Mary Fitzgerald — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Dallas-County, Iowa

Our Model Tree links this Mary Fitzgerald across the 1920, 1930 and 1940 US Censuses in Dallas-County, Iowa (XGBoost, ~Confirmed), with identified parents Michael & Pauline — first a daughter (b.~1905), then head of a 4-person household.

Age 35 b. ~1905 Female Daughter Born: Iowa Single

1940 Census Record Details

Census Year	1940
Location	Dallas-County, Iowa
Surname	Fitzgerald
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	35
Marital Status	Single
Birthplace	Iowa
1935 Residence (City)	Colfax Twp.
Additional Details
Highest Grade	H 4
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Township / Ward	Colfax Twp
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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Mary Fitzgerald	Daughter	—	35	~1905
Pauline Fitzgerald	Head	—	65	~1875
Winifred Fitzgerald	Son	—	30	~1910
Dave Fitzgerald	Son	—	28	~1912

Census Appearances

1920

Dallas, Iowa

Daughter, age 13

Dallas, Iowa · implied b. ~1907 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Fitzgerald
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	13
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Iowa
Mother's Birthplace	Iowa
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Dallas, Iowa

Daughter, age 25

Dallas, Iowa · implied b. ~1905 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Fitzgerald
Given Name	Mary E
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	25
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Iowa
Mother's Birthplace	Iowa
Can Read/Write	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Dallas-County, Iowa

Daughter, age 35

Dallas-County, Iowa · implied b. ~1905 — 4 household members

Surname	Fitzgerald
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	35
Marital Status	Single
Birthplace	Iowa
1935 Residence (City)	Colfax Twp.
Highest Grade	H 4
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Michael Fitzgerald

b. ~1873

Source father

● Household · direct · ~0.92

Mother

Pauline Fitzgerald

b. ~1875

Source mother

● Household · direct · ~0.92

This person

Anchor record

Mary Fitzgerald

Daughter · 1940 · age 35 · b. ~1905 · Iowa

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Sibling

Winifred Fitzgerald

Sibling · 1940 · age 30

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Dave Fitzgerald

Sibling · 1940 · age 28

Source co-child of head (derived)

● Co-child · derived · ~0.88

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

Original Census Page

1940 US Federal Census — Dallas-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01153-00172)

Line	Name	Age	Relation	Occupation	Birthplace
41	Corinne Hog	7	Daughter	—	Iowa
42	Lowell Hog	6	Son	—	Iowa
43	Jon Hog	4	Son	—	Iowa
44	Robert Lee Hog	1	Son	—	Iowa
45	Paul Walton	35	Head	Farmer	Iowa
46	Gladys Walton	34	Wife	—	Iowa
47	Sandra Walton	4	Daughter	—	Iowa
48	John Walton	63	Head	Farmer	Iowa
49	Belle Walton	59	Wife	—	Iowa
50	Paul Hog	37	Head	Farmer	Iowa
51	Francis Hog	37	Wife	—	Iowa
52	Hampton Hog	60	Head	Farmer	Pennsylvania
53	Mary Hog	57	Wife	—	Pennsylvania
54	Richard Hog	21	Son	Farmer	Iowa
55	R. H. Eckhardt	63	Head	Farmer	Illinois
56	Francis Eckhardt	59	Wife	—	Illinois
57	Richard Eckhardt	15	Son	—	Iowa
58	L. H. Eckhardt	29	Head	Farmer	Iowa
59	Mable Eckhardt	25	Wife	—	Kansas
60	Jerry Eckhardt	5	Son	—	Iowa
61	Robert Eckhardt	1	Son	—	Iowa
62	Charles Ronger	72	Head	Farmer	Pennsylvania
63	Martha Ronger	61	Wife	—	Illinois
64	Lawrence Chuffe	33	Head	Farmer	Iowa
65	Elsie Chuffe	19	Wife	—	Iowa
66	Lawrence Jr. Chuffe	1	Son	—	Iowa
67	L. P. Walden	33	Head	Farmer	Iowa
68	Nellie Walden	32	Wife	—	Iowa
69	Pauline Fitzgerald	65	Head	—	Iowa
70	Mary Fitzgerald THIS PERSON	35	Daughter	—	Iowa
71	Winifred Fitzgerald	30	Son	Farmer	Iowa
72	Dave Fitzgerald	28	Son	Farmer	Iowa
73	Earl Hannel	49	Head	Farmer	Iowa
74	Hazel Hannel	45	Wife	—	Iowa
75	Harry Light	37	H. Hand	Laborer	Kansas
76	Homer Gibbons	37	Head	Farmer	Iowa
77	Ruby Gibbons	37	Wife	—	Iowa
78	Leonard Gibbons	13	Son	—	Iowa
79	Leland Gibbons	12	Son	—	Iowa
80	Carolyn Gibbons	7	Daughter	—	Iowa

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Pedigree Summary

Mary + 2 siblings

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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