At ten o’clock, silence fell over the courtroom in The Hague. The presiding judge began the reading of the decree, while two guards led Maria Catharina Swanenburg between them. She walked with difficulty, her countenance flushed, a handkerchief pressed against her features. When the president reached the findings concerning Arend de Hees, she sank into her seat. Her head fell backward; she groaned, laboring for breath. Moments later, she lost consciousness. The president continued for several lines; she then collapsed onto the bench with a heavy moan. The proceedings were suspended.
It was the first day of May, 1885. The public had gathered in great numbers; the security measures enforced throughout the trial had been renewed. Halting his reading, the president inquired whether a physician might be present among the spectators. None came forward. Guards and court officers carried the accused into an adjoining room. Water and spirits were administered to her; her face and wrists were bathed. A murmur of agitation ran through the hall; the president demanded silence, threatening to clear the chamber. Only then was calm restored. The assembly remained in their seats.
The reading did not resume at once. Het Vaderland reports that some ten minutes elapsed. During this interval, the court seemingly considered continuing the pronouncement in the absence of the accused. The bailiff on duty, Pontier, then announced that she had regained sufficient strength to return, rendering such an expedient unnecessary. She reappeared in tears, her steps still faltering. The president permitted her to remain seated for the remainder of the decree. Bent forward, her face buried in her handkerchief, she sat listening until the formal pronouncement; the chronicle notes that she was carried away once the judgment had been rendered.
### Three Episodes Under Inquest
Maria Catharina Swanenburg, forty-six years of age, was a washerwoman born and domiciled in Leiden, the wife of Johannes van der Linden. The journal recounts her conviction for the poisoning of Arend de Hees, of Suzanna Aben, and subsequently of Hendrik Frankhuizen and his wife: three criminal acts, four deaths.
The final act thus united two individuals within a single judicial charge. This distinction proved essential to the operative part of the decree: the court declared Swanenburg guilty of poisoning committed on three occasions, whereas the tally of the deceased stood at four. The number of counts retained was not to be confounded with that of the victims.
The decree adhered point by point to the indictment and the testimony delivered at the bar. For each victim, the magistrates scrutinized the nature of their ties to Swanenburg, the procurement and administration of the poison, and the observable consequences that ensued. The judgment did not blend the four fatalities into a singular narrative: the bench revisited the circumstances of each, establishing the identity of the bodies examined during the preliminary instruction. They cited the findings of the expert witnesses, employing them to tie the poisoning directly to each demise. Het Vaderland abridged the decree without reproducing the documentary evidence, the depositions, or the technical expert reports in full. The article thus traces the logical stages of the judicial proof, without providing the technical minutiae of each post-mortem examination.
For each of the facts in evidence, the decree inventoried the explanations offered by Swanenburg against those brought to light by the inquest and the hearings. The judges weighed them against the facts deemed established, setting forth the grounds for their certainty regarding a deliberate intent to take life. They distinguished what the accused had asserted concerning her motive from what the trial debates had laid bare. Their conclusion was that the ultimate design had been the collection of the victims’ insurance policies. The poison, according to the decree, had been introduced into victuals or beverages intended for each individual, with Swanenburg fully aware that death could—or must—ensue. This deduction linked the acts retained, their foreseeable consequence, and the financial motive; the report attributes this conclusion to the precise circumstances examined by the court.
In the case of the Frankhuizens, the judges dismissed her denial of an intent to kill. This particular scrutiny addressed the defense offered for that final episode. They gave no credence to the claim that she had been intoxicated at the time of the acts; the previous poisonings had sufficiently instructed her as to the mortal consequences of her conduct, yet she had made no attempt to summon timely aid. The decree thus did not present criminal intent as a mere presumption inferred from the fatal outcome: it rested upon what the court deemed she already knew, and upon her demeanor in the wake of the attacks.
### The Leiden Neighbor
The Nationaal Archief places the public life of Swanenburg in the 1870s. She is there depicted as a popular neighborhood figure who nursed the sick, minded children, cooked, and washed linen for those no longer capable of the task. It was to this reputation for readied service that the archive traces her sobriquet, “Goeie Mie”—“Good Mie.” These charitable acts and this reputation belong to the biographical record preserved by the Nationaal Archief; they supply the historical context of her moniker without, in themselves, illuminating the subsequent crimes brought to trial.
The same archival record relates that on December 15, 1883, two officers of the Leiden municipal police presented themselves at Swanenburg’s dwelling. The mother and son of the Frankhuizen household lay dead; the father remained gravely ill. The officers arrested Swanenburg upon suspicion of poisoning. Detained in The Hague for over a year, she awaited the conclusion of a preliminary inquiry that led, on March 14, 1885, to her formal indictment for the murder of four persons, according to the Nationaal Archief. The verdict of May 1 retained, for its part, three acts of poisoning and four deaths, including those of the father and his wife. These differing terms reflect two distinct procedural stages: the archive summarizes the initial formal bill of indictment, whereas the newspaper records the legal qualification ultimately retained in the final judgment. Between her arrest and the court’s decree, nearly seventeen months had elapsed.
### The Operative Judgment
Upon the return of the accused, the president brought his reading to a close. Pursuant to Article 301 of the Dutch Penal Code, the Gerechtshof found Maria Catharina Swanenburg guilty of poisoning, committed three times. The contemporary report notes that the statute of September 17, 1870, had abolished capital punishment; at the time of the verdict, that ultimate penalty was no longer available to the bench. The decree pronounced a sentence of perpetual confinement in a tuchthuis—a penal house of correction—and cast the costs of the trial upon the convicted woman. It further ordered that the material exhibits be returned to their lawful owners or heirs, and that an abstract of the judgment be posted in The Hague and in Leiden. According to the Nationaal Archief, Swanenburg died while still in penal custody on April 11, 1915.