On the morning of 29 January 1873, a milkmaid rang the bell at the gate of the Guérin enclosure, on the Rue des Maisons-Neuves in Monplaisir. No one answered. The neighbours, summoned in turn, met with no greater response; they promptly alerted the police commissioner. Within the bedchambers of the small house, all three inhabitants had been slain. The inquiry was soon to draw the magistrates of Villeurbanne as far as Marseilles, where Joseph Seringer, son of Hortense Posty and stepson of Louis Guérin, was apprehended at daybreak.
The account in the Gazette des Tribunaux opens with the voice of the indictment. It describes an isolated dwelling at number 20, Rue des Maisons-Neuves, set within grounds where the snow had proved suited to preserving footprints. Louis Guérin, aged sixty-eight and a former navigation collector, resided there with his wife Hortense, aged forty-eight, and their twenty-one-year-old daughter, Esther. Hortense had borne two sons from a previous marriage. Joseph, born in 1846, had served in the naval fleet, but had resided in Marseilles since obtaining his discharge. His brother was stationed in the colonies.
The indictment presents the Guérins as a family living in comfortable circumstances and strict economy. Louis drew a pension of fifteen hundred francs and managed a modest capital. The Gazette reports that the mother loved her sons despite the faults she laid to their charge, and that their stepfather had ever shown an interest in their welfare. Joseph, according to the same instrument, made frequent appeals for money. This portrait belongs to the prosecution as reported by the newspaper; it does not, of itself, disclose the innermost sentiments of the household’s members.
The earliest clues were gathered in the snow. A man had scaled the boundary wall, crossed the grounds, and reached the well before quitting the premises. The tracks revealed no other point of ingress. Near the fountain lay a large pork-butcher’s knife—termed a parteret in the source—thickly smeared with blood; the investigators presumed that whoever cast it aside had washed his hands prior to his departure. The snow had begun to fall between eleven o’clock and midnight, though it did not last; the magistrates concluded that the nocturnal visitor, having departed in the morning, had likely spent the night beneath the roof.
Upon the ground floor, nothing indicated a struggle. On the parlour table remained the remnants of a meal laid for a single person, a broached bottle of eau-de-vie, and a second glass. The authorities deduced that the family had entertained a guest. Upstairs, the three corpses lay within the bedchambers. The Gazette details the wounds, but a catalogue of horrors can add little to the findings of the surgeons: the knife discovered in the yard appeared to them to have served in all three killings. The bodies were still warm; they estimated that the victims had been struck down between three and five o’clock in the morning. Other passages in the report suggest an interval between four and five o’clock. The precise hour thus remains uncertain.
The posture of the bodies likewise arrested the investigators. Esther lay within her bed. Louis had been dragged from his couch and cast down upon the floorboards; Hortense rested upon her stomach, her face buried against a bolster. The physicians determined that all three victims had been felled by the same weapon. They observed cuts upon the nightclothes and judged that certain of the bodies had been turned over after death. The violence was incontrovertible; the precise sequence of the blows, however, belonged to the forensic deductions and observations reported by the Gazette.
The presses and cupboards had been ransacked. The watch which Louis hung each evening upon a stand was missing; a small piece of furniture utilised as a strongbox had been forced open. In an adjoining room, an improvised pallet had been laid against this chest. Handprints and a patch of blood stained the mattress. To the detectives’ minds, a single perpetrator had acted, and he was intimately acquainted with the household. It was within this frame of reference that they examined Joseph’s movements.
In the early hours, a blacksmith had discovered, near the fort of Villeurbanne, a letter addressed to Madame Guérin. It had been penned the previous August by the young woman Joseph was to marry, announcing that he had been sentenced to three months’ imprisonment for the theft of a watch. The snow had not covered the page; it appeared, therefore, to have been dropped quite recently. The prosecution contended that Joseph had every interest in recovering it. A telegraphic dispatch was sent to the Marseilles police. The following morning, at six o’clock, officers arrested him in his lodgings.
Upon his person was found a heavy silver watch, complete with charms, a twenty-franc note stained with blood, and a woman’s ring set with a garnet. His garments, too, were soiled with stains. Joseph explained that he had set out for Toulon on 28 January and returned to Marseilles the following morning. The investigators could discover no one capable of corroborating this sojourn. His landlords did not see him return until the evening of the 29th, after the arrival of the train from Lyons. A railway conductor believed he recognised him aboard that train; he stated that he had seen the passenger carrying a small bundle wrapped in a handkerchief. The Gazette notes that he could not swear to the identification with certainty.
The seized effects formed another web of circumstantial evidence. The watchmaker who had sold the timepiece to Louis Guérin identified his marks upon it; several witnesses attested to having seen it shortly before the crime. Witnesses likewise challenged Joseph’s account of the ring: his sister Esther could not have known, at the time he claimed to have received it from her hands, that his engagement was broken. His betrothed, Appoline Gratiano, confirmed at the trial that she had refused his hand, but denied having asked him to return the ring through the agency of his sister. The gold chain formerly presented to Joseph by Louis had been sold before the journey; the purchaser did not recall having seen the charms.
The chemical analysis of the clothing weighed heavily in the proceedings. The chemist Ferrand observed over two hundred stains, diagonal and clustered in groups across the trousers, shirt, waistcoat, and jacket. He concluded that they did not arise from a nosebleed, suggesting instead that they had been sprayed while the wearer was engaged in a posture of violent struggle. He also examined the folds of the handkerchief and the marks on the banknote. The expert did not believe, however, that Joseph’s ankle boots had been worn at the scene of the crime: he posited either that the accused had struck barefoot, or that he had changed his footwear. The defence seized upon this discrepancy, just as it challenged the possibility that a solitary man could have dispatched three individuals without awakening the others.
The court finally heard the testimony of relatives and acquaintances. Several recognised the watch; others recounted what Hortense had told them concerning money lent to her son, or of an earlier attempted theft on 15 January. Certain recollections were hearsay and were presented as such. The witnesses from Marseilles failed to corroborate the story of a journey to Toulon; one of them did not recognise Joseph. Appoline affirmed that she had unequivocally conveyed to him the termination of their marriage plans. Joseph denied the murders and maintained that he had bought the watch from an unknown stranger.
The Advocate General, Roger Belliard, conducted the prosecution. Maîtres Gignoux and Guerrier addressed the court for the defence. They underscored the uncertainties in the identification of the railway traveler, the complete absence of blood on the boots, and the contradictions between the testimonies regarding the jewellery. They argued that the circumstantial evidence fell short of establishing a premeditated crime executed by a lone assailant. The journal records that the jury returned an affirmative finding on parricide and robbery, but answered in the negative as to premeditation; the verdict remained silent regarding extenuating circumstances. The Court nevertheless pronounced the penalty of death.
The letter fallen in the snow, the watch recovered in Marseilles, and the stains of blood formed before the bench a chain of evidence that led Joseph Seringer inexorably back to his mother’s threshold. The Gazette also records the reservations raised by the defence and the frailties of certain testimonies. Its chronicle concludes with the sentence; it offers no narration of a subsequent execution. The verdict records what the jury resolved, without transmuting into direct observation that which witnesses and experts had merely inferred.
Archival Note: This account is based on the reports of the Gazette des Tribunaux dated 4, 5, and 6 June 1873, which reproduce the indictment and record the closing proceedings. The issue for 3 June could not be retrieved from the ENAP server (URL tested, 404 response); earlier hearings are therefore not reconstructed. The multi-column OCR transcript contains errors; uncertain facts remain attributed to their respective witnesses, experts, or the prosecution. The source makes no mention of an execution.