ALGONA, Iowa - A 40-year-old loner who apparently killed six relatives before turning the gun on himself may have been enraged by the holiday attention showered on his sister and her three children, family friends said Thursday.

"Here he was living with his parents, kind of being the center of attention all the time, and then Marilyn and the kids came home," said state Sen. Berl Priebe, a close friend of the Dreesman family. "Who knows, but that might have pushed Robert over the edge."

John Dreesman, 79; his wife, Agnes, 74; Robert; the Dreesmans' daughter, Marilyn Chuang, 48; and her three children - Jason, 12, Jennifer, 11, and Joshua, 8 - were found shot to death at the Dreesman home Wednesday. Authorities believe Robert pulled the trigger.

"With his sister's children home from Hawaii, Grandma and Grandpa showered so much love on them. I think, maybe, Robert was sitting in the corner by himself and flipped out," said chiropractor S.A. Mueller, a friend of Robert Dreesman.

Authorities said they had some indication Robert Dreesman had undergone counseling for mental problems, but they weren't sure what the problems were, and said they found two weapons in the home.

Officials said the children, their mother and their grandparents apparently were gunned down in less than 30 seconds as they were sitting down to lunch.

"Most of the bodies were found in the dining room. Robert's was in the hallway outside the dining room," said Don Courtney, assistant Kossuth County attorney.

"The evidence we found at the scene indicates he did the shooting and he died of a self-inflicted gunshot wound," said Ron Makin, a Division of Criminal Investigation agent in charge of the probe of the slayings in this north-central Iowa community.

Makin said Robert Dreesman was a loner who recently moved back to Algona to live with his parents, and that investigators have many gaps in his past.

"We understand there is a rumor he had been married, or is married. We're trying to run that down," Makin said.

Madelyn Priebe, a family friend, said Dreesman was married for a few months to a woman from the Philippines but that the marriage was annulled three or four years ago. She said she could not remember the woman's name.

Molly MacDonald, editor of the Algona Upper Des Moines and Kossuth County Advance newspapers and a friend of the family, took exception to Mueller's comment that Robert Dreesman was neglected.

"He was not neglected. They were a very loving family," she said.

Friends said John Dreesman, who once ran a poultry business, was a wealthy investor who owned thousands of acres of farm land. He and his wife were prominent in civic affairs.

MacDonald notified police that something might be wrong at the Dreesman home after her daughter reported no one there when she tried to visit.

MacDonald described Robert Dreesman as "a troubled boy and a troubled man."

"Perhaps Robert's view was distorted and he saw himself as neglected. He wasn't," she said.

Neighbors said Robert Dreesman had a reputation of going out of his way to avoid people.

"Nobody knew him," said Brian Keith.

Robert Dreesman was a 1986 graduate of the Palmer College of Chiropractic in Davenport.

Neighbors also said he had a medical degree from the University of Manila in the Philippines and did pre-veterinary work at Iowa State University, but they were unsure if he graduated.

A classmate said Dreesman was taken out of Algona High School in his freshman year in 1962-63, and a neighbor who refused to give her name told the Des Moines Register that he was admitted to the Menninger Clinic, a mental hospital in Topeka, Kan.

Patrick Burnau, vice president of public affairs at the clinic, said he could neither confirm nor deny that because of the clinic's policy of confidentialit.

Man Left Estate to Wildlife Fund Before Killing Kin

Los Angeles Times

January 9, 1988

ALGONA, Iowa — Robert Dreesman, who killed his parents, his sister and her three children, then took his own life, revised his will several weeks before the slayings, leaving just $1 to each family member, according to court papers filed Friday.

The rest of Dreesman's estate, which authorities said was "substantial," was earmarked for the World Wildlife Fund, officials said.

But investigators with the Iowa Division of Criminal Investigation refused to speculate about whether Dreesman was planning the killings when he changed his will.

Eugene Meyer, assistant division director, said authorities were still trying to determine the motive for the slayings. He said the will might be a clue but that so far they had nothing definitive.