Mary Holt — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Middlesex-County, Massachusetts

Our Model Tree links this Mary Holt across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 4-person household.

Age 52 b. ~1888 Female Spouse Born: Finland Married

1940 Census Record Details

Census Year	1940
Location	Middlesex-County, Massachusetts
Surname	Holt
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	52
Marital Status	Married
Birthplace	Finland
1935 Residence (City)	Maynard
1935 Residence (County)	Middlesex
Naturalization Status	Naturalized
Additional Details
Class of Worker	0
Highest Grade	No 4
1935 Residence	Same house
Birth Country	Finland
Birthplace (normalized)	finland
Township / Ward	Maynard
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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Signe Hellawell	Daughter	—	27	~1913
Mary Holt	Spouse	—	52	~1888
Charles Holt	Head	—	50	~1890
Harold Hellawell	Other	—	32	~1908

Census Appearances

1920

Middlesex, Massachusetts

Spouse, age 33

Middlesex, Massachusetts · implied b. ~1887 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Holt
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	33
Marital Status	Married
Birthplace	Finland
Year of Immigration	1905
Naturalization Status	First papers filed
Father's Birthplace	Finland
Mother's Birthplace	Finland
Occupation	Weaver
Industry	Woolen mill
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Finnish
Birth Country	Finland
Birthplace (normalized)	finland

1930

Middlesex, Massachusetts

Spouse, age 43

Middlesex, Massachusetts · implied b. ~1887 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Holt
Given Name	Mary S
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Finland
Naturalization Status	Alien
Year of Immigration	1906
Age at First Marriage	23
Father's Birthplace	Finland
Mother's Birthplace	Finland
Can Read/Write	Yes
Mother Tongue	Finnish
Birth Country	Finland
Birthplace (normalized)	finland

1940

Middlesex-County, Massachusetts

Spouse, age 52

Middlesex-County, Massachusetts · implied b. ~1888 — 4 household members

Surname	Holt
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	52
Marital Status	Married
Birthplace	Finland
1935 Residence (City)	Maynard
1935 Residence (County)	Middlesex
Naturalization Status	Naturalized
Class of Worker	0
Highest Grade	No 4
1935 Residence	Same house
Birth Country	Finland
Birthplace (normalized)	finland

Model Tree

Linked across censuses

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

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This person

Anchor record

Mary Holt

Spouse · 1940 · age 52 · b. ~1888 · 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-t0627-01610-00563)

Line	Name	Age	Relation	Occupation	Birthplace
41	Charles Tourette	16	Son	—	Mass.
42	Nicholas Luca	26	Head	Dye-Finisher	Mass.
43	Helen Luca	24	Wife	—	Mass.
44	Virginia Luca	3	Daughter	—	Mass.
45	Alfred J. Delfino	22	Lodger	Laborer	Mass.
46	James O'Loughlin	23	Head	Weaver	Mass.
47	Alice O'Loughlin	23	Wife	—	Mass.
48	Barbara A. O'Loughlin	3	Daughter	—	Mass.
49	James O'Loughlin	0	Son	—	Mass.
50	Charles E. Carr	59	Head	Laborer	Mass.
51	Edith Mcgrath	60	Sister-in-law	Housekeeper	Maine
52	Henry Mcgrath	18	Nephew	Laborer	Mass.
53	Joseph Botas	46	Head	Sorter	Poland
54	Anna Botas	38	Wife	Carder	Mass.
55	Joseph Botas	19	Son	New Worker	Mass.
56	Ralph Botas	18	Son	Farm Hand	Mass.
57	Helen Botas	13	Daughter	—	Mass.
58	Anna Botas	67	Mother	—	Poland
59	Nicholas Baccari	62	Head	Dye-Finisher	Italy
60	Mary Baccari	47	Wife	—	Italy
61	Joseph Baccari	27	Son	Repairman	Mass.
62	Charles Holt	50	Head	Weaver	Finland
63	Mary Holt THIS PERSON	52	Wife	—	Finland
64	Harold Hellawell	32	Son-in-law	Dye-Finisher	Mass.
65	Signe Hellawell	27	Daughter	Sales Girl	Mass.
66	Christian Lehto	76	Head	Freight-Handler	Finland
67	Hilka Lehto	64	Wife	—	Finland
68	John Lehto	30	Son	Freight-Handler	Vermont
69	George Lehto	24	Son	Ring-Spinner	Mass.
70	Helga Lutz	30	Daughter	Twister	Vermont
71	Edna Lutz	7	Daughter	—	Mass.
72	Henry Grandell	30	Head	Bookkeeper	Finland
73	Jeanne L. Grandell	0	Daughter	—	Mass.
74	Katri Koskinen	45	Head	Weaver	Finland
75	Arne Koskinen	17	Son	—	Mass.
76	Sirkka Koskinen	13	Daughter	—	Mass.
77	Anni Kivinen	None	Head	—	—
78	John Perillo	44	Head	Weaver	Italy
79	Amelia Perillo	37	Wife	—	Mass.
80	Guy Perillo	19	Son	Dyer	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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