NEW ORLEANS — For the past 50 years, Patti Gallagher Mansfield has kept the Champion Wiremaster stenographer’s notebook, 5-by-8 inches, safely tucked away among her most cherished, sacred items in her dresser drawer.

The notebook has 80 ruled pages. It cost 25 cents. One was given to each of the 25 students from Duquesne University and La Roche College who attended a weekend retreat in February 1967 at The Ark and The Dove Retreat House just outside of Pittsburgh.

Between the slightly faded, tan covers are page after page of Mansfield’s handwritten reflections in blue ballpoint pen of the mysterious things that happened on that three-day retreat, a weekend that ultimately changed the course of the Catholic Church worldwide.

“Who would have ever imagined — 80 pages, Patti Gallagher — that what I would record in this notebook would have any significance to over 120 million Catholics all over the world?” Mansfield, now 70, said. “It is amazing.”

The weekend — now called the “Duquesne Weekend” — is acknowledged as the birth of the Catholic Charismatic Renewal movement in the United States, which has spread throughout the world. The Charismatic Renewal centers on the “baptism of the Holy Spirit” in which God’s Spirit renews and fills a person with grace. Mansfield talks about releasing the graces already conferred through baptism and confirmation.

“As far as I know, there were individual Catholics who had been baptized in the Spirit,” said Mansfield, who added the Duquesne Weekend was the first known case in which a group had “a common experience” that then spread quickly to college campuses, rectories, hospitals and parishes across the country.

“That could not have happened unless the Lord were behind it and that he willed for this grace of being baptized in the Holy Spirit to become more widely experienced by the whole church,” she said.

She made the comments in an interview with the Clarion Herald, the New Orleans archdiocesan newspaper, in advance of the movement’s golden anniversary celebration, held Feb. 17-19 in the same retreat house chapel in Gibsonia, Pennsylvania.

Mansfield, who was a 20-year-old Duquesne junior in 1967, and her husband, Al, now serve as liaisons for the Charismatic Renewal in the Archdiocese of New Orleans.

While at Duquesne, she had been a regular member of a Bible study group, and there was talk from two professors who had attended an interfaith prayer meeting a few weeks earlier that they had received baptism in the Holy Spirit.

The professors suggested a new name for the students’ upcoming retreat — “The Holy Spirit” — and asked the group to read “The Cross and the Switchblade,” a 1962 book by pastor David Wilkerson about his ministry to youth drug gangs, and the first four chapters of the Acts of the Apostles.

Mansfield recalled hearing a presentation about surrendering her life to Jesus that prompted her to write: “Jesus, be real for me!” She tore out a page from her notebook and posted a message on the bulletin board: “I want a miracle!”

That night, two members of the group were supposed to celebrate their birthdays with a party, but “there was a listlessness in the group,” Mansfield recalled. She went upstairs to the chapel, now called the Upper Room, to pray. She remembers giving her life to God.

“I’m grateful I wrote everything down,” Mansfield said. “It’s not like I remember everything that was said, but I remember how I felt. I remember feeling like my body was on fire. I asked the priest (on the retreat), ‘Who should I tell?’ and he said, ‘The Lord will show you.'”

Two female students from La Roche College approached Mansfield, and one of them asked, “What happened to you? Your face looks different.”

“Well,” Mansfield told them, “I’ve experienced what we’ve been talking about.”

Mansfield said she led the women to the front of the chapel and said, “Lord, whatever you did for me, do for them.”

Mansfield said she remembered hearing one of her professors say, “What’s the bishop going to say when he hears that all these kids have been baptized in the Holy Spirit?”

Mansfield said the Charismatic Renewal has always been and will always remain at the center of the church. She said after the Duquesne Weekend, her study of the Scriptures and the documents of the Second Vatican Council — especially the footnotes on the Holy Spirit in “Lumen Gentium” (Dogmatic Constitution on the Church) — convinced her that the movement was within the church.

“I was determined that if what I experienced was not OK with the Catholic Church, I would deny having had such an experience,” she said. “I remember closing the documents and saying, ‘It’s OK. I can be a daughter of the church.’ One of my roommates told me, ‘Gallagher, Gallagher, this whole thing scares me to death. I’m afraid you’re going to leave the church.’ Of course, I felt like I was discovering the church.”

Within months, news of the Duquesne Weekend spread to students attending the University of Notre Dame and Michigan State, Mansfield said. This was before the internet. It was mostly word of mouth, but Mansfield said one way of transmitting the news came through “carbon copies” of testimonies that were mailed out.

In June 2014, Mansfield joined hundreds of thousands of charismatics, across all denominations, in Rome’s Olympic Stadium and met with Pope Francis. “The Holy Father told us to remember that this grace was born ecumenical,” Mansfield said.

She will return to Rome June 1-4 for a worldwide charismatic conference and the celebration of Pentecost. Pope Francis will preside at a prayer service June 3, the eve of Pentecost, at the Circus Maximus, a large outdoor oval that was the location of chariot races and other mass entertainment in ancient Rome.

“One of my friends asked me, ‘How do you feel when you think that something that happened to you on that retreat in that Upper Room chapel has affected millions of people around the world?’ and I told him, ‘I try not to,'” Mansfield said. “If I dwelled on it, it would be so overwhelming that I couldn’t function or I could be tempted to feel proud or important, and I surely don’t want to do that. I’m just a housewife, momma and grandma coming from Louisiana. How did I get into this stuff?”

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Finney is executive editor/general manager of the Clarion Herald, newspaper of the Archdiocese of New Orleans.