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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.~1925), then head of a 6-person household.

Age 15 b. ~1925 Male Son Born: New Jersey Single

1940 Census Record Details

Census Year1940
LocationEssex-County, New Jersey
SurnameMcDonnell
Given NameJohn
Relationship to HeadSon
SexM
Color / RaceWhite
Age15
Marital StatusSingle
BirthplaceNew Jersey
1935 Residence (City)Bloomfield
1935 Residence (County)Essex
Additional Details
Income (1939)0
Highest GradeHs 2
1935 ResidenceSame place
Birth StateNew Jersey
Birth CountryUnited States
Birthplace (normalized)new jersey
Township / WardBloomfield
Est. Birth Year~1925

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.

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

Name Relation to head Relative to John Age Birth yr
Patricia Mcdonnell Daughter — 11 ~1929
Charles Mcdonnell Son — 13 ~1927
Joseph Mcdonnell Son — 1 ~1939
John Mcdonnell Son — 15 ~1925
Patrick Mcdonnell Head — 40 ~1900
Loretta Mcdonnell Spouse — 40 ~1900

Census Appearances

1930
Essex, New …
Son, age 4
Essex, New Jersey · implied b. ~1926 — 6 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname McDonald
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 4
Marital Status Single
Birthplace New Jersey
Father's Birthplace New Jersey
Mother's Birthplace North Carolina
Can Read/Write Yes
Birth State New Jersey
Birth Country United States
Birthplace (normalized) new jersey
1940
Essex-County, New …
Son, age 15
Essex-County, New Jersey · implied b. ~1925 — 6 household members
Surname McDonnell
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 15
Marital Status Single
Birthplace New Jersey
1935 Residence (City) Bloomfield
1935 Residence (County) Essex
Income (1939) 0
Highest Grade Hs 2
1935 Residence Same place
Birth State New Jersey
Birth Country United States
Birthplace (normalized) new jersey

Model Tree

An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Linked across censuses
Our Model Tree links John Mcdonnell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcdonnell
Son · 1940 · age 15 · b. ~1925 · New Jersey
★ You are viewing this record
Sibling
Patricia Mcdonnell
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcdonnell
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mcdonnell
Sibling · 1940 · age 13
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-t0627-02330-00193)

Line Name Age Relation Occupation Birthplace
1 William Thompson 49 Head Owner + Prop New Jersey
2 Emma Thompson 51 Wife — New Jersey
3 Frank Thompson 39 Brother — England
4 Alice Thompson 32 Sister — England
5 Alfonso Baobante 23 Head Capper Italy
6 Mary Baobante 21 Wife — Italy
7 Peter Baobante 43 Son Bartender New York
8 Joseph (X) Baobante 33 Son Janitor New York
9 August E. Ericson 68 Head Cola Mixer Sweden
10 Anna E. Ericson 66 Wife — Sweden
11 Ebba Ericson 39 Daughter — New York
12 Fred Carder 51 Head Tool Maker New Jersey
13 Lillian Carder 49 Wife — New Jersey
14 Frederick Stoll 79 Stepfather — Germany
15 Ray Hofelich 31 Head Accountant Ohio
16 Eunice Hofelich 32 Wife — New York
17 Hilda Hofelich 33 Lodger Accountant Pennsylvania
18 Joseph P. Lowery 32 Head Electrician Pennsylvania
19 Alice Lowery 28 Wife — Scotland
20 Gustave Hohfeldt 56 Head Machinist Germany
21 Elizabeth Hohfeldt 59 Wife — Germany
22 Iver H. Lundgren 27 Head Clerk Stocking New Jersey
23 Lillian Lundgren 26 Wife — New Jersey
24 Milton Rozelle 41 Head Trainman Pennsylvania
25 Ellen Rozelle 37 Wife — England
26 Marion Rozelle 16 Daughter — Pennsylvania
27 Shirley Rozelle 14 Daughter — Pennsylvania
28 John Johnson 45 Head Electrician New Jersey
29 Emma Johnson 44 Wife — Delaware
30 Kenneth Johnson 19 Son — New Jersey
31 Marion Johnson 17 Daughter Nurse Maid New Jersey
32 Elmer Johnson 6 Daughter — New Jersey
33 Fredk Bogart 70 Father in law Painter New Jersey
34 Millicent Johnson 69 Mother — New Jersey
35 Patrick Mcdonnell 40 Head Shipping Clerk Ireland
36 Loretta Mcdonnell 40 Wife — New Jersey
37 John Mcdonnell THIS PERSON 15 Son — New Jersey
38 Charles Mcdonnell 13 Son — New Jersey
39 Patricia Mcdonnell 11 Daughter — New Jersey
40 Joseph Mcdonnell 1 Son — New Jersey

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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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