John Welch — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Middlesex-County, Massachusetts

Our Model Tree links this John Welch across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 3-person household.

Age 53 b. ~1887 Male Head Born: Ireland Married

1940 Census Record Details

Census Year	1940
Location	Middlesex-County, Massachusetts
Surname	Welch
Given Name	John J.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	Watertown Town
1935 Residence (County)	Middlesex
Naturalization Status	Naturalized
Additional Details
Occupation	Fireman
Industry	Town of Watertown
Class of Worker	PW
Hours Worked	40
Income (1939)	1700
Highest Grade	8
1935 Residence	Same Place
Birth Country	Ireland
Birthplace (normalized)	ireland
Occupation	Fireman
Township / Ward	Watertown Town
Est. Birth Year	~1887

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.

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

Name	Relation to head	Relative to John	Age	Birth yr
John Welch	Head	—	53	~1887
Flora Welch	Other	—	24	~1916
John Welch	Son	—	27	~1913

Census Appearances

1920

Middlesex, Massachusetts

Head, age 32

Middlesex, Massachusetts · implied b. ~1888 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Welch
Given Name	John J
Relationship to Head	Head
Sex	M
Color / Race	White
Age	32
Marital Status	Married
Birthplace	Ireland
Year of Immigration	1892
Naturalization Status	Naturalized
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Fireman
Industry	Municipal
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Irish
Home Owned/Rented	R
Birth Country	Ireland
Year of Naturalization	1912
Birthplace (normalized)	ireland

1930

Middlesex, Massachusetts

Head, age 43

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

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Welch
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Naturalized
Year of Immigration	1900
Age at First Marriage	21
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Conductor
Industry	Elec Railway
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	$400
Radio Set	R
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

Middlesex-County, Massachusetts

Head, age 53

Middlesex-County, Massachusetts · implied b. ~1887 — 3 household members

Surname	Welch
Given Name	John J.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	Watertown Town
1935 Residence (County)	Middlesex
Naturalization Status	Naturalized
Occupation	Fireman
Industry	Town of Watertown
Class of Worker	PW
Hours Worked	40
Income (1939)	1700
Highest Grade	8
1935 Residence	Same Place
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

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

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This person

Anchor record

John Welch

Head · 1940 · age 53 · b. ~1887 · 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-t0627-01620-00312)

Line	Name	Age	Relation	Occupation	Birthplace
1	Lorraine Butler	11	Daughter	—	Mass.
2	Richard Butler	7	Son	—	Mass.
3	Virginia Butler	5	Daughter	—	Mass.
4	Louis M. Holt	39	Head	Milk Deliverer	Mass.
5	Helen B. Holt	31	Wife	—	Mass.
6	Kenneth Holt	3	Son	—	Mass.
7	Richard Holt	9	Son	—	Mass.
8	Andrew Porti	37	Head	Shipper	Italy
9	Ethel M. Porti	35	Wife	—	Mass.
10	Andrew Jr. Porti	14	Son	—	Mass.
11	Richard J. Porti	12	Son	—	Mass.
12	Thomas F. Maloney	43	Head	Accountant	Mass.
13	Rose Maloney	37	Wife	—	Eng. Canada
14	Clare Maloney	9	Daughter	—	Mass.
15	Francis Maloney	6	Son	—	Mass.
16	Elizabeth Chaisson	64	Mother-in-law	—	England
17	Arthur Lambert	45	Head	Die Maker	New Hampshire
18	Gertrude Lambert	37	Wife	—	Mass.
19	Bertha M. Barnes	65	Mother-in-law	—	New Hampshire
20	Lovett Swimm	40	Head	Rubber Worker	Canada
21	Margaret Swimm	39	Wife	Rubber Worker	Canada
22	Ivan E. Swimm	18	Son	—	Canada
23	Lovett Jr. Swimm	14	Son	—	Mass.
24	John J. Welch THIS PERSON	53	Head	Fireman	Ireland
25	John J. Jr. Welch	27	Son	Tester	Mass.
26	Flora M. Welch	24	Daughter-in-law	—	Mass.
27	Frank Dixon	47	Head	Conductor	Eng. Canada
28	Georgia Dixon	46	Wife	—	Eng. Canada
29	Burton Dixon	17	Son	—	Eng. Canada
30	Herbert Scott	31	Head	Hairdressing	Mass.
31	Rose M. Scott	31	Wife	—	Mass.
32	Barbara Scott	5	Daughter	—	Mass.
33	Beverly Scott	3	Daughter	—	Mass.
34	Arthur J. Gallery	29	Head	Theatrical Treasurer	Mass.
35	Sally Gallery	27	Wife	—	Ireland
36	Sally Ann Gallery	3	Daughter	—	Mass.
37	Rose Mary Gallery	2	Daughter	—	Mass.
38	Loren F. Sanders	32	Head	Store Clerk	Mass.
39	Margaret Sanders	32	Wife	—	Ireland
40	Evelyn Sanders	10	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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