In 1863, Theodore B. Weber, then a businessman in Burlington, Iowa, was attracted to Mrs. Adelaide (Ada) Bennert, a woman sixteen years his junior. His passion “soon ripened into criminal intimacy,” and although both were married, they began a romantic affair. When Mr. Bennert learned of his wife’s infidelity, he left her in disgust. Weber moved to Chicago to join his brother’s boot-and-shoe wholesale business. Ada followed him to Chicago, and the affair continued.
In April 1864, Ada gave birth to a son, whom she named Theodor Bennert (for whatever reason, she dropped the final "e" from Theodore). Weber never denied that he was the boy's father, but he gave Ada $1,000 with the provision that she keep the matter private.
Ada divorced Bennert for desertion and married a man named Robert. When Mr. Robert died in a railroad accident, Ada Robert decided she needed more money from Weber. She hounded him constantly and threatened to bring the boy to meet his family. Finally, Weber agreed to meet with Ada and his attorney to draft an agreement to provide financial support for his son.
He agreed to invest $5,000 for the benefit of the boy, with the trustee to be Edmund Juessen, his attorney. The interest of 8% per annum would be paid to Ada in quarterly installments until Theodor turned 21, when he would be paid the principal. If the boy died, Ada would continue to receive quarterly payments.
In August 1876, 12-year-old Theodor Bennert drowned, and Ada was devastated by the loss of her son. Adding to her grief, the quarterly payments from Weber stopped the following year. In December 1878, Ada Robert filed suit against Theodore Weber to compel him to fulfill the contract and continue the payments. She also asked for $50,000 in damages. Weber countersued, accusing Ada of blackmail, alleging that he had paid her to keep quiet about his son's birth and that she had not complied.
The case was to be heard on July 2, 1879, but since Weber was leaving for Europe soon and would be gone until July, depositions were taken that spring. On April 30, they met in the office of Ada’s attorney to take testimony. When one of the female witnesses came in, Weber offered her his chair. In a fit of rage, Ada picked up the chair and threw it at him. When the testimony ended, Weber rushed out of the room, with Ada making threatening gestures toward him.
The following day, the depositions were held at Edmund Juessen's office. At Juessen’s suggestion, Weber hired a Pinkerton detective to join him at the meeting for protection. Weber was seated at the table when Ada came in and put a photograph in front of him, saying, “Will you deny that that is your boy?” Weber replied that he did not desire to have any private conversation with her. Juessen told her to sit down.
“You were afraid of me yesterday,” Ada said to Weber, “You need not be, for if I desired to harm you, I could have done so a hundred times.”
Then, in a flash, she drew a revolver and shot Weber in the abdomen. The detective grabbed the revolver from Ada’s hand and wrestled her to the ground. He held her until the police arrived. Weber sprang to his feet and hurried out of the room. Pale, but calm, he said to Juessen, “Isn’t this a pretty piece of business?” He soon succumbed to the effects of the wound and was removed to his brother’s elegant residence. Weber remained conscious, but the physician treating him could see that he would not survive. When told there was no hope, Weber said, "This is very hard. I have lived for 50 years and have never wronged anyone." He died around 2:00 that afternoon.
Ada was held in jail. On the morning of the inquest, she suffered two epileptic fits and could not attend. After hearing the testimony, the coroner’s jury declared:
Theodore B. Weber. came to his death from a pistol shot wound inflicted by Mrs. Adelaide Robert, and we, the jury, recommend that she be held without bail to answer to the charge of murder to the Grand jury of Cook County.
Ada’s trial for murder began on November 6, 1879. The most important prosecution testimony came from Edmund Juessen, who could describe the crime and all the incidents that led to it. But the trial came to an abrupt end when physicians testifying for the prosecution agreed with those testifying for the defense that Ada was insane at the time of the murder, due to epilepsy. The State Attorney asked that the jury be instructed to find a verdict accordingly and sentence her to the insane asylum for a term of years. The defense argued that she should be released on the grounds that she was now perfectly sane.
The jury retired and, after a couple of minutes, returned with the following verdict:
We, the jury, find that the defendant did commit the act of killing Theodore Weber, as charged in the indictment against her, but at the time of committing the same, the said defendant was insane, and therefore we find her not guilty and that the said defendant had not entirely and permanently recovered from such insanity.
The court then made the formal order that Mrs. Adelaide Robert be conveyed to the Northern Asylum for the Insane at Elgin.
Sources:
“Another Tragedy in Chicago,” Cincinnati Commercial Tribune, May 2, 1879.
“Condensed Telegrams,” Wheeling daily intelligencer., May 2, 1879.
“Crime's Carnival,” Evening News., May 2, 1879.
“Criminal,” Freeport Daily Bulletin, May 2, 1879.
“A Delilah's Revenge,” Rockford Register, May 9, 1879.
“He is Dead,” Chicago Daily News, May 2, 1879.
“The Inquest,” Chicago Daily Telegraph, May 3, 1879.
“Mrs. Robert,” Chicago Tribune, November 9, 1879.
“Mrs. Robert,” Chicago Tribune, November 18, 1879.
“Murder Trial,” The Rockford Daily Gazette, November 7, 1879.
“Murdered by a Mistress,” Illustrated Police News, May 17, 1879.
“Robert vs. Weber,” Chicago Tribune, December 9, 1878.
“She was Crazy,” Star Tribune, November 17, 1879.
“Weber's Slayer,” Chicago Daily Telegraph, November 8, 1879.