William Underwood — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Middlesex-County, Massachusetts

Our Model Tree links this William Underwood across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 4-person household.

Age 65 b. ~1875 Male Head Born: Vermont Married

1940 Census Record Details

Census Year	1940
Location	Middlesex-County, Massachusetts
Surname	Underwood
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	65
Marital Status	Married
Birthplace	Vermont
1935 Residence (City)	Marlborough City
1935 Residence (County)	Middlesex
Additional Details
Occupation	Laborer
Industry	Forestry
Class of Worker	PW
Hours Worked	0
Income (1939)	493
Highest Grade	No 8
1935 Residence	Same Place
Birth State	Vermont
Birth Country	United States
Birthplace (normalized)	vermont
Occupation	Laborer
Township / Ward	Marlborough City
Est. Birth Year	~1875

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 William	Age	Birth yr
Grace Underwood	Daughter	—	32	~1908
Ella Underwood	Spouse	—	62	~1878
Marcus Underwood	Son	—	27	~1913
William Underwood	Head	—	65	~1875

Census Appearances

1920

Worcester, Massachusetts

Head, age 44

Worcester, Massachusetts · implied b. ~1876 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Underwood
Given Name	William J
Relationship to Head	Head
Sex	M
Color / Race	White
Age	44
Marital Status	Married
Birthplace	Vermont
Father's Birthplace	Vermont
Mother's Birthplace	Vermont
Occupation	Teamster
Industry	Grain Mill
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Vermont
Birth Country	United States
Birthplace (normalized)	vermont

1930

Middlesex, Massachusetts

Head, age 55

Middlesex, Massachusetts · implied b. ~1875 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Underwood
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	55
Marital Status	Married
Birthplace	Vermont
Age at First Marriage	24
Father's Birthplace	Vermont
Mother's Birthplace	Vermont
Occupation	Salesman
Industry	Grain Company
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	30
Radio Set	R
Veteran	No
Birth State	Vermont
Birth Country	United States
Birthplace (normalized)	vermont

1940

Middlesex-County, Massachusetts

Head, age 65

Middlesex-County, Massachusetts · implied b. ~1875 — 4 household members

Surname	Underwood
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	65
Marital Status	Married
Birthplace	Vermont
1935 Residence (City)	Marlborough City
1935 Residence (County)	Middlesex
Occupation	Laborer
Industry	Forestry
Class of Worker	PW
Hours Worked	0
Income (1939)	493
Highest Grade	No 8
1935 Residence	Same Place
Birth State	Vermont
Birth Country	United States
Birthplace (normalized)	vermont

Model Tree

Linked across censuses

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

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This person

Anchor record

William Underwood

Head · 1940 · age 65 · b. ~1875 · 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-t0627-01610-00301)

Line	Name	Age	Relation	Occupation	Birthplace
1	Susan Howe	89	Head	—	Canada Eng
2	Susan Huntly	54	Meece	—	Canada Eng
3	Susan Bathum	67	Head	—	New Hamp
4	Arthur Lafleur	32	Head	Printer	Mass
5	Blanche Lafleur	28	Wife	—	Mass
6	Arthur Lafleur	2	Son	—	—
7	Barbara Lafleur	1	Daughter	—	—
8	Emily Fairbanks	71	Head	—	Mass
9	Valerie Gregory	66	Head	Housework	Mass
10	Rita Gregory	24	Daughter	—	Mass
11	Raymond Gregory	15	Son	Shoeworker	Mass
12	Head Willow	None	M	—	—
13	Amelia Willow	23	Wife	—	Mass
14	Sandra Willow	1	Daughter	—	—
15	Robert Willow	12	Son	—	—
16	William Underwood THIS PERSON	65	Head	Laborer	Vermont
17	Ella Underwood	62	Wife	—	Mass
18	Grace Underwood	32	Daughter	Housework	Mass
19	Marcus Underwood	27	Son	Stock Man	Mass
20	Mary A. Lawrence	80	Head	—	Mass
21	Helen Simpson	52	Daughter	—	Mass
22	Frank E. King	59	Head	Grocery Clerk	England
23	Mary King	55	Wife	—	Mass
24	Mary E. Mccarthy	50	Head	—	Mass
25	Vernon Clarke	25	Boarder	Civil Engineer	Mass
26	Courtland Craswell	32	Boarder	Geologist	Mass
27	Margaret Nugent	69	Boarder	—	Mass
28	John E. Hoyle	70	Head	Shoe Worker	Mass
29	Theresa Hoyle	65	Wife	—	Mass
30	John J. Fahey	50	Head	Printer	Mass
31	Nellie Fahey	48	Wife	—	Mass
32	Robert J. Fahey	21	Son	—	Mass
33	Eleanor R. Fahey	17	Daughter	—	Mass
34	Eliza M. Mccarty	75	Mother	—	Mass
35	Marietta Powers	78	Head	—	New York
36	Regina M. Powers	43	Daughter	—	Mass
37	Mary Crosby	42	Head	Proof Reader	Mass
38	Eleanor Crosby	31	Sister	Teacher	Mass
39	Ralph Bonin	26	Head	Machinist	Mass
40	Blanche Bonin	24	Wife	Waitress	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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