William Donovan — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Hamilton-County, Ohio

Our Model Tree links this William Donovan across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed), with identified parents Daniel & Mabel — first a son (b.~1909), then head of a 4-person household.

Age 31 b. ~1909 Male Son Born: Ohio Single

1940 Census Record Details

Census Year	1940
Location	Hamilton-County, Ohio
Surname	Donovan
Given Name	William
Relationship to Head	Son
Sex	M
Color / Race	White
Age	31
Marital Status	Single
Birthplace	Ohio
1935 Residence (City)	Cincinnati
1935 Residence (County)	Hamilton
Additional Details
Occupation	Caddie
Industry	Golf Course
Class of Worker	PW
Hours Worked	24
Highest Grade	H-4
1935 Residence	Same Place
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio
Occupation	Caddie
Township / Ward	Cincinnati
Est. Birth Year	~1909

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 William	Age	Birth yr
Mabel Donovan	Spouse	—	47	~1893
William Donovan	Son	—	31	~1909
Daniel Donovan	Head	—	48	~1892
Richard Donovan	Son	—	23	~1917

Census Appearances

1920

Hamilton, Ohio

Son, age 10

Hamilton, Ohio · implied b. ~1910 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Donovan
Given Name	William
Relationship to Head	Son
Sex	M
Color / Race	White
Age	10
Marital Status	Single
Birthplace	Ohio
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1930

Hamilton, Ohio

Son, age 21

Hamilton, Ohio · implied b. ~1909 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Donovan
Given Name	William
Relationship to Head	Son
Sex	M
Color / Race	White
Age	21
Marital Status	Single
Birthplace	Ohio
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Occupation	Caddy
Industry	Golf
Class of Worker	W
Can Read/Write	Yes
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1940

Hamilton-County, Ohio

Son, age 31

Hamilton-County, Ohio · implied b. ~1909 — 4 household members

Surname	Donovan
Given Name	William
Relationship to Head	Son
Sex	M
Color / Race	White
Age	31
Marital Status	Single
Birthplace	Ohio
1935 Residence (City)	Cincinnati
1935 Residence (County)	Hamilton
Occupation	Caddie
Industry	Golf Course
Class of Worker	PW
Hours Worked	24
Highest Grade	H-4
1935 Residence	Same Place
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Daniel Donovan

b. ~1891

Source father

● Household · direct · ~0.92

Mother

Mabel Donovan

b. ~1893

Source mother

● Household · direct · ~0.92

This person

Anchor record

William Donovan

Son · 1940 · age 31 · b. ~1909 · Ohio

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Sibling

Richard Donovan

Sibling · 1940 · age 23

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 — Hamilton-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03199-00688)

Line	Name	Age	Relation	Occupation	Birthplace
41	Joseph Murphy	37	Head	Truck Driver	Ohio
42	Eileen Murphy	36	Wife	—	Kentucky
43	Wilbur E. Klosterman	27	Head	Police Officer	Ohio
44	Alice Klosterman	25	Wife	—	Ohio
45	Shirley Jeanne Klosterman	7	Daughter	—	Ohio
46	Clarence J. Brown	30	Head	Stationary Fireman	Michigan
47	Etta Brown	29	Wife	Registered Nurse	Indiana
48	Jerome W. Brown	7	Son	—	Ohio
49	Clarence J. Jr. Brown	5	Son	—	Ohio
50	Paul Maye	24	Head	Salesman	Ohio
51	Ruth Maye	21	Wife	Photo Sorter	Ohio
52	Bessie De Silver	69	Head	—	Ohio
53	Daniel Donovan	48	Head	Truck Driver	Ohio
54	Mabel Donovan	47	Wife	—	Ohio
55	William Donovan THIS PERSON	31	Son	Caddie	Ohio
56	Richard Donovan	23	Son	Truck Operator	Ohio
57	Lyda Connolly	60	Head	—	Ohio
58	Joseph P. Connolly	34	Son	Pressman	Ohio
59	Mildred M. Connolly	27	Daughter	Typist-Tel. Opr.	Ohio
60	Robert W. Connolly	25	Son	Warehouseman	Ohio
61	Charles L. Connolly	22	Son	Enrober	Ohio
62	Gerald P. Connolly	18	Son	0	Ohio
63	Melvin Jr. Griggs	36	Head	Printer Compositor	Indiana
64	Alice Griggs	35	Wife	—	Ohio
65	Melvin Jr. Griggs	12	Son	—	Ohio
66	Peter G. Stelzle	42	Head	Supervisor	Ohio
67	Florence M. Stelzle	42	Wife	—	Ohio
68	Wilma Huber	24	Head	Trimmer	Ohio
69	Donald Huber	6	Son	—	Ohio
70	Joan Huber	5	Daughter	—	Ohio
71	Mary Gordon	54	Head	0	Indiana
72	Agnes Ogden	26	Niece	Secretary	Colorado
73	Cecil Rouse	52	Head	Crane Digger	Kentucky
74	Flossy Rouse	46	Wife	—	Ohio
75	Robert Rouse	16	Son	—	Ohio
76	Lillian Rouse	14	Daughter	—	Ohio
77	Gladys Rouse	12	Daughter	—	Ohio
78	Alvin Rouse	10	Son	—	Ohio
79	Elmer Rouse	7	Son	—	Ohio
80	Nancy Rouse	3	Daughter	—	Ohio

Search for William Donovan

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Pedigree Summary

William + 1 sibling

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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