Eldon Mate–Donny Mate father–son relationship

The relationship between Eldon Mate and Donny Mate is presented less through shared scenes than through its consequences: Eldon rejected his son, Donny disappeared into an unstable life, and investigators came to wonder whether resentment had become a motive for murder. Donny’s possible return to his father’s orbit—through an imagined confrontation and paintings of Eldon—remains a theory, not a confirmed account. The gap between what is known and what is suspected makes their estrangement both a family wound and an investigative lead.

Rejection and the family left behind

Guillerma Salcido Mate recalls that she once imagined moving to Oakland, becoming a registered nurse, and working alongside Eldon after he opened a medical practice. That future did not materialize: she says Eldon would have nothing to do with her or Donny, so she had to keep working and never finished her schooling. Her account places Donny’s exclusion within a broader rupture. Eldon’s withdrawal was not described as a single quarrel but as a refusal that shaped the household’s prospects and left Guillerma carrying the practical burden of supporting herself and her son.

When investigators considered Donny as a possible threat, they interpreted that rejection as a source of primal anger. Alex Delaware reasoned that even if Donny had experienced a mental breakdown, he might have retained enough intelligence to plan a return. In this reconstruction, Eldon’s growing fame could have sharpened the grievance: Donny might have come back seeking to take over the family business. The image of a son returning to claim a place from which he had been excluded gives the relationship an Oedipal cast, but it remains Delaware’s speculation rather than a motive established by Donny or by direct evidence.

Donny’s disappearance and the record

A search under Eldon Salcido, an identity linked to Donny, produced three California convictions. The record showed a progression from driving under the influence, six years earlier, to larceny two years after that and assault eighteen months before the investigation. Donny had served time in Marin County and been released six months earlier. Delaware noted that Donny had not contacted his mother during his imprisonment; he and Milo Sturgis read the isolation and increasingly aggressive offenses as details that could fit a son consumed by anger, while recognizing that they did not prove he had attacked Eldon.

Guillerma’s silence about Donny’s circumstances also mattered to the investigators. She had not mentioned any artistic ability, and Delaware observed that she seemed unwilling to discuss him. By the time of the later inquiry into the paintings, she had checked out of her motel; Delaware said that she had reported Donny living on the street by the time he was arrested. He imagined that Donny might have drifted east to Colorado and found an empty building in which to pursue art. The account establishes neither that journey nor that location as fact: homelessness and the criminal record are the available details, while the imagined route gives shape to how completely Donny had vanished from family life.

The paintings as a possible appeal

The paintings offer a second, more tentative account of Donny’s relation to his father. Delaware proposed that portraits of Eldon might have been another effort to establish a bond, a way of presenting himself to the father who had rejected him. If Donny delivered the work hoping to impress Eldon, another rebuff could have revived the old injury. This reading makes artistic recognition a substitute for the family acknowledgment Donny had not received, but the evidence does not establish who made the paintings or what response Eldon gave.

The contrast between the portraits and the work titled The Anatomy Lesson sharpened the investigators’ questions. The other paintings were described as straightforward portraits of Eldon; this one placed him on a dissecting table. Delaware suggested that Donny might have painted his father being cut open and then considered acting out the image. He also offered a less directly violent possibility: the paintings might have been an attempt to sell himself to Eldon, with the disturbing work expressing the same longing for recognition in a transformed, hostile form. The object can therefore be read as both an imagined bond and a threat, but neither interpretation is confirmed as Donny’s intention.

Estrangement as motive, not proof

The investigation gives Donny’s family history a double significance. Eldon’s rejection supplies a plausible emotional grievance, while Donny’s isolation, homelessness, and assault conviction make the possibility of violence seem credible to the detectives. Yet those elements remain circumstantial. Delaware and Milo Sturgis consider whether Donny could have returned to confront his father, but the narrative does not establish that he met Eldon at Mulholland, made the paintings, or killed him. Their theory shows how the abandoned son becomes legible as a suspect; it does not resolve what the son actually did.

The relationship is also set against the money and public attention surrounding Eldon’s life. Milo Sturgis wonders whether Donny, Guillerma, Alice Zoghbie, or someone else might press a claim after learning that Eldon left more than three hundred thousand dollars in the bank. That possibility adds material stakes to the estrangement without replacing its emotional history: a claim on the estate might concern money, recognition, or both, but no claim by Donny is established here. What persists is the asymmetry between a father who withdrew and a son whose absence became conspicuous only when investigators began looking for a reason to kill him.