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Grace Marks

1828 – 1873

19-th-century Irish-Canadian pardoned accessory to murder

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About Grace Marks

Lived 1828 – 1873 (aged 44–45). Grace Marks was a Canadian maid.

Grace Marks (c. 1828 – after c. 1873) was an Irish-Canadian maid who was involved in the 1843 murder of her employer Thomas Kinnear and his housekeeper, Nancy Montgomery, in Richmond Hill, Ontario. Her conviction for the murder of Kinnear was controversial and sparked much debate about whether Marks was actually instrumental in the murder or merely an unwitting accessory. Marks was the subject of Margaret Atwood's historical fiction novel Alias Grace and its adaptations in other media.

Early life Marks was born and raised in Ulster, Ireland. Her father, John Marks, was a stonemason and an abusive alcoholic. She, along with her parents and eight siblings, immigrated to Upper Canada in 1840, when Grace was twelve. Her mother died on the ship en route to Canada and was buried at sea.

Murders Marks was employed as a maid in the house of Yonge Street farmer Thomas Kinnear, who was in a sexual relationship with his housekeeper, Nancy Montgomery. In July 1843, Kinnear and Montgomery were murdered by James McDermott, a servant. Kinnear was shot and Montgomery, who was pregnant at the time of her death, was hit on the head with an axe and subsequently strangled before being hidden under a large tub. Under the alias "Mary Whitney", Marks fled with McDermott to the U.S., but they were apprehended in Lewiston, New York, and deported to Toronto. It remains unclear whether Marks took part in the double murder. Marks's sentence, however, was commuted to life in prison which she served in Kingston Penitentiary. At one period (May 4, 1852 – August 18, 1853) she was committed to an asylum but was later returned to Kingston Penitentiary. In 1872, after almost thirty years of incarceration, Marks was pardoned and moved to upstate New York. After that she disappeared from the historical record. Alias Grace was adapted for the stage by Jennifer Blackmer and premiered at the Rivendell Theater in Chicago on September 1, 2017.

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Important facts

Born
1828, Ulster
Birth century
Died
1873
Occupation
Maid
Nationality

People in Grace Marks's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Grace Marks's

Frequently asked questions

Who was Grace Marks?

19-th-century Irish-Canadian pardoned accessory to murder

When was Grace Marks born?

Grace Marks was born in 1828 in Ulster.

When did Grace Marks die?

Grace Marks died in 1873.

What was Grace Marks's occupation?

Grace Marks was a maid.

What nationality was Grace Marks?

Grace Marks was Canadian.

Sources & further reading

· Wikipedia: Grace Marks

· Wikidata: Q16203290

· DBpedia: Grace Marks

Cite this page

APA: Biography.guide. (2026). Grace Marks. https://biography.guide/grace-marks/

MLA: "Grace Marks." Biography.guide, https://biography.guide/grace-marks/.

Chicago: "Grace Marks." Biography.guide. https://biography.guide/grace-marks/.

Data last updated: 2026-09-22 · Spot an error? Report a correction.

Portrait: Wikimedia Commons · author & licence

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