Grace Parkes

No Photo
Name: Grace Winifred Parkes.
Died: January 16, 2005.
Age at death: 83.
Cause of death: Murder.
Location: Sydney, Australia.
Disability: Diabetes, hypertension, Paget’s disease, Bells palsy, glaucoma, goitre, osteoporosis and osteoarthritis.

Details:
Grace’s son bludgeoned her to death.

Perpetrator: Phillip Raymond Parkes (Son).

Source: Regina v Phillip Raymond Parkes [2006] NSWSC 331

Mary Sawyer

A gravestone reading, Sawyer, Mary and Charles, together forever.Name: Mary Esther Sawyer.
Died: June 21, 2004.
Age at death: 79.
Cause of death: Murder.
Location: Latrobe, Pennsylvania, USA.
Disability: Dementia.

Details:
Mary’s daughter checked her out of her nursing home, took her home, drugged her, and suffocated her with a pillow.

Perpetrator: Rita Ann Sawyer (Daughter), convicted of first-degree murder, sentenced to life in prison.

Source: U.S. court rejects plea for new trial by midstate doctor convicted of killing mom

Florence Simpson

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Name: Florence Majorie Simpson.
Died: October 3, 2000.
Age at death: 81.
Cause of death: Murder.
Location: Howick, New Zealand.
Disability: Terminal cancer.

Details:
Florence’s son strangled her with the cord to her morphine pump.

Perpetrator: Christopher Simpson (Son), charged with murder.

Source:
Doctor charged with strangling mother
Strangled mum full of morphine
The New Zealand Herald
Mercy Killing

Joy Martin

Photo of Joy Martin, an elderly woman with light skin and straight gray hair. The photo shows only the left half of the face.Name: Joy Martin.
Died: May 28, 1999.
Age at death: 69.
Cause of death: Murder.
Location: Wanganui, New Zealand.
Disability: Terminal cancer.

Details:
As she lay dying of cancer, Joy’s daughter injected her with a lethal dose of morphine.

After Joy was dead, her daughter wrote a book about killing her mother and was arrested.

Joy’s portrait on this memorial comes from the cover of her daughter’s book. It includes only half her face because on the book’s cover, her daughter used photo manipulation to combine half her face with half of Joy’s. In keeping with my policy of giving the killer as little publicity as possible, the daughter’s part of that image has been cropped out. –Editor

Perpetrator: Lesley Martin (Daughter), convicted of attempted murder; sentenced to 15 months, released after serving half her sentence.

Source: Lesley Martin jailed for 15 months

Mary Carlson

No PhotoName: Mary Lynn Carlson.
Died: April 21, 1997.
Age at death: 53.
Cause of death: Murder.
Location: Maricopa County, Arizona, USA.
Disability: Multiple Sclerosis.

Details:
Mary Lynn’s son and daughter-in-law had promised to care for her in exchange for room and board, but instead neglected her and spent her money. When Lynn moved into an assisted-living facility, they took out a life-insurance policy on her and hired two fellow lodgers to kill her. They stabbed her to death.

Perpetrator: Doris Ann Carlson (Daughter-in-law), convicted of murder, sentenced to death; David Carlson, conspiracy to commit murder, life sentence; Scott Smith, second degree murder, 10 years; John McReaken, first degree murder, life sentence.

Source: Darling Doris was a Deadly Daughter-in-law

Marcus Harman

Photo of Marcus Harman, an elderly man wearing a gray jacket, shirt and tie. He has gray hair and brown skin, and a wide smile.Name: Marcus Martinus Harman.
Died: June 7, 2015.
Age at death: 70.
Cause of death: Murder.
Location: Bethany, Oklahoma, USA.
Disability: Unspecified.

Details:
Marcus and his wife had a protection order against his son, who had made death threats against his wife. However, his son came to the house anyway and held Marcus captive for several hours before kicking him in the head. Marcus died of head injuries.

Born in Indonesia and educated in the United States, he loved learning, especially about science and math, had a master’s degree in epidemiology, and worked as a substitute teacher.

Perpetrator: Samuel Michael Harman (Son), pleaded no contest to second-degree murder, kidnapping and violating a protective order, sentenced to 35 years.

Source:
Bethany man sentenced in father’s death
Son Charged In Connection With Disabled Father’s Death
Obituary for Marcus Harman – Bethany, OK
Son faces charges in slaying of father in Bethany home