Mary Holland — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Winnebago-County, Iowa

Our Model Tree links this Mary Holland across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 5-person household.

Age 53 b. ~1887 Female Spouse Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Winnebago-County, Iowa
Surname	Holland
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Winnebago
1935 Residence (County)	Winnebago
Additional Details
Income (1939)	0
Highest Grade	No 6
1935 Residence	Iowa
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Township / Ward	Lake Mills Town
Est. Birth Year	~1887

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Mike Holland	Head	—	75	~1865
Pedrean Petersen	Other	—	26	~1914
Roger Petersen	Son	—	2	~1938
Elnora Petersen	Spouse	—	20	~1920
Mary Holland	Spouse	—	53	~1887

Census Appearances

1920

Winnebago, Iowa

Spouse, age 30

Winnebago, Iowa · implied b. ~1890 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Holland
Given Name	Mary B
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	30
Marital Status	Married
Birthplace	Iowa
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Winnebago, Iowa

Spouse, age 41

Winnebago, Iowa · implied b. ~1889 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Holland
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	41
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	21
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read/Write	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Winnebago-County, Iowa

Spouse, age 53

Winnebago-County, Iowa · implied b. ~1887 — 5 household members

Surname	Holland
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Winnebago
1935 Residence (County)	Winnebago
Income (1939)	0
Highest Grade	No 6
1935 Residence	Iowa
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Linked across censuses

Our Model Tree links Mary Holland across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Mary Holland

Spouse · 1940 · age 53 · b. ~1887 · 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 — Winnebago-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01213-00058)

Line	Name	Age	Relation	Occupation	Birthplace
1	Grace Grasley	41	Head	Trained Nurse	Iowa
2	Audrey Anderson	79	Aunt	—	Norway
3	Howard Lee Johnson	8	Nephew	—	Iowa
4	Thomas Fadness	45	Lodger	Waiter	Iowa
5	Fred Gennet	70	Lodger	—	Iowa
6	Mike O'Keen	69	Lodger	—	Iowa
7	Head Simonfirtland	None	M	Building Transp	—
8	Anna Simonfirtland	38	Wife	—	Norway
9	Lila Simonfirtland	15	Daughter	—	Iowa
10	Gerald Simonfirtland	11	Son	—	Iowa
11	Elaine Simonfirtland	8	Daughter	—	Iowa
12	Ole C. Anderson	79	Head	—	Norway
13	Tilda Anderson	70	Wife	—	Norway
14	Clarence Anderson	34	Son	Laborer	Iowa
15	Walter P. Anderson	32	Son	Agra. Lector	Iowa
16	Jana E. Kjetuen	44	Head	Proprietor	Iowa
17	Christian Erickson	55	Son-in-law	Assistant Post. Master	Minnesota
18	Mabel Erickson	50	Daughter	Manager	Iowa
19	Gwendolyn Erickson	17	Granddaughter	—	Idaho
20	Hiram Tulp	74	Head	—	Germany
21	Charles Taylor	19	Lodger	Waiter	Iowa
22	Fred Smith	49	Lodger	—	Iowa
23	Bessie Smith	52	Lodger	—	Iowa
24	Albert Felland	54	Head	Laborer	Iowa
25	John Olerud	69	Lodger	Carpenter	Norway
26	Isabelle Richards	35	Lodger	Saleslady	Iowa
27	Bennie Johnson	43	Lodger	—	Iowa
28	Mike Holland	75	Head	Blind Pensioner	Iowa
29	Mary Holland THIS PERSON	53	Wife	—	Iowa
30	Pedrean Petersen	26	Son-in-law	Laborer	Iowa
31	Elnora Petersen	20	Wife	—	Iowa
32	Roger Petersen	2	Son	—	Iowa
33	Ole V. E. Bilstead	66	Head	Retired Carrier	Iowa
34	Dena Bilstead	52	Wife	—	Iowa
35	Volberg Bilstead	24	Daughter	Teacher	Iowa
36	Virginia Bilstead	21	Daughter	Teacher	Iowa
37	Verdon Bilstead	19	Son	Picture Projector	Iowa
38	Jens Jensen	40	Head	Salesman	Iowa
39	Joy Jensen	29	Brother	Salesman	Iowa
40	Marguerite Jensen	22	Wife	—	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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