Carlos Manuel Cecilio Rodríguez Santiago, also known as "Blessed Charlie" (November 22, 1918 – July 13, 1963), was a Catholic catechist and liturgist who was beatified by Pope John Paul II on April 29, 2001.

That same year, Rodríguez was enrolled to study at the Colegio Católico Notre Dame, attached to the parish church.

He returned to the family home and continued his high school studies as best he could while working as a clerk, finally receiving his diploma in May 1939.

Using articles on liturgical subjects he had translated and edited, he began publishing Liturgy and Christian Culture, which he dedicated innumerable hours.

[5] In 1946 Rodríguez enrolled at the University of Puerto Rico in Río Piedras, to pursue higher studies, where his brother José and sister Haydée were already UPR faculty members.

As his disciples grew in number, he moved into nearby Catholic University Center and organized another Liturgy Circle (later called the Círculo de Cultura Cristiana).

He advocated for active participation of the laity in prayer, the use of the vernacular, and – most significantly – the observance of his much loved Paschal Vigil in its proper nighttime setting, after centuries of having this service celebrated on the morning of Holy Saturday.

He expressed particular concern over the Easter vigil, saying that it had lost its ancient character as the focal night of the Christian year.

[2] On July 7, 1997, Pope John Paul II decreed Rodríguez's heroic sanctity and service in his life.

Pope John Paul II established the new method, in his apostolic constitution of January 25, 1983, Divinus Perfectionis Magister and by the cardinal Pietro Palazzini, Prefect of the Congregation for the Causes of Saints.