Margaret Cook — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Middlesex-County, Massachusetts

Our Model Tree links this Margaret Cook across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 2-person household.

Age 73 b. ~1867 Female Head Born: England Widowed

1940 Census Record Details

Census Year	1940
Location	Middlesex-County, Massachusetts
Surname	Cook
Given Name	Margaret J.
Relationship to Head	Head
Sex	F
Color / Race	White
Age	73
Marital Status	Widowed
Birthplace	England
1935 Residence (City)	Medford
1935 Residence (County)	Middlesex
Naturalization Status	Naturalized
Additional Details
Income (1939)	0
Highest Grade	No 7
1935 Residence	Same Place
Birth Country	England
Birthplace (normalized)	england
Township / Ward	Medford
Est. Birth Year	~1867

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 Margaret	Age	Birth yr
Margaret Cook	Head	—	73	~1867
James Cook	Son	—	39	~1901

Census Appearances

1920

Middlesex, Massachusetts

Spouse, age 52

Middlesex, Massachusetts · implied b. ~1868 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cook
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	52
Marital Status	Married
Birthplace	England
Year of Immigration	1875
Naturalization Status	Naturalized
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	England
Year of Naturalization	1875
Birthplace (normalized)	england

1930

Middlesex, Massachusetts

Other, age 63

Middlesex, Massachusetts · implied b. ~1867 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cook
Given Name	Margaret J.
Relationship to Head	Wife-H
Sex	F
Color / Race	White
Age	63
Marital Status	Married
Birthplace	England
Naturalization Status	Naturalized
Year of Immigration	1870
Age at First Marriage	19
Father's Birthplace	Irish Free State
Mother's Birthplace	Irish Free State
Occupation	none
Can Read/Write	Yes
Mother Tongue	English
Veteran	no
Birth Country	England
Birthplace (normalized)	england

1940

Middlesex-County, Massachusetts

Head, age 73

Middlesex-County, Massachusetts · implied b. ~1867 — 2 household members

Surname	Cook
Given Name	Margaret J.
Relationship to Head	Head
Sex	F
Color / Race	White
Age	73
Marital Status	Widowed
Birthplace	England
1935 Residence (City)	Medford
1935 Residence (County)	Middlesex
Naturalization Status	Naturalized
Income (1939)	0
Highest Grade	No 7
1935 Residence	Same Place
Birth Country	England
Birthplace (normalized)	england

Model Tree

Linked across censuses

Our Model Tree links Margaret Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Margaret Cook

Head · 1940 · age 73 · b. ~1867 · 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-t0627-01611-00017)

Line	Name	Age	Relation	Occupation	Birthplace
1	Etta D. Klein	28	Wife	Clerk	Massachusetts
2	Mark C. Anderson	31	Head	Checker	Massachusetts
3	Olga P. Anderson	24	Wife	—	Massachusetts
4	Mark C. Anderson	1	Son	—	Massachusetts
5	Arthur C. Bruiger	57	Head	Salesman	Massachusetts
6	Mabel W. Bruiger	45	Wife	Shop Manager	Massachusetts
7	Helen R. Cronin	45	Head	Salesgirl	Massachusetts
8	Catherine Conroy	44	Head	Saleslady	Massachusetts
9	Arthur Casa	29	Head	Printer	Massachusetts
10	Phyllis Casa	22	Wife	—	Massachusetts
11	Reynold Casa	27	Head	Hairdresser	Massachusetts
12	Honora P. Casa	24	Wife	Hairdresser	Massachusetts
13	Frank Balachowsky	31	Head	Chauffeur	Poland
14	Joseph N. Macdonald	28	Head	Ship Painter	Massachusetts
15	Anna C. Macdonald	28	Wife	Checker	Massachusetts
16	Albert Bernstein	42	Head	Store Dealer	Massachusetts
17	Laura Bernstein	37	Wife	Bookkeeper	Massachusetts
18	James H. Duchane	60	Head	Cleaner	Rhode Island
19	Elvira Duchane	29	Wife	—	Massachusetts
20	Augusta R. Curley	40	Head	Ledger Clerk	Massachusetts
21	William R. Doyle	36	Head	Carpenter	Canada-English
22	Carl A. Carlson	41	Head	—	Massachusetts
23	Mercie Carlson	43	Wife	Pianist	Massachusetts
24	Herbert Pollock	35	Lodger	Laundryman	Massachusetts
25	Charles M. Lamb	25	Head	Trainman	Massachusetts
26	Edith D. Lamb	27	Wife	—	Massachusetts
27	Charles M. Lamb	0	Son	—	Massachusetts
28	Joseph N. Kelley	48	Head	Pipe Layer	Massachusetts
29	Mary C. Kelley	41	Wife	—	Massachusetts
30	R. Helen Isaac	34	Head	Stenographer	New York
31	Eugene A. O'Brien	43	Head	Truck Driver	Massachusetts
32	Thomas L. O'Brien	41	Brother	Truck Driver	Massachusetts
33	Mary G. O'Brien	39	Sister	Dancer	Massachusetts
34	G. Fathrop Smith	35	Head	—	Massachusetts
35	Charles W. Hickey	30	Head	Riggers Helper	Massachusetts
36	Mary E. Hickey	26	Wife	Scaler	Massachusetts
37	Ruth M. Cunningham	36	Head	Grad Nurse	Massachusetts
38	Ruth L. Cunningham	7	Daughter	—	Massachusetts
39	Margaret J. Cook THIS PERSON	73	Head	—	England
40	James M. Cook	39	Son	Repairman	Massachusetts

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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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