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John Mcconnell — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Erie-County, New York

Our Model Tree links this John Mcconnell across the 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 9-person household.

Age 13 b. ~1927 Male Son Born: New York Single

1940 Census Record Details

Census Year1940
LocationErie-County, New York
SurnameMcConnell
Given NameJohn
Relationship to HeadSon
SexM
Color / RaceWhite
Age13
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)Buffalo city
1935 Residence (County)Erie
Additional Details
Highest GradeNo 6
1935 ResidenceSame place
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardBuffalo City
Est. Birth Year~1927

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.

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

Name Relation to head Relative to John Age Birth yr
Charles Mcconnell Son — 20 ~1920
Magdalena Mcconnell Spouse — 45 ~1895
Jean Gertz Daughter — 4 ~1936
James Mcconnell Son — 16 ~1924
Mary Mcconnell Daughter — 18 ~1922
William Mcconnell Son — 23 ~1917
Adeline Gertz Daughter — 26 ~1914
William Mcconnell Head — 57 ~1883
John Mcconnell Son — 13 ~1927

Census Appearances

1930
Erie, New …
Son, age 3
Erie, New York · implied b. ~1927 — 5 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname McConnell
Given Name John A.
Relationship to Head Son
Sex M
Color / Race White
Age 3
Marital Status Single
Birthplace New York
Father's Birthplace Michigan
Mother's Birthplace New York
Can Read/Write No
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Erie-County, New …
Son, age 13
Erie-County, New York · implied b. ~1927 — 9 household members
Surname McConnell
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 13
Marital Status Single
Birthplace New York
1935 Residence (City) Buffalo city
1935 Residence (County) Erie
Highest Grade No 6
1935 Residence Same place
Birth State New York
Birth Country United States
Birthplace (normalized) new york

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 Mcconnell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcconnell
Son · 1940 · age 13 · b. ~1927 · New York
★ You are viewing this record
Sibling
James Mcconnell
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcconnell
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Gertz
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mcconnell
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Adeline Gertz
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mcconnell
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 — Erie-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02827-00238)

Line Name Age Relation Occupation Birthplace
41 William Lefczyk 53 Head Cleaner Austria
42 Mary Lefczyk 33 Wife Cleaner Pennsylvania
43 Anne Lefczyk 18 Daughter — New York
44 William Lefczyk 17 Son — New York
45 Mary Lefczyk 15 Daughter — New York
46 Helen Lefczyk 14 Daughter — New York
47 Demetrio Terrazzano 49 Lodger Laborer Austria
48 William Mcconnell 57 Head Switchman Pennsylvania
49 Magdalena Mcconnell 45 Wife — New York
50 William Mcconnell 23 Son Switchman New York
51 Charles Mcconnell 20 Son — New York
52 Mary Mcconnell 18 Daughter Nurse New York
53 James Mcconnell 16 Son — New York
54 John Mcconnell THIS PERSON 13 Son — New York
55 Adeline Gertz 26 Daughter — New York
56 Jean Gertz 4 Daughter — New York
57 Frances Bauer 40 Head — New York
58 Norman Bauer 24 Brother Mechanic New York
59 Alfred Bauer 34 Head Prop. New York
60 Jennie Bauer 35 Wife — New York
61 Joseph Janick 47 Head Laborer New York
62 Mary Janick 47 Wife Cleaning Woman New York
63 Harry Janick 24 Son — New York
64 Chester Janick 22 Son Laborer New York
65 Bernice Janick 17 Daughter Kitchen New York
66 Eleanor Janick 16 Daughter — New York
67 Alice Janick 14 Daughter — New York
68 Joseph Janick 11 Son — New York
69 Robert Janick 9 Son — New York
70 Theresa Janick 6 Daughter — New York
71 Gerald Janick 3 Son — New York
72 Carl Hansen 76 Head — New York
73 Marie Hansen 40 Daughter — New York
74 Ada Hansen 38 Daughter Stenog. New York
75 Adolph Schiff 56 Head Butcher New York
76 Charlotte Schiff 56 Wife — New York
77 William Schiff 27 Son Watchman New York
78 Charlotte Schiff 22 Daughter — New York
79 Ruth Schiff 19 Daughter — New York
80 Cornelia Schiff 20 Daughter — New York

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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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