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William Callahan — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Montgomery-County, Pennsylvania

Our Model Tree links this William Callahan across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 4-person household.

Age 63 b. ~1877 Male Head Born: Delaware Married

1940 Census Record Details

Census Year1940
LocationMontgomery-County, Pennsylvania
SurnameCallahan
Given NameWilliam
Relationship to HeadHead
SexM
Color / RaceBlack
Age63
Marital StatusMarried
BirthplaceDelaware
1935 Residence (City)R
1935 Residence (County)Montgomery
Additional Details
OccupationLaborer
IndustryRoad repair project
Class of WorkerGW
Hours Worked23
Income (1939)520
Highest GradeNo 3
1935 ResidencePenna.
Birth StateDelaware
Birth CountryUnited States
Birthplace (normalized)delaware
OccupationLaborer
Township / WardNorristown
Est. Birth Year~1877

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 William Age Birth yr
William Callahan Head — 63 ~1877
James Callahan Son — 15 ~1925
Ruth Callahan Daughter — 18 ~1922
Cathy Callahan Spouse — 62 ~1878

Census Appearances

1920
Delaware, Pennsylvania
Head, age 46
Delaware, Pennsylvania · implied b. ~1874 — 9 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Callahan
Given Name William
Relationship to Head Head
Sex M
Color / Race White
Age 46
Marital Status Married
Birthplace Delaware
Father's Birthplace Delaware
Mother's Birthplace Delaware
Occupation Labor
Industry Farm
Class of Worker W
Can Read Yes
Can Write Yes
Speaks English Yes
Home Owned/Rented R
Birth State Delaware
Birth Country United States
Birthplace (normalized) delaware
1930
Montgomery, Pennsylvania
Head, age 56
Montgomery, Pennsylvania · implied b. ~1874 — 7 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Callahan
Given Name William H.
Relationship to Head Head
Sex M
Color / Race White
Age 56
Marital Status Married
Birthplace Delaware
Age at First Marriage 27
Father's Birthplace Delaware
Mother's Birthplace Delaware
Occupation Laborer
Industry Farm
Class of Worker W
Can Read/Write Yes
Home Owned/Rented R
Home Value / Rent 12
Radio Set R
Veteran No
Birth State Delaware
Birth Country United States
Birthplace (normalized) delaware
1940
Montgomery-County, Pennsylvania
Head, age 63
Montgomery-County, Pennsylvania · implied b. ~1877 — 4 household members
Surname Callahan
Given Name William
Relationship to Head Head
Sex M
Color / Race Black
Age 63
Marital Status Married
Birthplace Delaware
1935 Residence (City) R
1935 Residence (County) Montgomery
Occupation Laborer
Industry Road repair project
Class of Worker GW
Hours Worked 23
Income (1939) 520
Highest Grade No 3
1935 Residence Penna.
Birth State Delaware
Birth Country United States
Birthplace (normalized) delaware

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 William Callahan across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
William Callahan
Head · 1940 · age 63 · b. ~1877 · Pennsylvania
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Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — Montgomery-County, Pennsylvania Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03582-00504)

Line Name Age Relation Occupation Birthplace
1 Irene Sharkey 61 Lodger — Penna.
2 Henrietta Johnson 20 Head — South Carolina
3 William Johnson 6 Son — Penna.
4 Mary Johnson 4 Daughter — Penna.
5 Julia James 27 Sister — South Carolina
6 Christine James 10 Niece — Penna.
7 Irene Ryman 67 Head — Penna.
8 Augustus Lee 55 Head — South Carolina
9 Prince Hill 47 Lodger Laborer Alabama
10 Sally Hill 49 Lodger's Wife Air Compressor Operator Georgia
11 Prince Jr. Hill 14 Lodger's Son — Penna.
12 Albert Brown 25 Head — South Carolina
13 Lunn Brown 22 Wife Janitor Florida
14 Alberta Brown 5 Daughter — Penna.
15 Ernest Brown 3 Son — Penna.
16 Rosa Brown 2 Son — Penna.
17 Albert Jr. Brown 1 Son — Penna.
18 Elizabeth Blackwell 31 Head — Penna.
19 Steward De Seidel 58 Son-in-law Cook Penna.
20 Mary B. De Seidel 40 Daughter — Penna.
21 Gladys May De Seidel 15 Grand-daughter — Penna.
22 William Callahan THIS PERSON 63 Head Laborer Delaware
23 Cathy Callahan 62 Wife — Virginia
24 Ruth Callahan 18 Daughter Rug Maker Penna.
25 James Callahan 15 Son — Penna.
26 Walter De Walt 52 Head Laborer Penna.
27 Robert De Walt 23 Son Laborer Penna.
28 Herbert Raindrop 37 Lodger Laborer South Carolina
29 Mamie Raindrop 37 Lodger's Wife Janitress North Carolina
30 Paul Jones 32 Lodger Laborer Penna.
31 George Bryant 60 Head Laborer North Carolina
32 Roberta Bryant 48 Wife — Georgia
33 Frank Clarke 42 Head Laborer Penna.
34 Grace Clarke 37 Wife — Penna.
35 Albert Hanley 35 Lodger Laborer Mississippi
36 Mary Hanley 21 Lodger's Wife Housekeeper Mississippi
37 A. Regina Fox 69 Head — Penna.
38 Elizabeth R. Fox 28 Daughter Stenographer Penna.
39 Bessie Felton 49 Head Bookkeeper Penna.
40 Charles R. Felton 76 Father Gardener New Jersey

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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