Matthew Stone Sr. killed his family in Erie behind a normal mask

By Daniel Okafor · Reporting from New York · October 12, 2026

Matthew Stone Sr. killed his family in Erie because neighbors and kin mistook a mask for stability, ignoring the collapse until the gunshots started.

Matthew Stone Sr. spent his final days pretending to be a grandfather. He smiled. He played the part of the family patriarch. But the smile was a lie. Stone used a facade of normalcy to hide a violent collapse. On October 9, 2026, he killed his family in his Erie, Pennsylvania, home before he shot himself. The community and his kin were wrong to trust the mask. They mistook a performance for stability and ignored the rot beneath.

The mask of the patriarch

The victims were Stone's own blood. He killed his wife, Michelle Stone. He killed his sons, Matthew Stone Jr. and Jonathan Stone. He killed his daughter, Angelina Stone. Angelina was pregnant and due to give birth on Monday, according to NBC News. He also killed a 5-year-old boy and a 1-year-old girl named Amari'anna.

Julius Windham, the father of the toddler, saw the gap between the man and the mask. "I think that was a front for him," Windham said. He described a man who smiled every day. This pattern of hidden impulse mirrors the 2014 Isla Vista killings. In that case, a killer appeared normal to those around him while harboring violent impulses.

The mechanics of the massacre

The killing began inside the house at 722 Perry Street. Investigators from the Erie Police Department recovered audio of muffled gunshots. Two women arrived at the home and pounded on the door. They wanted to help.

Matthew Stone Sr. came outside. He shot both women as they ran toward him. He then went back inside. The women were Lora Lee Roberts and Twila A. Tanner, according to AP News. Roberts was the sister of Michelle Stone. She had come to give Angelina Stone a ride to the hospital.

Police arrived minutes later. A ShotSpotter system had alerted them to the gunfire. Officers used a drone and a robot to scout the house. They found the boy and the girl on the first floor. Two women and two young men lay in a stairwell. Stone was on the second floor. He had already killed himself.

Did the community miss the signs?

People who knew the family for 30 years missed the turn. Nicole Eller said Stone "was a good guy, and then he started going downhill with everything." This is the danger of the "good guy" label. It blinds people to the evidence of a break.

The Parkland shooting followed the same mechanism. In that case, a perpetrator's deteriorating mental state and behavioral warning signs preceded the killing. In Erie, the signs were there, but they were muffled by the role Stone played.

Lora Roberts spent her life helping others. She worked in homeless advocacy. On July 15, she wrote a Facebook post urging people to "check on the people you love." She did not see the danger in her own brother-in-law.

The cost of silence

Erie Mayor Daria Devlin and Governor Josh Shapiro offered support to the grieving. They called it a dark day. But support after the blood is spilled does not fix the failure of the watch.

Police Chief Rick Lorah said the women who arrived at the house "knew something was going on." The community knew there was a problem, but they did not know the scale. They trusted the smile.

The record shows that a "normal" exterior is often the best cover for a killer. The facts suggest that community groups in northwestern Pennsylvania will now launch wellness check campaigns. These will focus on seemingly stable patriarchs. They must look past the front.

The tragedy at Perry Street was not a random act. It was the result of a mental collapse that the family accepted as a slow decline. Matthew Stone Sr. killed his children and grandchildren because the people around him mistook a mask for a man. When a family patriarch "goes downhill," the community cannot afford to wait for the gunshots to start.

Sources

1. Fox News: Pennsylvania gunman who killed 8 was grandfather who seemed normal, victim relatives say
2. AP News: Authorities name the attacker and most of the 8 victims in last week’s Erie mass shooting
3. NBC News: Victims of Pennsylvania mass shooting included pregnant daughter of gunman
4. NRK: Ni drept etter masseskyting i Pennsylvania