John Mcdonnell — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Essex-County, New Jersey

Our Model Tree links this John Mcdonnell across the 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 4-person household.

Age 21 b. ~1919 Male Son Born: New Jersey Single

1940 Census Record Details

Census Year	1940
Location	Essex-County, New Jersey
Surname	McDonnell
Given Name	John
Relationship to Head	Son
Sex	M
Color / Race	White
Age	21
Marital Status	Single
Birthplace	New Jersey
1935 Residence (City)	Newark city
1935 Residence (County)	Essex
Additional Details
Occupation	Usher
Industry	Movie Theater
Class of Worker	PW
Hours Worked	40
Income (1939)	600
Highest Grade	H 4
1935 Residence	Same House
Birth State	New Jersey
Birth Country	United States
Birthplace (normalized)	new jersey
Occupation	Usher
Township / Ward	Newark City
Est. Birth Year	~1919

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
Ed Mcdonnell	Head	—	63	~1877
Florence Mcdonnell	Spouse	—	53	~1887
James Mcdonnell	Son	—	16	~1924
John Mcdonnell	Son	—	21	~1919

Census Appearances

1930

Essex, New …

Son, age 10

Essex, New Jersey · implied b. ~1920 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	McDonald
Given Name	John
Relationship to Head	Son
Sex	M
Color / Race	White
Age	10
Marital Status	Single
Birthplace	New Jersey
Father's Birthplace	New Jersey
Mother's Birthplace	Scotland
Occupation	none
Can Read/Write	Yes
Birth State	New Jersey
Birth Country	United States
Birthplace (normalized)	new jersey

1940

Essex-County, New …

Son, age 21

Essex-County, New Jersey · implied b. ~1919 — 4 household members

Surname	McDonnell
Given Name	John
Relationship to Head	Son
Sex	M
Color / Race	White
Age	21
Marital Status	Single
Birthplace	New Jersey
1935 Residence (City)	Newark city
1935 Residence (County)	Essex
Occupation	Usher
Industry	Movie Theater
Class of Worker	PW
Hours Worked	40
Income (1939)	600
Highest Grade	H 4
1935 Residence	Same House
Birth State	New Jersey
Birth Country	United States
Birthplace (normalized)	new jersey

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 21 · b. ~1919 · New Jersey

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Sibling

James 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 — Essex-County, New Jersey Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02416-00573)

Line	Name	Age	Relation	Occupation	Birthplace
1	Emma Grace Berry	32	Daughter	Teacher	New Jersey
2	Verna Reed	70	Lodger	—	New Jersey
3	John R. Conroy	46	Head	Maintenance	Virginia
4	Frances Conroy	44	Wife	Maintenance	New Jersey
5	Virginia Conroy	15	Daughter	—	New Jersey
6	Fannie Mccormack	78	Mother-in-law	—	New Jersey
7	Louis Rossi	49	Boarder	Research Field Wk	New Jersey
8	Henry J. Rossi	52	Boarder	Broker	New York
9	Louis Rossi	52	Head	Butcher	Italy
10	Johanna Rossi	47	Wife	—	New Jersey
11	Raymond Rossi	11	Son	—	New Jersey
12	Benedetto Rotteri	78	Head	—	Italy
13	Carolina Rotteri	70	Wife	—	Italy
14	Victor Rotteri	35	Son	Foreman	New Jersey
15	Attilio Rotteri	31	Son	Salesman	New Jersey
16	Felicita Rotteri	43	Dau	Inspector	New Jersey
17	Delinda Rotteri	40	Dau	Bookkeeper	New Jersey
18	Ed Mcdonnell	63	Head	Painter	New York
19	Florence Mcdonnell	53	Wife	—	New York
20	John Mcdonnell THIS PERSON	21	Son	Usher	New Jersey
21	James Mcdonnell	16	Son	—	New Jersey
22	Margaret Hancock	58	Head	—	New Jersey
23	Robert Hancock	38	Son	Radio Repr	New Jersey
24	Donald Robinson	41	Head	Pur. Agt	New Jersey
25	Florence Robinson	34	Wife	—	New Jersey
26	Jean Paul Robinson	11	Son	—	New Jersey
27	Richard Robinson	2	Son	—	New Jersey
28	James Robinson	25	Head	Enameler	Scotland
29	Robert Williams	26	Head	Collector	New Jersey
30	Marjorie Williams	24	Wife	Tel. Oper. & Recpt.	New Jersey
31	Dan Brooklin	53	Head	Plummer	New Jersey
32	Alice Cain	30	Head	Asbestos Worker	New Jersey
33	Eleanor Cain	28	Wife	Typist	New Jersey
34	Winnie Cain	58	Mother	—	New Jersey
35	Louis Rasmussen	60	Head	—	Denmark
36	Inger Rasmussen	57	Wife	—	Denmark
37	Andrew Hall	73	Head	Manager	New Jersey
38	Mary Hall	71	Wife	—	New Jersey
39	Cora Shawger	60	Lodger	—	New Jersey
40	Margaret Preston	78	Head	—	Ireland

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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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