DAYTON, OH – A Dayton man was sentenced Tuesday to 15 years to life in prison after admitting he killed a 1-year-old girl under his care when she would not stop crying, a case that has drawn outrage from the victim’s family and calls for tougher sentencing laws.

Michael Mayor, 34, changed his plea from not guilty by reason of insanity to guilty last month, conceding his responsibility in the death of Vivian Gardner. The sentencing comes just weeks after he entered his plea and nearly eight months after the December 2024 incident that led to the child’s death.

According to court records, Mayor was watching Vivian on the morning of December 5 while his wife, a babysitter responsible for the girl, stepped out to take other children to school. During that time, Mayor became frustrated by Vivian’s continued crying. Prosecutors said he revealed during police interviews that he shook the infant before slamming her head multiple times on the bedroom floor, continuing until she no longer cried.

When his wife returned home, Mayor reportedly told her that Vivian was napping. After several checks throughout the day, the toddler remained unresponsive, and a 911 call was placed when she still had not awakened by mid-afternoon. First responders rushed Vivian to the hospital, where doctors discovered she suffered a fractured skull, a subdural hematoma, and other severe head injuries that medical staff attributed to violent force.

Vivian survived for nearly two weeks before succumbing to her injuries on December 19. Mayor, initially arrested on charges of felonious assault and child endangerment, saw the case escalate to murder after the child’s death. He ultimately pleaded guilty to a single count of murder as part of an agreement that dismissed remaining charges.

During sentencing, the judge underscored that the 15-years-to-life term is mandated by Ohio law for murder convictions. The judge also told Mayor that if more discretion were allowed in such cases, a much longer sentence may have been imposed.

In a brief statement through his attorney, Mayor offered an apology, but the court and Vivian’s relatives questioned whether he showed genuine remorse. Outside the courtroom, the child’s family voiced their disappointment with the length of the sentence and the possibility that Mayor could eventually be eligible for parole.

Vivian’s family has indicated they will advocate for legislative changes to toughen sentencing guidelines in cases involving severe violence against children. They hope reforms will help ensure punishment for these types of crimes more closely reflects the lasting pain felt by victims’ families and the community.

The case has reignited broader concerns about child protection and the adequacy of penalties for those convicted of crimes against children. Advocates and community members say the sentencing is a reminder of the urgent need to address gaps in the justice system that allow for early release in violent offenses.

As Mayor begins his prison term, Vivian’s family says they remain dedicated to keeping her memory alive by pushing for changes aimed at preventing similar tragedies in the future.