Mary Connelly — 1940 US Census Record

Model Tree available

1940 United States Federal Census · St.-Lawrence-County, New York

Our Model Tree links this Mary Connelly across the 1920, 1930 and 1940 US Censuses in St.-Lawrence-County, New York (XGBoost, ~Confirmed), with identified parents Jeremiah & Mary — first a daughter (b.~1888), then head of a 2-person household.

Age 52 b. ~1888 Female Daughter Born: Connecticut Single

1940 Census Record Details

Census Year	1940
Location	St.-Lawrence-County, New York
Surname	Connelly
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	52
Marital Status	Single
Birthplace	Connecticut
1935 Residence (City)	Potsdam
1935 Residence (County)	St. Lawrence
Additional Details
Highest Grade	H-4
1935 Residence	Same House
Birth State	Connecticut
Birth Country	United States
Birthplace (normalized)	connecticut
Township / Ward	Potsdam
Est. Birth Year	~1888

Household Members

Census records only state relationship to the household head. Pairwise kinship is derived (~90–95% accurate), not recorded. Step/blended families and boarders can break it.

2 people recorded at the same address in the 1940 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Jeremiah Connelly	Head	—	83	~1857
Mary Connelly	Daughter	—	52	~1888

Census Appearances

1920

St Lawrence, …

Daughter, age 32

St Lawrence, New York · implied b. ~1888 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Connelly
Given Name	Maud E.
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	32
Marital Status	Single
Birthplace	Connecticut
Father's Birthplace	New York
Mother's Birthplace	New York
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Connecticut
Birth Country	United States
Birthplace (normalized)	connecticut

1930

St Lawrence, …

Daughter, age 42

St Lawrence, New York · implied b. ~1888 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Connelly
Given Name	Mary E.
Relationship to Head	daughter
Sex	F
Color / Race	White
Age	42
Marital Status	Single
Birthplace	Connecticut
Father's Birthplace	New York
Mother's Birthplace	New York
Can Read/Write	Yes
Birth State	Connecticut
Birth Country	United States
Birthplace (normalized)	connecticut

1940

St.-Lawrence-County, New …

Daughter, age 52

St.-Lawrence-County, New York · implied b. ~1888 — 2 household members

Surname	Connelly
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	52
Marital Status	Single
Birthplace	Connecticut
1935 Residence (City)	Potsdam
1935 Residence (County)	St. Lawrence
Highest Grade	H-4
1935 Residence	Same House
Birth State	Connecticut
Birth Country	United States
Birthplace (normalized)	connecticut

Model Tree

Model Tree available

Our Model Tree links Mary Connelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jeremiah Connelly (~0.92 confidence) and mother Mary Connelly (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Jeremiah Connelly

b. ~1856

Source father

● Household · direct · ~0.92

Mother

Mary Connelly

b. ~1857

Source mother

● Household · direct · ~0.92

This person

Anchor record

Mary Connelly

Daughter · 1940 · age 52 · b. ~1888 · New York

★ You are viewing this record

Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — St.-Lawrence-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02771-00498)

Line	Name	Age	Relation	Occupation	Birthplace
41	Albert Dough	40	Head	Mechanic	New York
42	Esther Dough	34	Wife	—	New York
43	Rosemary Dough	8	Daughter	—	New York
44	Margaret Ann Dough	6	Daughter	—	New York
45	Mattie Squire	69	Head	—	New York
46	May Squire	67	Sister	Bookkeeper	New York
47	Franklin Bishop	61	Head	Teacher	New York
48	Anna Bishop	59	Wife	—	New York
49	Dorothy Brown	45	Head	Teacher	Canada English
50	Marguerite Butterfield	45	Partner	Teacher	Ohio
51	Estelle B. Sterling	49	Head	—	Missouri
52	James Sterling	18	Son	Attends School	Oklahoma
53	Earl Kidd	34	Head	Meter Electric Reader	Canada English
54	Anna Kidd	59	Mother	—	Canada English
55	William Kidd	33	Brother	Stock Clerk	Canada English
56	Jeremiah Connelly	83	Head	—	New York
57	Mary Connelly THIS PERSON	52	Daughter	—	Connecticut
58	Dr. Frederick C. Wilson	64	Head	Educator	England
59	Leila Wilson	63	Wife	—	Illinois
60	Ruth E. Perrin	42	Head	Postmaster	New York
61	Thomas W. Perrin	25	Son	Attends School	New York
62	Mary E. Perrin	22	Daughter	New Worker	New York
63	Ruth L. Perrin	21	Daughter	Attends School	New York
64	Kenneth Mcgowan	35	Head	Pharmacist	New York
65	Katherine Mcgowan	35	Wife	—	New York
66	Theresa Mcgowan	7	Daughter	—	New York
67	Charles Mcgowan	5	Son	—	New York
68	Kathleen Mcgowan	0	Daughter	—	New York
69	Clyde A. Macewen	59	Head	Retired Assessor	New York
70	Livonia Macewen	54	Wife	—	New York
71	Martha Macewen	24	Daughter	Teacher	New York
72	Giles Macewen	20	Son	Attends School	New York
73	Dr. Frank Pelton	34	Head	Teacher	Pennsylvania
74	Beatrice Pelton	34	Wife	—	New York
75	Judith Pelton	2	Daughter	—	New York
76	Dr. Otto H. Voelker	42	Head	Teaching & Education	Michigan
77	Ivah Voelker	47	Wife	—	Michigan
78	Prij. E. Harold Cole	40	Head	Principal	New York
79	Mary E. Cole	41	Wife	—	New York
80	Mary Elizabeth Cole	8	Daughter	—	New York

Search for Mary Connelly

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Pedigree Summary

Mary

Gen 1 · 2 parents ~0.92

Max depth 4 (1900–1950 window)

About This Record & Model Tree

This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.

Source: National Archives and Records Administration (NARA)

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