John Callahan — 1940 US Census Record

Model Tree available

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

Our Model Tree links this John Callahan across the 1920, 1930 and 1940 US Censuses in Saratoga-County, New York (XGBoost, ~Confirmed), with identified parents Margaret — first a son (b.~1905), then head of a 2-person household.

Age 35 b. ~1905 Male Son Born: New York Single

1940 Census Record Details

Census Year	1940
Location	Saratoga-County, New York
Surname	Callahan
Given Name	John J.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	35
Marital Status	Single
Birthplace	New York
1935 Residence (City)	Moreau
1935 Residence (County)	Saratoga
Additional Details
Occupation	Farmer
Industry	Farming
Class of Worker	OA
Hours Worked	40
Income (1939)	0
Highest Grade	8
1935 Residence	Same place
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Occupation	Farmer
Township / Ward	Moreau
Est. Birth Year	~1905

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 John	Age	Birth yr
Margaret Callahan	Head	—	64	~1876
John Callahan	Son	—	35	~1905

Census Appearances

1920

Saratoga, New …

Son, age 15

Saratoga, New York · implied b. ~1905 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Callahan
Given Name	John J.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	15
Marital Status	Single
Birthplace	New York
Father's Birthplace	New York
Mother's Birthplace	New York
Occupation	farm laborer
Industry	home farm
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1930

Saratoga, New …

Son, age 25

Saratoga, New York · implied b. ~1905 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Callahan
Given Name	John J.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	25
Marital Status	Single
Birthplace	New York
Father's Birthplace	New York
Mother's Birthplace	New York
Occupation	Farmer
Industry	Dairy farm
Class of Worker	W
Can Read/Write	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1940

Saratoga-County, New …

Son, age 35

Saratoga-County, New York · implied b. ~1905 — 2 household members

Surname	Callahan
Given Name	John J.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	35
Marital Status	Single
Birthplace	New York
1935 Residence (City)	Moreau
1935 Residence (County)	Saratoga
Occupation	Farmer
Industry	Farming
Class of Worker	OA
Hours Worked	40
Income (1939)	0
Highest Grade	8
1935 Residence	Same place
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Mother

Margaret Callahan

b. ~1876

Source mother

● Household · direct · ~0.92

This person

Anchor record

John Callahan

Son · 1940 · age 35 · b. ~1905 · New York

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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 — Saratoga-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02773-00150)

Line	Name	Age	Relation	Occupation	Birthplace
41	Earl Lillifield	21	Hired boy	Farm Hand	New York
42	Albert Marlone	36	Head	Farmer	Oklahoma
43	Loretta Marlone	25	Wife	—	Oklahoma
44	Ruth Strong	20	Head	Housework	New York
45	Leon Strong	19	Hired boy	Farm Hand	New York
46	Charles Prince	72	Lodger	—	New York
47	Ralph Sorte	34	Head	Mason	New York
48	Ruth Sorte	30	Wife	—	New York
49	Agnes Sorte	10	Daughter	—	New York
50	Shirley Sorte	8	Daughter	—	New York
51	Elwood Dickinson	47	Head	Farmer	New York
52	Nellie Dickinson	43	Wife	—	New York
53	Lyle Dickinson	22	Son	Farm Hand	New York
54	Lawrence Dickinson	17	Son	—	New York
55	Katherine Dickinson	9	Daughter	—	New York
56	Lloyd Dickinson	6	Son	—	New York
57	Frank Morrisey	72	Uncle	—	New York
58	George Strong	39	Head	Laborer	New York
59	Beatrice Strong	30	Wife	—	New York
60	Adona Strong	12	Daughter	—	New York
61	Frederick Strong	10	Son	—	New York
62	Jane Strong	3	Daughter	—	New York
63	Gordon Strong	2	Son	—	New York
64	Amy Strong	71	Mother	—	New York
65	Allen Ballard	40	Head	Farmer	New Jersey
66	Ella Ballard	79	Mother	—	New York
67	Burton Wells	52	Head	Laborer	New York
68	Elizabeth Wells	35	Wife	—	New York
69	Floyd Hill	35	Head	Farm Hand	New York
70	Madelyn Hill	28	Wife	—	New York
71	Dorothy Hill	9	Daughter	—	New York
72	Charles Hill	3	Son	—	New York
73	Henry Knowlton	59	Head	—	New York
74	Lena Knowlton	57	Wife	—	New York
75	Grace Knowlton	20	Daughter	Housework	New York
76	Robert Knowlton	4	Son	—	New York
77	Eliza Knowlton	75	Mother	—	New York
78	Margaret Callahan	64	Head	—	New York
79	John J. Callahan THIS PERSON	35	Son	Farmer	New York
80	Arthur Sherman	65	Head	—	New York

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Pedigree Summary

John

Gen 1 · 1 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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