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John Cahill — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this John Cahill across the 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 8-person household.

Age 55 b. ~1885 Male Head Born: Irish Free State Married

1940 Census Record Details

Census Year1940
LocationNew-York-County, New York
SurnameCahill
Given NameJohn F.
Relationship to HeadHead
SexM
Color / RaceWhite
Age55
Marital StatusMarried
BirthplaceIrish Free State
1935 Residence (City)N.Y. City
Naturalization StatusNaturalized
Additional Details
OccupationClerk
IndustryPost Office
Class of WorkerGW
Hours Worked40
Income (1939)2300
Highest GradeNo 8
1935 ResidenceSame place
Birthplace (normalized)irish free state
OccupationClerk
Township / WardNy City
Est. Birth Year~1885

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.

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

Name Relation to head Relative to John Age Birth yr
Theresa Cahill Daughter — 14 ~1926
Mary Cahill Spouse — 48 ~1892
Irene Cahill Daughter — 19 ~1921
Margaret Cahill Daughter — 25 ~1915
Patrick Cahill Son — 24 ~1916
John Cahill Son — 22 ~1918
Frances Cahill Daughter — 17 ~1923
John Cahill Head — 55 ~1885

Census Appearances

1930
New York, …
Head, age 45
New York, New York · implied b. ~1885 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Cahill
Given Name John
Relationship to Head Head
Sex M
Color / Race White
Age 45
Marital Status Married
Birthplace Irish Free State
Year of Immigration 1900
Age at First Marriage 27
Father's Birthplace Irish Free State
Mother's Birthplace Irish Free State
Occupation P.O. Clerk
Industry N.Y. P.O.
Class of Worker W
Can Read/Write Yes
Mother Tongue Irish
Home Owned/Rented R
Home Value / Rent 39
Radio Set R
Birthplace (normalized) irish free state
1940
New-York-County, New …
Head, age 55
New-York-County, New York · implied b. ~1885 — 8 household members
Surname Cahill
Given Name John F.
Relationship to Head Head
Sex M
Color / Race White
Age 55
Marital Status Married
Birthplace Irish Free State
1935 Residence (City) N.Y. City
Naturalization Status Naturalized
Occupation Clerk
Industry Post Office
Class of Worker GW
Hours Worked 40
Income (1939) 2300
Highest Grade No 8
1935 Residence Same place
Birthplace (normalized) irish free state

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 Cahill across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Cahill
Head · 1940 · age 55 · b. ~1885 · New York
★ You are viewing this record
Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — New-York-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02645-00062)

Line Name Age Relation Occupation Birthplace
1 Ada Ciotti 29 Daughter Stenographer N.Y.
2 Zabal Fidel 38 Head Counter-Man Spain
3 Nuria Fidel 35 Wife — Spain
4 Hubert J. Stockel 41 Head Laborer N.Y.
5 May Masterson 49 Boarder Dress Maker N.Y.
6 Josephine Castronovo 42 Head Brancher Italy
7 Frances Castronovo 18 Daughter Brancher Italy
8 Elizabeth Taber 45 Head Editing N.Y.
9 Grace Sloan 55 Head Clerk N.Y.
10 Louis Puentes 38 Head Waiter Spain
11 Consuelo Puentes 29 Wife Singer Spain
12 Salvatore Imperato 40 Head Owner N.Y.
13 Rose Imperato 32 Wife — N.Y.
14 Ralph Imperato 8 Son — N.Y.
15 Joseph Imperato 3 Son — N.Y.
16 Alexander Diamond 36 Head Chauffeur N.Y.
17 Lillian Diamond 35 Wife — N.Y.
18 Bernard Diamond 10 Son — N.Y.
19 Gerald Diamond 4 Son — N.Y.
20 Harris Podolsky 72 Father-in-law — Russia
21 Bessie Podolsky 62 Mother-in-law — Russia
22 Pauline Podolsky 38 Sister-in-law Clerk N.Y.
23 Max Wolhandler 55 Head News Dealer Russia
24 Blanche Wolhandler 49 Wife — Poland
25 Malvina Wolhandler 25 Daughter Bookkeeper N.Y.
26 Ethel Wolhandler 22 Daughter Bookkeeper N.Y.
27 Joseph Wolhandler 20 Son — N.Y.
28 Shirley Wolhandler 16 Daughter — N.Y.
29 John F. Cahill THIS PERSON 55 Head Clerk Irish Free State
30 Mary Cahill 48 Wife — Irish Free State
31 Margaret Cahill 25 Daughter Clerk N.Y.
32 Patrick J. Cahill 24 Son Packer N.Y.
33 John Cahill 22 Son Clerk N.Y.
34 Irene Cahill 19 Daughter — N.Y.
35 Frances Cahill 17 Daughter — N.Y.
36 Theresa Cahill 14 Daughter — N.Y.
37 Bernard Altman 33 Head Labor Organizer N.Y.
38 Jay Altman 32 Brother Entertainer N.Y.
39 Ralph Altman 31 Brother Traffic Mgr. N.Y.
40 David Altman 24 Brother — N.Y.

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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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