John Mcdonnell — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Alameda-County, California

Our Model Tree links this John Mcdonnell across the 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 4-person household.

Age 14 b. ~1926 Male Son Born: Virginia Single

1940 Census Record Details

Census Year	1940
Location	Alameda-County, California
Surname	McDonnell
Given Name	John
Relationship to Head	Son
Sex	M
Color / Race	White
Age	14
Marital Status	Single
Birthplace	Virginia
1935 Residence (City)	Oakland City
1935 Residence (County)	Oakland
Additional Details
Occupation	Delivery Boy
Industry	Newspaper
Class of Worker	PW
Hours Worked	12
Income (1939)	284
Highest Grade	Hs 1
1935 Residence	Same place
Birth State	Virginia
Birth Country	United States
Birthplace (normalized)	virginia
Occupation	Delivery Boy
Township / Ward	Oakland City
Est. Birth Year	~1926

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
Margaret Mcdonnell	Daughter	—	16	~1924
Annabella Mcdonnell	Head	—	45	~1895
John Mcdonnell	Son	—	14	~1926
George Mcdonnell	Son	—	13	~1927

Census Appearances

1930

Alameda, California

Son, age 4

Alameda, California · implied b. ~1926 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	McDonnell
Given Name	John
Relationship to Head	Son
Sex	M
Color / Race	White
Age	4
Marital Status	Single
Birthplace	Virginia
Father's Birthplace	New York
Mother's Birthplace	Washington
Occupation	none
Birth State	Virginia
Birth Country	United States
Birthplace (normalized)	virginia

1940

Alameda-County, California

Son, age 14

Alameda-County, California · implied b. ~1926 — 4 household members

Surname	McDonnell
Given Name	John
Relationship to Head	Son
Sex	M
Color / Race	White
Age	14
Marital Status	Single
Birthplace	Virginia
1935 Residence (City)	Oakland City
1935 Residence (County)	Oakland
Occupation	Delivery Boy
Industry	Newspaper
Class of Worker	PW
Hours Worked	12
Income (1939)	284
Highest Grade	Hs 1
1935 Residence	Same place
Birth State	Virginia
Birth Country	United States
Birthplace (normalized)	virginia

Model Tree

Linked across censuses

Our Model Tree links John Mcdonnell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

John Mcdonnell

Son · 1940 · age 14 · b. ~1926 · California

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Sibling

George Mcdonnell

Sibling · 1940 · age 13

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Margaret Mcdonnell

Sibling · 1940 · age 16

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 — Alameda-County, California Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00434-00298)

Line	Name	Age	Relation	Occupation	Birthplace
1	Hatsumi Kawano	51	Head	Masseuse	Japan
2	Chiyoko Kawano	18	Daughter	—	Calif
3	Shizue Kawano	19	Daughter	—	Calif
4	Sachiko Kawano	15	Daughter	—	Calif
5	Henry W Bangle	58	Head	Janitor	Calif
6	Eva A Bangle	68	Sister	—	Nevada
7	Mary E Hodge	65	Head	—	Oregon
8	Harriet F Elliott	52	Brother	Mechanic	Calif
9	Annabella Mcdonnell	45	Head	Manager	D.C.
10	Margaret Mcdonnell	16	Daughter	Waitress	Virginia
11	John Mcdonnell THIS PERSON	14	Son	Delivery Boy	Virginia
12	George Mcdonnell	13	Son	Delivery Boy	Virginia
13	Charles Rowley	31	Head	Watchmaker	England
14	Agnes Rowley	22	Wife	—	N. Dakota
15	Paul Tuomi	51	Head	Toolmaker	Finland
16	Helen L Jewell	68	Head	—	New York
17	Mary C Jewell	65	Sister	—	New York
18	George E Cole	39	Head	Carpenter	Canada-Eng
19	Irma E Cole	35	Wife	Office Clerk	Calif
20	Jos. S Keister	76	Head	—	Georgia
21	Nora Keister	60	Wife	Seamstress	Georgia
22	Lias Nelson	54	Head	—	Estonia
23	Cora A Brearty	53	Head	—	Hawaii
24	Lawrence S Brearty	24	Son	Steamfitter	Hawaii
25	Henry J Payson	56	Head	Painter	England
26	Elizabeth J Payson	50	Wife	—	England
27	Henry J Jr Payson	22	Son	Painter	England
28	William G Payson	21	Son	Bookkeeper	England
29	Wesley J Coffey	50	Head	Order Clerk	Washington
30	Margaret Coffey	45	Wife	—	Calif
31	M. Floyd Sturgeon	48	Head	Clerk-Office	Indiana
32	Jessie G Sturgeon	50	Wife	—	Calif
33	Alva Newman	77	Mother in law	—	New York
34	—	None	—	—	—
35	Bert G Mosley	65	Head	—	Missouri
36	Mary R Cosgrove	44	Sister	Saleswoman	Missouri
37	Charlotte Hilbourn	70	Head	—	Illinois
38	Theodore O Hilbourn	37	Son	Salesman	Calif
39	Elsie B Hilbourn	34	Daughter in law	Clerk	Penna
40	Theodore O Jr Hilbourn	13	Grandson	—	Calif

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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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