JC
Joseph Cunningham — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lehigh-County, Pennsylvania
Our Model Tree links this Joseph Cunningham across the 1920, 1930 and 1940 US Censuses in Lehigh-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents James & Patrick — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lehigh-County, Pennsylvania |
| Surname | Cunningham |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Allentown |
| 1935 Residence (County) | Lehigh |
| Additional Details | |
| Occupation | Clerk |
| Industry | Gas and Light Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| Township / Ward | Allentown |
| Est. Birth Year | ~1917 |
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 Joseph | Age | Birth yr |
|---|---|---|---|---|
| Mary Cunningham | Daughter | — | 19 | ~1921 |
| Joseph Cunningham | Son | — | 23 | ~1917 |
| James Cunningham | Head | — | 57 | ~1883 |
| James Cunningham | Son | — | 25 | ~1915 |
| Katherine Cunningham | Daughter | — | 21 | ~1919 |
| John Cunningham | Son | — | 17 | ~1923 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 3
Allegheny, Pennsylvania · implied b. ~1917 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cunningham |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Ireland |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 14
Allegheny, Pennsylvania · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cunningham |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lehigh-County, Pennsylvania
Son, age 23
Lehigh-County, Pennsylvania · implied b. ~1917 — 6 household members
| Surname | Cunningham |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Allentown |
| 1935 Residence (County) | Lehigh |
| Occupation | Clerk |
| Industry | Gas and Light Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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.
Our Model Tree links Joseph Cunningham across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Cunningham (~0.92 confidence) and father Patrick Cunningham (~0.92 confidence) and mother Mary Cunningham (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Cunningham
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Patrick Cunningham
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Mary Cunningham
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Cunningham
Son · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Mary Cunningham
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Cunningham
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Cunningham
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Cunningham
Sibling · 1940 · age 25
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 — Lehigh-County, Pennsylvania
Open full size
1940 US Federal Census — Lehigh-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03542-00667)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Newhardt | 49 | Head | — | Pennsylvania |
| 2 | Joseph Newhardt | 28 | Son | Machine Operator | Pennsylvania |
| 3 | Irvin Newhardt | 14 | Son | — | Pennsylvania |
| 4 | Joseph Kudla | 53 | Head | Weaver | Austria |
| 5 | Teresa Kudla | 52 | Wife | — | Austria |
| 6 | Rose Mary Kudla | 24 | Daughter | Machine Operator | Pennsylvania |
| 7 | Joseph G. Breyer | 52 | Head | Painter | Pennsylvania |
| 8 | Anna Breyer | 21 | Daughter | Machine Operator | Pennsylvania |
| 9 | Mary Breyer | 19 | Daughter | Machine Operator | Pennsylvania |
| 10 | Vincent Mcguire | 28 | Nephew | Weaver | Pennsylvania |
| 11 | Walter Bower | 29 | Lodger | Weaver | Pennsylvania |
| 12 | Christine Bower | 30 | Lodger | — | Pennsylvania |
| 13 | Rayne Bower | 1 | Lodger | — | Pennsylvania |
| 14 | Joseph Plessl | 51 | Head | Laborer | Austria |
| 15 | Rose Plessl | 48 | Wife | — | Austria |
| 16 | Rose Plessl | 25 | Daughter | Hair Dresser | Pennsylvania |
| 17 | Joseph Plessl | 22 | Son | New Worker | Pennsylvania |
| 18 | Margaret Plessl | 14 | Daughter | — | Pennsylvania |
| 19 | Joseph Huber | 31 | Son-in-law | Operator | Pennsylvania |
| 20 | Emma Huber | 27 | Daughter | Hair Dresser | Pennsylvania |
| 21 | Patrick J. Boyle | 67 | Head | — | Free State Ireland |
| 22 | Mary Boyle | 57 | Sister | Proprietor | Pennsylvania |
| 23 | Julia Boyle | 48 | Sister | — | Pennsylvania |
| 24 | Anna M. Burns | 64 | Sister | — | Free State Ireland |
| 25 | Clyde Harlow | 50 | Head | — | Pennsylvania |
| 26 | Francis Harlow | 21 | Son | Machine Operator | Pennsylvania |
| 27 | Loretta M. Harlow | 20 | Daughter | Stenographer | Pennsylvania |
| 28 | Sarah Harlow | 18 | Daughter | Cementer | Pennsylvania |
| 29 | Agnes M. Harlow | 15 | Daughter | — | Pennsylvania |
| 30 | James Cunningham | 57 | Head | Locomotive Engineer | Pennsylvania |
| 31 | James Jr. Cunningham | 25 | Son | Silk Weaver | Pennsylvania |
| 32 | Joseph Cunningham THIS PERSON | 23 | Son | Clerk | Pennsylvania |
| 33 | Katherine Cunningham | 21 | Daughter | Housekeeper | Pennsylvania |
| 34 | Mary A. Cunningham | 19 | Daughter | New Worker | Pennsylvania |
| 35 | John J. Cunningham | 17 | Son | — | Pennsylvania |
| 36 | Matthew Decker | 53 | Head | Steward | Austria |
| 37 | Elizabeth Decker | 51 | Wife | — | Austria |
| 38 | William Decker | 24 | Son | Salesman | Pennsylvania |
| 39 | Frank Decker | 22 | Son | Welder | Pennsylvania |
| 40 | Elaine Decker | 20 | Daughter | Pairer | Pennsylvania |
Related Census Records
Pedigree Summary
Joseph + 4 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)