An 80-year-old artist, her two sons, and her daughter-in-law had been all discovered lifeless early Tuesday morning in a suspected triple murder-suicide that was carried out at a pair of houses in swanky Seattle suburbs.
Danielle Cuvillier, 80, and her son, Mackenzie P. Williams, 45, had been discovered lifeless Tuesday morning at a house in Mercer Island, simply seven miles exterior of Seattle, native cops stated in a submit on Fb.
Hours later, a lady in her 40s and a person in his mid-30s had been discovered lifeless in a home in Issaquah, 17 miles exterior of Seattle, whereas police had been doing a welfare examine, in response to a Fb submit from the Issaquah Police Division.
Mercer Island Police Division Commander Jeff Magnan later confirmed that his workplace flagged Danielle and Williams’ deaths to the Issaquah police and requested them to do a welfare examine on Danielle’s 34-year-old son, Dominick Cuvillier, and Williams’ spouse, the Seattle Occasions and KIRO 7 reported.
Danielle’s legal professional informed KIRO 7 that Dominick was one of many victims discovered on the Issaquah dwelling. Neighbors additionally confirmed with the outlet that Williams’ spouse was the second unidentified sufferer.
Danielle and Williams’ deaths are being investigated as a murder and suicide, although police haven’t recognized the shooter.
The mom was a “devoted artist” with an curiosity in images, sharing her work on Instagram over time.
Authorities recovered 4 firearms contained in the Mercer Island dwelling and located a fifth in a automobile on web site, in response to the Mercer Island Police Division.
The Issaquah deaths are being investigated as homicides, in response to KOMO Information. Authorities famous that each victims had been shot, and there was no signal of compelled entry.
The grotesque deaths got here after greater than a yr of intense battle between Danielle and Williams in regards to the artist’s youthful son’s care, in response to court docket paperwork obtained by the retailers.
The 34-year-old was identified with Angelman syndrome, a uncommon genetic dysfunction that causes extreme developmental delays and requires in depth round the clock care.
Dominick lived together with his dad and mom till his father died in 2018. After that, Williams stepped in and organized a shared caregiving routine for him with their mom.
Williams accused Danielle of bodily and emotionally abusing his disabled brother in a King County court docket declaration, which Danielle denied, the retailers reported.
In January 2025, Williams met with a lawyer and began working in the direction of assuming energy of legal professional, together with his brother’s consent, so he might be solely chargeable for his sibling’s care.
Danielle then accused her youthful son of being “unduly influenced” to relinquish management to Williams, the Seattle Occasions reported.
The matriarch was later charged with fourth-degree assault after a tiff with Williams on the Mercer Island dwelling, which she refused to let him enter.
Danielle later filed a petition for a safety order in opposition to Williams on behalf of her youthful son. Within the order, she claimed Williams’ “conduct has been unpredictable and aggressive recently” and highlighted the startling variety of firearms in his dwelling, the outlet reported.
Williams confessed to having 53 firearms in his dwelling, which he surrendered, in response to a separate doc.
The safety order was permitted and reissued three extra instances, however was terminated in early December.
In August, Danielle and Williams agreed to have Dominick dwell together with his mom, however permitted visitations on Sundays and Mondays, plus one weekend a month. They agreed to solely talk with one another over textual content and electronic mail in order that Dominick wouldn’t be caught between their squabbles.
Danielle was additionally named as his sole guardian and conservator.
The King County medical expert’s workplace will decide the trigger and method of all of the victims’ deaths.
