Oklahoma man confesses to being 'forceful' when caring for now deceased 10-week-old girl
TULSA, Okla. – A Quapaw man who pleaded guilty to the death of a 10-week-old infant girl was 'woefully unprepared' to care for the child and her twin sister, according to court documents filed by his attorney.
Michael David Gregory, 31, pleaded guilty on Tuesday to reduced charges of voluntary manslaughter and assault resulting in serious bodily injury – both in Indian Country in the death of 10-week-old Amaya Mae Robison.
In his plea agreement, Gregory stipulated to a 15-year sentence on the first charge and a five-year sentence for the second charge. According to the plea agreement, both sentences are to run together.
The infant died on Dec. 3, 2022, at St. Francis Children's Hospital in Tulsa from 'blunt force trauma of the head and neck.'
Gregory was initially charged with first-degree murder, two counts of child abuse, and two counts of child neglect in Indian Country.
In his plea agreement, Gregory said he was responsible for the twin infants while his girlfriend went to work.
Gregory confessed, 'I was often forceful when I picked up or laid down' the twin girls 'which is not proper care for newborn infants.'
On Dec. 1, 2022, he called his girlfriend, saying one of the infants had stopped breathing.
The other twin sister also had a small brain bleed; however, she has made a full recovery, court documents show.
Gregory's attorneys file a motion requesting he not be taken into custody pending sentencing. In the motion, it states that the twins' biological mother gave birth to the girls prematurely.
The biological mother of four children had abandoned her oldest daughter with a neighbor, and Child Protective Services took her other daughter,' the motion states. The twins were subsequently placed in the custody of her aunt and Gregory's girlfriend, Shanna Kimbro, 10 days after their birth, court records show.
Online court records show the biological mother has not been charged, and Gregory and Kimbro applied for a marriage license in Ottawa County in Feb. 2024.
Gregory 'had never cared for a baby before, and he was woefully unprepared.'
DEFENDANT'S MOTION TO CONTINUE RELEASE PENDING SENTENCING, Case No. 23-cr-142-SEH
The FBI interviewed Mr. Gregory and he candidly explained how he cared for the twins.
'It is painfully obvious to any parent watching his statement that Mr. Gregory had no idea how to care for a baby—much less two of them,' the motion states.
The motion states that all the witnesses in this case, including the twins' biological mother, agreed that Gregory loved the twins.
Judge Sara E. Hill granted Gregory's motion to continue his release and set a sentencing date for June 10.
Copyright 2025 Nexstar Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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