registers, who celebrated weddings, preached the word of God , and who received and consoled all in their material and spiritual needs.
Such efforts, made possible only by his great love for souls and his robust physical health, were noted and merited him public recognition. On June 27, 1959 at City Hall (in Campidoglio), the Mayor of Rome offered him and two other Roman Pastors a Gold Medal, a sign of appreciation from the whole Roman citizenry for more than thirty years of leadership and pasto- ral work.
In the years that followed, the superiors understandably gave some relief to his tacit request. They appointed a substitute. This even for the fact that his vision was getting weaker and weaker, so that he would often say, “the day of an old blind man is 25 hours long and they never pass …” With the eyes other physical ills began to take their toll.
He died, comforted by the Sacraments, on February 2, 1968 at the age of 86 on the day of the Purification of the Blessed Virgin Mary. The funeral was presided by Monsignor Terenzi, Dean of all priests of the Diocese of Rome, His Eminence Card. Dell’ Acqua, Vicar of Hs Holiness the Pope, also came to express condolences and appreciation. There were political and civic representatives and a large concourse of priests and people for the last farewell to a great Pastor. For the Clerics Regular Minor, who came from Anagni, Roccamontepiano, Naples and, of course Rome, they were saying goodbye to a fellow religious who had been an inspiration for them in the revival of the Order. He was laid to rest in the Order’s Tomb at the Verano Cemetery in Rome.