Mary Dwyer — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Middlesex-County, Massachusetts

Our Model Tree links this Mary Dwyer across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 9-person household.

Age 54 b. ~1886 Female Spouse Born: New Hampshire Married

1940 Census Record Details

Census Year	1940
Location	Middlesex-County, Massachusetts
Surname	Dwyer
Given Name	Mary E.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	54
Marital Status	Married
Birthplace	New Hampshire
1935 Residence (City)	Cambridge City
1935 Residence (County)	Middlesex
Additional Details
Income (1939)	0
Highest Grade	H-4
1935 Residence	Same place
Birth State	New Hampshire
Birth Country	United States
Birthplace (normalized)	new hampshire
Township / Ward	Cambridge City
Est. Birth Year	~1886

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Eleanor Young	Other	—	16	~1924
Lillian Sullivan	Daughter	—	26	~1914
Raymond Norton	Other	—	18	~1922
Anna Dwyer	Daughter	—	26	~1914
Edgar Dwyer	Son	—	18	~1922
Mary Dwyer	Head	—	67	~1873
William Norton	Other	—	16	~1924
Mary Dwyer	Spouse	—	54	~1886
Ruth Norton	Daughter	—	32	~1908

Census Appearances

1930

Suffolk, Massachusetts

Other, age 43

Suffolk, Massachusetts · implied b. ~1887 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Dwyer
Given Name	Marion W
Relationship to Head	Wife-H
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	New Hampshire
Age at First Marriage	23
Father's Birthplace	New Hampshire
Mother's Birthplace	New Hampshire
Occupation	none
Can Read/Write	Yes
Birth State	New Hampshire
Birth Country	United States
Birthplace (normalized)	new hampshire

1940

Middlesex-County, Massachusetts

Spouse, age 54

Middlesex-County, Massachusetts · implied b. ~1886 — 9 household members

Surname	Dwyer
Given Name	Mary E.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	54
Marital Status	Married
Birthplace	New Hampshire
1935 Residence (City)	Cambridge City
1935 Residence (County)	Middlesex
Income (1939)	0
Highest Grade	H-4
1935 Residence	Same place
Birth State	New Hampshire
Birth Country	United States
Birthplace (normalized)	new hampshire

Model Tree

Linked across censuses

Our Model Tree links Mary Dwyer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Mary Dwyer

Spouse · 1940 · age 54 · b. ~1886 · Massachusetts

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

Original Census Page

1940 US Federal Census — Middlesex-County, Massachusetts Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01685-00063)

Line	Name	Age	Relation	Occupation	Birthplace
1	John Neil	36	Head	Truck Driver	Mass.
2	Mildred Neil	30	Wife	—	Mass.
3	Barbara Neil	5	Daughter	—	Mass.
4	Mildred Neil	3	Daughter	—	Mass.
5	Francis Neil	0	Son	—	Mass.
6	William Mahoney	36	Head	Porter	England
7	Elizabeth Mahoney	36	Wife	—	England
8	William J. Mahoney	2	Son	—	Mass.
9	Mary Dwyer	67	Head	—	Vermont
10	Mary E. Dwyer THIS PERSON	54	Wife	—	New Hampshire
11	Anna Dwyer	26	Daughter	Threader	Mass.
12	Edgar Dwyer	18	Son	—	Mass.
13	Ruth Norton	32	Daughter	Sanders	Mass.
14	Raymond Norton	18	Grandson	—	Mass.
15	William J. Norton	16	Grandson	—	Mass.
16	Lillian Sullivan	26	Daughter	Sanders	Mass.
17	Eleanor Young	16	Grandchild	—	Mass.
18	George Slattery	45	Head	Cook	New Jersey
19	Kathleen Slattery	40	Wife	Waitress	New Jersey
20	Louise Slattery	18	Daughter	Shoe Worker	New Jersey
21	John Slattery	12	Son	—	Mass.
22	Joseph Slattery	6	Son	—	Mass.
23	May Bingham	46	Head	Porter	Penn.
24	Ruth Bingham	41	Wife	—	Penn.
25	May Bingham	22	Daughter	Teacher	Penn.
26	William Bingham	17	Son	—	Mass.
27	Lavinia Bingham	16	Daughter	—	Mass.
28	Lafayette Bingham	14	Son	—	Mass.
29	May Bingham	12	Daughter	—	Mass.
30	Ruth Bingham	11	Daughter	—	Mass.
31	George Bingham	9	Son	—	Mass.
32	John Bingham	7	Son	—	Mass.
33	Frances Bingham	2	Daughter	—	Mass.
34	Eva Goldman	24	Niece	Instructor	Penn.
35	Barbara Goldman	4	Niece	—	Penn.
36	John Hart	36	Head	Sheet Metal W.	Canada-English
37	Linnie Hart	35	Wife	—	Canada-Eng.
38	John Hart	5	Son	—	Mass.
39	George Hart	3	Son	—	Mass.
40	Mary Hart	0	Daughter	—	Mass.

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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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