Robert May — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Polk-County, Iowa

Our Model Tree links this Robert May across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Robert & Lucy — first a head (b.~1911), then head of a 4-person household.

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

1940 Census Record Details

Census Year	1940
Location	Polk-County, Iowa
Surname	May
Given Name	Robert
Relationship to Head	Head
Sex	M
Color / Race	White
Age	29
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Des Moines City
1935 Residence (County)	Polk
Additional Details
Occupation	Printer
Industry	Printing Co
Class of Worker	PW
Hours Worked	40
Income (1939)	2300
Highest Grade	H-4
1935 Residence	Same House
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Printer
Township / Ward	Des Moines City
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.

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

Name	Relation to head	Relative to Robert	Age	Birth yr
Bruce Champion	Son	—	11	~1929
Lucy May	Spouse	—	28	~1912
Mabel Champion	Spouse	—	42	~1898
Robert May	Head	—	29	~1911

Census Appearances

1920

Polk, Iowa

Son, age 8

Polk, Iowa · implied b. ~1912 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	May
Given Name	Robert B Jr
Relationship to Head	Son
Sex	M
Color / Race	White
Age	8
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Iowa
Mother's Birthplace	Iowa
Can Read	Yes
Speaks English	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Polk, Iowa

Son, age 19

Polk, Iowa · implied b. ~1911 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	May
Given Name	Robert Bruce Jr
Relationship to Head	Son
Sex	M
Color / Race	White
Age	19
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

Polk-County, Iowa

Head, age 29

Polk-County, Iowa · implied b. ~1911 — 4 household members

Surname	May
Given Name	Robert
Relationship to Head	Head
Sex	M
Color / Race	White
Age	29
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Des Moines City
1935 Residence (County)	Polk
Occupation	Printer
Industry	Printing Co
Class of Worker	PW
Hours Worked	40
Income (1939)	2300
Highest Grade	H-4
1935 Residence	Same House
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Robert May

b. ~1870

Source father

● Household · direct · ~0.92

Mother

Lucy May

b. ~1872

Source mother

● Household · direct · ~0.92

This person

Anchor record

Robert May

Head · 1940 · age 29 · b. ~1911 · 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 — Polk-County, Iowa Open full size

Page Contents

38 people indexed on this census page (nara:1940:m-t0627-01193-00556)

Line	Name	Age	Relation	Occupation	Birthplace
41	Elizabeth Kempkes	48	Wife	Clerk	Iowa
42	Robert Kempkes	23	Son	Clerk	Iowa
43	Ruth Kempkes	21	Daughter	Stenographer	Iowa
44	Walter Parsons	76	Head	Retired	Iowa
45	Mary Parsons	74	Wife	—	Iowa
46	Harry Williams	54	Head	—	Iowa
47	Jessie Williams	36	Wife	—	Iowa
48	Leonard Anderson	39	Head	Salesman	Iowa
49	Dorothy Anderson	32	Wife	—	Iowa
50	Jerry Anderson	4	Son	—	Iowa
51	Robert May THIS PERSON	29	Head	Printer	Iowa
52	Lucy May	28	Wife	—	Iowa
53	Mabel Champion	42	Wife	Secretary	Iowa
54	Bruce Champion	11	Son	—	Iowa
55	John M Bowler	55	Head	Salesman	Massachusetts
56	Elizabeth Bowler	54	Wife	—	Connecticut
57	John L Bowler	25	Son	—	Iowa
58	Ward Bowler	21	Son	—	Iowa
59	Donald Bowler	19	Son	—	Iowa
60	Daniel Power	70	Head	—	New York
61	Margaret Haehl	72	Sister	—	New York
62	George Hamlin	36	Head	Field Supervisor	Iowa
63	Mildred Hamlin	27	Wife	—	Iowa
64	George Jr Hamlin	0	Son	—	Iowa
65	Ella Haver	53	Mother	—	Iowa
66	John A Klyne	52	Head	—	Iowa
67	Angie Klyne	46	Wife	—	Iowa
68	Francis Klyne	26	Son	—	Iowa
69	Cecelia Klyne	25	Daughter	Comptometer Operator	Iowa
70	James Klyne	19	Son	—	Iowa
71	Richard Klyne	16	Son	—	Iowa
72	John Klyne	14	Son	—	Iowa
73	Jacqueline Klyne	10	Daughter	—	Iowa
74	George Swartzbaugh	29	Head	Osteopath	Ohio
75	Agnes Swartzbaugh	28	Wife	Bookkeeper	Iowa
76	Robert Parley	50	Head	Buyer	Illinois
77	Elsa Parley	45	Wife	—	Illinois
78	Lois Parley	15	Daughter	—	Illinois

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Pedigree Summary

Robert

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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