John Mahoney — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cedar-County, Iowa

Our Model Tree links this John Mahoney across the 1920, 1930 and 1940 US Censuses in Cedar-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1894), then head of a 4-person household.

Age 46 b. ~1894 Male Head Born: Tennessee Married

1940 Census Record Details

Census Year	1940
Location	Cedar-County, Iowa
Surname	Mahoney
Given Name	John B.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	46
Marital Status	Married
Birthplace	Tennessee
1935 Residence (City)	Springdale Twp
1935 Residence (County)	Cedar
Additional Details
Occupation	Farmer
Industry	Farming
Class of Worker	OA
Hours Worked	60
Income (1939)	0
Highest Grade	Hs 4
1935 Residence	Same place
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee
Occupation	Farmer
Township / Ward	Springdale Twp
Est. Birth Year	~1894

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 John	Age	Birth yr
Doris Mahoney	Daughter	—	15	~1925
John Mahoney	Head	—	46	~1894
Kenneth Mahoney	Son	—	12	~1928
Hazel Mahoney	Spouse	—	42	~1898

Census Appearances

1920

Johnson, Iowa

Head, age 26

Johnson, Iowa · implied b. ~1894 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mahoney
Given Name	John B.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	26
Marital Status	Married
Birthplace	Tennessee
Father's Birthplace	Tennessee
Mother's Birthplace	Tennessee
Occupation	Farmer
Industry	Gen Farm
Class of Worker	OA
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	R
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee

1930

Johnson, Iowa

Head, age 37

Johnson, Iowa · implied b. ~1893 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mahoney
Given Name	John H.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	37
Marital Status	Married
Birthplace	Tennessee
Age at First Marriage	24
Father's Birthplace	Tennessee
Mother's Birthplace	Tennessee
Occupation	Farmer
Industry	General Farm
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	R
Veteran	No
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee

1940

Cedar-County, Iowa

Head, age 46

Cedar-County, Iowa · implied b. ~1894 — 4 household members

Surname	Mahoney
Given Name	John B.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	46
Marital Status	Married
Birthplace	Tennessee
1935 Residence (City)	Springdale Twp
1935 Residence (County)	Cedar
Occupation	Farmer
Industry	Farming
Class of Worker	OA
Hours Worked	60
Income (1939)	0
Highest Grade	Hs 4
1935 Residence	Same place
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee

Model Tree

Linked across censuses

Our Model Tree links John Mahoney 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 Mahoney

Head · 1940 · age 46 · b. ~1894 · Iowa

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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 — Cedar-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01145-01033)

Line	Name	Age	Relation	Occupation	Birthplace
1	Joe H. Christesen	44	Head	Farmer	Denmark
2	Agnes Christesen	40	Wife	—	Iowa
3	Henrietta Christesen	17	Daughter	—	Iowa
4	Beulah Christesen	13	Daughter	—	Iowa
5	Floyd Fawcett	28	Head	Farmer	Iowa
6	Mary Helen Fawcett	21	Wife	—	Iowa
7	Alfred Fawcett	50	Head	Farmer	Iowa
8	Malissa Fawcett	62	Mother	—	Iowa
9	Peter Jensen	46	Head	Farmer	Denmark
10	Annie Jensen	44	Wife	—	Denmark
11	Charles Jensen	17	Son	—	Iowa
12	Donald Jensen	13	Son	—	Iowa
13	Margaret Jensen	9	Daughter	—	Iowa
14	John B. Mahoney THIS PERSON	46	Head	Farmer	Tennessee
15	Hazel Mahoney	42	Wife	—	Iowa
16	Doris Mahoney	15	Daughter	—	Iowa
17	Kenneth Mahoney	12	Son	—	Iowa
18	Lawrence Green	31	Head	Farmer	Iowa
19	Edith Green	25	Wife	—	Iowa
20	John Green	1	Son	—	Iowa
21	Osvald Jensen	37	Head	Farmer	Iowa
22	Eva Jensen	37	Wife	—	Iowa
23	Donald Jensen	6	Son	—	Iowa
24	Wilber Jensen	4	Son	—	Iowa
25	Marlys Jensen	3	Daughter	—	Iowa
26	Marda Jensen	1	Daughter	—	Iowa
27	Frank Owen	63	Head	Farmer	Iowa
28	Sarah Owen	67	Wife	—	Iowa
29	Raymond Owen	35	Head	Farmer	Iowa
30	Alice Owen	34	Wife	—	Iowa
31	Richard Owen	14	Son	—	Iowa
32	Gerald Owen	12	Son	—	Iowa
33	Donald Owen	11	Son	—	Iowa
34	Howard Davis	23	Lodger	Farm Laborer	Iowa
35	William G. Enlow	63	Head	Farmer	Iowa
36	Daisy Enlow	59	Wife	—	Missouri
37	Walter Vincent	52	Lodger	Farm Laborer	Iowa
38	Joe Pargel	32	Head	Farmer	Iowa
39	Myrtle Pargel	34	Wife	—	Iowa
40	Gilbert Pargel	12	Son	—	Iowa

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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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