William Duncan — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Bronx-County, New York

Our Model Tree links this William Duncan across the 1920, 1930 and 1940 US Censuses in Bronx-County, New York (XGBoost, ~Confirmed), with identified parents Elizabeth & William — first a head (b.~1912), then head of a 3-person household.

Age 28 b. ~1912 Male Head Born: New York Married

1940 Census Record Details

Census Year	1940
Location	Bronx-County, New York
Surname	Duncan
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	28
Marital Status	Married
Birthplace	New York
1935 Residence (City)	New York City
1935 Residence (County)	Bronx
Additional Details
Occupation	Chauffeur
Industry	Trucking Inc.
Class of Worker	OA
Hours Worked	48
Income (1939)	0
Highest Grade	No 2
1935 Residence	Same House
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Occupation	Chauffeur
Township / Ward	New York City
Est. Birth Year	~1912

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 William	Age	Birth yr
Elizabeth Duncan	Daughter	—	5	~1935
William Duncan	Head	—	28	~1912
Elizabeth Duncan	Spouse	—	27	~1913

Census Appearances

1920

Bronx, New …

Son, age 8

Bronx, New York · implied b. ~1912 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Duncan
Given Name	William G
Relationship to Head	Son
Sex	M
Color / Race	White
Age	8
Marital Status	Single
Birthplace	New York
Father's Birthplace	Scotland
Mother's Birthplace	New York
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1930

Bronx, New …

Son, age 18

Bronx, New York · implied b. ~1912 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Duncan
Given Name	William
Relationship to Head	Son
Sex	M
Color / Race	White
Age	18
Marital Status	Single
Birthplace	New York
Father's Birthplace	Scotland
Mother's Birthplace	New York
Can Read/Write	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1940

Bronx-County, New …

Head, age 28

Bronx-County, New York · implied b. ~1912 — 3 household members

Surname	Duncan
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	28
Marital Status	Married
Birthplace	New York
1935 Residence (City)	New York City
1935 Residence (County)	Bronx
Occupation	Chauffeur
Industry	Trucking Inc.
Class of Worker	OA
Hours Worked	48
Income (1939)	0
Highest Grade	No 2
1935 Residence	Same House
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Model Tree available

Our Model Tree links William Duncan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Duncan (~0.92 confidence) and father William Duncan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Mother

Elizabeth Duncan

b. ~1881

Source mother

● Household · direct · ~0.92

Father

William Duncan

b. ~1881

Source father

● Household · direct · ~0.92

This person

Anchor record

William Duncan

Head · 1940 · age 28 · b. ~1912 · New York

★ You are viewing this record

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

Original Census Page

1940 US Federal Census — Bronx-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02478-00128)

Line	Name	Age	Relation	Occupation	Birthplace
41	Nicholas Torelli	59	Head	Carpenter	Italy
42	Carmela Torelli	54	Wife	—	New York
43	Marie Marrillo	37	Head	—	New York
44	Matthew Marrillo	15	Son	—	New York
45	Dolores Marrillo	10	Daughter	—	New York
46	Anthony Faske	31	Head	Asst Manager	New York
47	Vera Faske	29	Wife	—	New York
48	Jean Faske	10	Daughter	—	New York
49	Lois Faske	2	Daughter	—	New York
50	Costanzo Daria	53	Head	—	New York
51	Feldmigh Daria	None	Edna	—	H 2
52	George Daria	25	Son	Sales Clerk	New York
53	Keith Leith	34	Head	Carpenter	Canada English
54	Magdalen Leith	34	Wife	—	Illinois
55	Donald Leith	9	Son	—	New York
56	George Manson	71	Head	Carpenter	Scotland
57	Johanna Manson	42	Daughter	—	New York
58	Mabel Dechie	55	Head	Secretary	New York
59	Frank Dechie	61	Brother	Policeman	Canada English
60	Walter Dechie	66	Brother	Mate	New York
61	Jessie Dechie	50	Sister	—	New York
62	William Duncan THIS PERSON	28	Head	Chauffeur	New York
63	Elizabeth Duncan	27	Wife	—	New York
64	Elizabeth Duncan	5	Daughter	—	New York
65	John Duncan	34	Head	Chauffeur	New York
66	Patricia Duncan	33	Wife	—	New York
67	John Jr. Duncan	8	Son	—	New York
68	Jean Duncan	3	Daughter	—	New York
69	Henry Schweizer	51	Head	Musician	New York
70	Anna Schweizer	53	Wife	—	New York
71	Marie Schweizer	21	Daughter	Packer	New York
72	Eulalie Schweizer	14	Daughter	—	New York
73	Catherine Schweizer	17	Daughter	—	New York
74	William Schweizer	11	Son	—	New York
75	Augusta Wohlral	70	Head	Practical Nurse	Germany
76	James Malley	47	Lodger	Plumber	Eire
77	Horace Eaton	24	Head	Stock Clerk	New York
78	Agnes Eaton	23	Wife	Waitress	New York
79	Ronald Eaton	3	Son	—	New York
80	Judith Eaton	0	Daughter	—	New York

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Pedigree Summary

William

Gen 1 · 2 parents ~0.92

Max depth 4 (1900–1950 window)

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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