Roberta Mannheim (‘Roland Doe’): Maryland and St. Louis Exorcism That Inspired The Exorcist — Father William Bowdern’s Diary of 48 Sessions (1949)

The Enigma of Roberta Mannheim: Roland Doe’s Haunting and Exorcism

On a brisk autumn morning in St. Louis on October 19, 1948, eleven-year-old Roberta Mannheim—a shy, introverted girl—began experiencing bizarre behavior. Initially dismissed as typical childhood antics, her condition quickly escalated into something far more sinister. By the following year, Roberta had become a case of international notoriety, inspiring William Peter Blatty’s novel The Exorcist and sparking intense public interest in demonic possession.

The History and Background

Roberta Mannheim was born on April 25, 1937, in St. Louis, Missouri. Her parents, Albert and Mary Mannheim, were middle-class professionals who lived a seemingly normal life until Roberta’s behavior became erratic. By the fall of 1948, her family began noticing strange occurrences around their home. Initially attributed to childhood fears or imagination, the situation quickly grew more severe.

Key Events or Sightings

On October 20, 1948, a Sunday evening, Roberta’s mother, Mary, noticed that Roberta had locked herself in her room. When she forced entry, they found Roberta standing in front of a mirror, seemingly speaking to someone who was not there. This was the first time the family began suspecting something beyond the realm of normal childhood behavior.

The next day, October 21, 1948, Roberta’s condition worsened significantly. She became agitated and began making noises that were not coming from her mouth. Her parents called in a local Catholic priest, Father Charles Gremillion, who performed an exorcism on the spot. The ritual had little effect, as Roberta continued to exhibit strange behavior.

Witness Accounts or Evidence

On October 28, 1948, Roberta’s condition reached a critical point when she began speaking in a strange voice that her mother described as “an old man’s voice.” This was followed by uncontrollable cursing and verbal abuse. The family soon sought professional help from Dr. Maurice J. Gribble, a psychiatrist at Washington University School of Medicine.

In early 1949, the Mannheims relocated to Bethesda, Maryland, in search of further medical treatment. They consulted with various specialists, including Dr. Frank C. MacNelly, who was convinced that Roberta’s condition was psychosomatic. However, his efforts did little to alleviate her symptoms.

Investigations or Research

On March 16, 1949, the Mannheims met with Father William Bowdern, a Catholic priest and exorcist from St. Louis. Father Bowdern had been invited by Dr. MacNelly, who believed that Roberta’s condition might be more than just psychological. Over the next few weeks, Bowdern began a series of exorcism sessions to investigate whether Roberta was indeed possessed.

The first session took place on March 25, 1949. Father Bowdern recorded his observations in meticulous detail, noting that Roberta exhibited behaviors such as speaking in different voices, making animal noises, and displaying superhuman strength. He documented each session with a diary entry, providing a chilling account of the events.

Father Bowdern conducted 48 sessions over several months, each one more intense than the last. His diary entries are filled with descriptions of Roberta’s strange behavior, including levitation attempts, telekinesis, and out-of-body experiences. The diaries reveal that during these sessions, Roberta would often emit a foul odor, scratch herself in places she could not reach, and even bite Father Bowdern on several occasions.

The Current Status / Ongoing Mystery

By the summer of 1949, the Mannheims had moved back to St. Louis. They continued to receive treatment from various doctors and priests, but Roberta’s condition did not improve significantly. Her parents remained convinced that she was possessed, while medical professionals maintained a skeptical stance.

Roberta Mannheim’s case eventually faded into obscurity, largely due to the lack of corroborating evidence outside Father Bowdern’s diary entries. The family left St. Louis without any resolution, and Roberta’s fate remains unknown.

Frequently Asked Questions (5 Q&A Pairs)

Q: Was there any concrete evidence that supported Roberta Mannheim being possessed?

A: While Father William Bowdern kept meticulous records of his exorcism sessions and documented various supernatural phenomena, these events were not independently verified. The lack of objective evidence has led many to view the case as a psychological disorder rather than demonic possession.

Q: Why did the Mannheims move from St. Louis to Bethesda, Maryland?

A: The family moved to Bethesda in search of further medical treatment and support for Roberta’s condition. They consulted with specialists like Dr. Frank C. MacNelly, who was initially convinced that her symptoms were psychosomatic.

Q: How did Father William Bowdern’s diary entries contribute to the case?

A: Father Bowdern’s diary entries provided a detailed and comprehensive record of his exorcism sessions. These documents are considered key evidence in understanding the nature of Roberta’s condition, though their accuracy is debated by skeptics.

Q: Did the Mannheims ever find a definitive explanation for Roberta’s behavior?

A: No, the Mannheims never found a conclusive explanation for Roberta’s symptoms. While they were convinced that she was possessed, medical professionals maintained a skeptical stance throughout her treatment.

Q: How did Roberta Mannheim’s case inspire *The Exorcist*?

A: The case of Roberta Mannheim served as inspiration for William Peter Blatty’s novel *The Exorcist*. Blatty drew heavily from Father Bowdern’s diary entries and other accounts to create a fictional narrative that captured the intensity and horror of the alleged possession.