John Callahan — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Fulton-County, Georgia

Our Model Tree links this John Callahan across the 1920, 1930 and 1940 US Censuses in Fulton-County, Georgia (XGBoost, ~Confirmed), with identified parents William & Annie — first a head (b.~1911), then head of a 3-person household.

Age 29 b. ~1911 Male Head Born: Georgia Married

1940 Census Record Details

Census Year	1940
Location	Fulton-County, Georgia
Surname	Callahan
Given Name	John H.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	29
Marital Status	Married
Birthplace	Georgia
1935 Residence (City)	East Point
1935 Residence (County)	Fulton
Additional Details
Occupation	Salesman
Industry	Retail tea company
Class of Worker	PW
Hours Worked	75
Income (1939)	298
Highest Grade	Hs 4
1935 Residence	Georgia
Birth State	Georgia
Birth Country	United States
Birthplace (normalized)	georgia
Occupation	Salesman
Township / Ward	Atlanta
Est. Birth Year	~1911

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 Callahan	Head	—	29	~1911
Michael Callahan	Son	—	2	~1938
Lamartine Callahan	Spouse	—	29	~1911

Census Appearances

1920

Fulton, Georgia

Son, age 9

Fulton, Georgia · implied b. ~1911 — 14 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Callahan
Given Name	John D.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	9
Marital Status	Single
Birthplace	Georgia
Father's Birthplace	Alabama
Mother's Birthplace	Georgia
Birth State	Georgia
Birth Country	United States
Birthplace (normalized)	georgia

1930

Fulton, Georgia

Son, age 19

Fulton, Georgia · implied b. ~1911 — 12 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Callahan
Given Name	John L
Relationship to Head	Son
Sex	M
Color / Race	White
Age	19
Marital Status	Single
Birthplace	Georgia
Father's Birthplace	Alabama
Mother's Birthplace	Georgia
Occupation	Pressman
Industry	Printing Shop
Class of Worker	W
Can Read/Write	Yes
Birth State	Georgia
Birth Country	United States
Birthplace (normalized)	georgia

1940

Fulton-County, Georgia

Head, age 29

Fulton-County, Georgia · implied b. ~1911 — 3 household members

Surname	Callahan
Given Name	John H.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	29
Marital Status	Married
Birthplace	Georgia
1935 Residence (City)	East Point
1935 Residence (County)	Fulton
Occupation	Salesman
Industry	Retail tea company
Class of Worker	PW
Hours Worked	75
Income (1939)	298
Highest Grade	Hs 4
1935 Residence	Georgia
Birth State	Georgia
Birth Country	United States
Birthplace (normalized)	georgia

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: father William Callahan (~0.92 confidence) and mother Annie Callahan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Father

William Callahan

b. ~1874

Source father

● Household · direct · ~0.92

Mother

Annie Callahan

b. ~1879

Source mother

● Household · direct · ~0.92

This person

Anchor record

John Callahan

Head · 1940 · age 29 · b. ~1911 · Georgia

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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 — Fulton-County, Georgia Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00731-00613)

Line	Name	Age	Relation	Occupation	Birthplace
1	Gerald J. Hawkins	2	Son	—	Georgia
2	Charles E. Brown	65	Head	—	Michigan
3	Violet Brown	39	Wife	—	Tennessee
4	Rosie J. Brown	6	Daughter	—	Georgia
5	John D. Parnell	37	Head	Mixer	Alabama
6	Stella M. Parnell	33	Wife	—	Georgia
7	Alton L. Banks	39	Head	Soldier	Georgia
8	Ruth L. Banks	30	Wife	—	Georgia
9	Elmer E. Wilson	31	Head	Truck Driver	North Carolina
10	Marion Wilson	30	Wife	—	Georgia
11	David C. Tage	34	Head	Soldier	Georgia
12	Clovie Tage	30	Wife	Machine Operator	Georgia
13	Virginia Tage	7	Daughter	—	Georgia
14	David M. Tage	5	Son	—	Georgia
15	Mittie Tage	58	Mother	—	Georgia
16	Clinton H. Preston	24	Head	Bill Clerk	Tennessee
17	Bertha M. Preston	25	Wife	Stitcher	Georgia
18	Elmo D. Bell	46	Head	Fireman	Georgia
19	Ollie R. Bell	28	Wife	—	Georgia
20	Joseph B. Simpson	51	Head	Policeman	Georgia
21	Minnie Simpson	45	Wife	—	Georgia
22	Jack Simpson	18	Son	—	Georgia
23	William C. Simpson	16	Son	—	Georgia
24	Betty Jo Simpson	13	Daughter	—	Georgia
25	Robert E. Simpson	11	Son	—	Georgia
26	Malcolm W. Simpson	5	Son	—	Georgia
27	Janie M. Phillips	52	Son-in-law	Power Machine Operator	Georgia
28	George T. Hill	21	Head	Machine Operator	Georgia
29	Martha Hill	19	Wife	—	Georgia
30	Joyce Hill	2	Daughter	—	Georgia
31	Frank C. Smith	25	Head	Manager	Ohio
32	Margaret Smith	26	Wife	—	Georgia
33	Beverly A. Smith	2	Daughter	—	Georgia
34	Dewey D. Phillips	41	Head	Laborer	Georgia
35	Lizzie Phillips	37	Wife	Co Machine Operator	Georgia
36	Dan T. Phillips	20	Son	—	Georgia
37	John H. Callahan THIS PERSON	29	Head	Salesman	Georgia
38	Lamartine Callahan	29	Wife	—	Georgia
39	Michael L. Callahan	2	Son	—	Georgia
40	Howard M. Keith	49	Head	Salesman	Georgia

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Pedigree Summary

John

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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