Biography.guide
Home › People › Nun › Harriet Starr Cannon
Portrait of Harriet Starr Cannon

Harriet Starr Cannon

1823 – 1896

Founder of the Community of St. Mary

Nun
Don't just read it — keep itBiographies to ownE-book · Audio · Video From $7 →

About Harriet Starr Cannon

Lived 1823 – 1896 (aged 72). Harriet Starr Cannon was an American nun.

Harriet Starr Cannon (May 7, 1823 – April 5, 1896) was a nun who founded the Sisterhood of St. Mary, one of the first orders of Augustinian nuns in the Anglican Communion and which remains dedicated to social service.

Early life

Cannon was born in Charleston, South Carolina to stock broker William and Sally Hinman Cannon. The Cannons were a merchant family whose ancestors were wealthy Huguenots who fled France for New Netherlands about 1632 and lived in New York City by 1693.

On September 29 and 30, 1824 William and Sally Cannon, respectively, died of yellow fever. Seventeen-month-old Catherine Starr and three-year-old Harriet were orphaned. During her lifetime and afterwards, the Community developed girls’ schools, hospitals, and orphanages in New York, Tennessee, and Wisconsin.

House of Mercy In 1863 the new religious order took over the former Howland Mansion on what was then the rural tip of Manhattan. The mansion had been turned into a home for "abandoned and troubled women" by Mrs. William Richmond, a rector's wife. By 1891, Cannon had overseen the building of a 200-room castle-like brick structure on the still-rural site and renamed it the "House of Mercy". Bishop Henry Codman Potter held an elaborate consecration service. Courts began assigning girls there, and families also brought their wayward daughters. The new structure, built to house 154 "fallen" women, had three divisions: the House of Mercy, St. Agnes’s House, and a division for penitents. Iron gratings barred the windows, and persons assigned to one division were not allowed to mingle with those in other divisions.

It better integrated with the rest of Manhattan when street car lines extended into the area in 1906, significantly after Mother Cannon's death. Novices, sisters and Mother Cannon (when she was not traveling) lived in a converted farmhouse on the site for decades as the complex was slowly built. Hannah Grier Coome, trained by the order in Peekskill and New York City, took religious vows at the Peekskill motherhouse on a Marian feastday in 1884, and returned to Canada to found a similar order, the Sisterhood of St. John the Divine. In 1892, St. Gabriel's chapel was dedicated in Peekskill, overlooking the Hudson River and built from stone quarried onsite. On the following All Saints Day, James De Koven and the rector of St. John's Church of Washington, D.C. lauded their efforts, and they are now honored liturgically on September 9 as the Martyrs of Memphis.

Death and legacy Three weeks before her death, Mother Cannon traveled to New York City to check on St. Mary's Hospital. Realizing her fondness for the sea, she established her last facility, a summer home for children in Norwalk, Connecticut overlooking the beach. She returned to the Peekskill motherhouse in good spirits, but fell gravely ill shortly after a retreat on Passion Sunday. She died about noon on Easter Day, 1896, surrounded by her community. She was buried in the convent cemetery in Peekskill. Mother Cannon is remembered in the Episcopal Church's Calendar of saints on April 5.

Community of St. Mary after Cannon's death The Community of St. Mary continued following Mother Cannon's death. In 2008 the Community of St. Mary merged with the American branch of the Sisters of Charity, notwithstanding their slightly different religious rules. The Sisters of Charity using one modeled upon that of St. Vincent de Paul, and the CSM rule having been written by Morgan Dix and founding Cowley Father Richard Meux Benson based on the Rule of St. Benedict.

Motherhouse In Peekskill, the order built a new convent in 1905 and a new school building in 1911.

Memphis The Memphis branch closed St. Mary's Preparatory School for Girls after the 1967-68 term, but now operates a retreat center near Sewanee, The University of the South. The CSM's western province continues to offer retreats at Mary's Margin in Mukwonago, Wisconsin. Since 2002, the order has another branch in Malawi as well as a mission at Sagada in the Philippines.

St. Mary's Hospital, Bayside St. Mary's Hospital continues in Bayside, New York, now specializing in caring for children with special needs or life-limiting conditions. St. Mary's remains a vibrant hospital, but is no longer affiliated with the Episcopal Church.

House of Mercy In August 1896, months after Mother Harriet's death, Laura Forman from Asbury Park, New Jersey brought a lawsuit, charging that while she was visiting her sister in New York, her father kidnapped and wrongfully committed her to this facility, where she was fed bread and molasses and occasionally gagged. Another sensational parental kidnapping case generated headlines in 1902. Still, the 1910 census counted 107 inmates at the House of Mercy, and listed its capacity as 110. Courts continued to sentence prostitutes to the facility, which trained them for domestic service, in part by operating a laundry. By 1912, most of the commitments were of victimized children, many previously abandoned to life on the streets. The Bureau of Social Hygiene reported that only four adult prostitutes were sent to the House of Mercy, but 57 girls had been sentenced to indefinite terms at the facility. However, funding had dried up, and by 1921, the New York Society for the Prevention of Cruelty to Children leased the building while it built a permanent home on Fifth Avenue between 105th and 106th Streets. Children had previously been jailed with adults or at stationhouses pending judicial action. The following year, the average daily population was 152 and the average stay eight days.

The Society moved to Valhalla, New York, and sold the Manhattan property in sections to the City of New York between 1915 and 1926. By 1933 the structures had become decrepit, although a caretaker had moved in (with his family of 10 children). Squatters also moved in: some farming the grounds, others establishing a colony with houseboats on the Hudson River. The city government drove out the squatters and tore down the main building in 1933. The caretaker and his family moved out when his cottage collapsed on December 9, 1933. The property became Inwood Hill Park with the assistance of workers from the Works Progress Administration (WPA) during the Great Depression. By 1950 the park had been extended into the Hudson River.

Biography shop

Don’t just read it —
keep it.

Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.

  • E-book
  • Audio
  • Video
Browse the shop — from $7

Instant download · yours to keep · every purchase keeps this site free

Important facts

Birth century
Occupation
Nun
Nationality
Also known as
Harriet Cannon

People in Harriet Starr Cannon's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Harriet Starr Cannon's

Frequently asked questions

Who was Harriet Starr Cannon?

Founder of the Community of St. Mary (1823-1896)

When was Harriet Starr Cannon born?

Harriet Starr Cannon was born on 7 May 1823 in Charleston.

When did Harriet Starr Cannon die?

Harriet Starr Cannon died on 29 March 1896 in Peekskill.

What was Harriet Starr Cannon's occupation?

Harriet Starr Cannon was a nun.

What nationality was Harriet Starr Cannon?

Harriet Starr Cannon was American.

Sources & further reading

· Wikipedia: Harriet Starr Cannon

· Wikidata: Q16857670

· DBpedia: Harriet Starr Cannon

Cite this page

APA: Biography.guide. (2026). Harriet Starr Cannon. https://biography.guide/harriet-starr-cannon/

MLA: "Harriet Starr Cannon." Biography.guide, https://biography.guide/harriet-starr-cannon/.

Chicago: "Harriet Starr Cannon." Biography.guide. https://biography.guide/harriet-starr-cannon/.

Data last updated: 2026-09-21 · Spot an error? Report a correction.

Portrait: Wikimedia Commons · author & licence

Page generated 2026-09-27 05:00 UTC