JC
John Cunningham — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Cunningham across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Patrick & Cora — first a head (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Cunningham |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Swissvale Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Coal Miner |
| Industry | Dom. S. Mill |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1700 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Coal Miner |
| Township / Ward | Swissvale Borough |
| Est. Birth Year | ~1907 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Cunningham | Head | — | 33 | ~1907 |
| Patrick Cunningham | Son | — | 4 | ~1936 |
| Margt Cunningham | Spouse | — | 29 | ~1911 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 13
Allegheny, Pennsylvania · implied b. ~1907 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cunningham |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Allegheny, Pennsylvania
Son, age 21
Allegheny, Pennsylvania · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cunningham |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Electric Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Allegheny-County, Pennsylvania
Head, age 33
Allegheny-County, Pennsylvania · implied b. ~1907 — 3 household members
| Surname | Cunningham |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Swissvale Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | Coal Miner |
| Industry | Dom. S. Mill |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1700 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 John Cunningham across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Patrick Cunningham (~0.92 confidence) and mother Cora Cunningham (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Cunningham
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Cora Cunningham
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Cunningham
Head · 1940 · age 33 · b. ~1907 · Pennsylvania
★ 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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03418-00639)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David Burns | 31 | Head | Produce Clerk | Pennsylvania |
| 2 | Bessie Burns | 37 | Wife | — | Missouri |
| 3 | Edith Jean Burns | 11 | Daughter | — | Pennsylvania |
| 4 | Wesley Burns | 11 | Son | — | Pennsylvania |
| 5 | Neal Burns | 8 | Son | — | Pennsylvania |
| 6 | Harry Mcgunn | 41 | Head | Policeman | Penna |
| 7 | Agnes Mcgunn | 38 | Wife | — | Penna |
| 8 | Jack R. Mcgunn | 19 | Son | Helper | Penna |
| 9 | Freddy Mcgunn | 8 | Son | — | Penna |
| 10 | Anna Smith | 77 | Head | — | England |
| 11 | William Greer | 37 | Son | Office Worker | Penna |
| 12 | Nellie Greer | 36 | Daughter | — | Penna |
| 13 | Robert Greer | 5 | Son | — | Penna |
| 14 | Theodore Mckinney | 44 | Head | Merchandise Emp. | Ohio |
| 15 | Margt Mckinney | 41 | Wife | — | Penna |
| 16 | Parker Mckinney | 19 | Son | — | Ohio |
| 17 | Mary Roberts | 64 | Head | — | England |
| 18 | Mary Agnes Roberts | 24 | Daughter | Time Clerk | Penna |
| 19 | Fred Roberts | 26 | Son | Garage Mechanic | Penna |
| 20 | William Johnston | 43 | Head | — | Pennsylvania |
| 21 | Violet Johnston | 37 | Wife | Stenographer | Pennsylvania |
| 22 | George Young | 42 | Head | Clerk | Pennsylvania |
| 23 | Maybelle Young | 41 | Wife | — | Pennsylvania |
| 24 | Harry Heard | 58 | Head | Teacher | Pennsylvania |
| 25 | Martha Heard | 53 | Wife | — | Pennsylvania |
| 26 | Kenneth Heard | 23 | Son | Teacher | Pennsylvania |
| 27 | Elmer Fleck | 31 | Head | Waiter | Pennsylvania |
| 28 | Ruth Fleck | 28 | Wife | Stenographer | Pennsylvania |
| 29 | John Cunningham THIS PERSON | 33 | Head | Coal Miner | Maryland |
| 30 | Margt Cunningham | 29 | Wife | — | Pennsylvania |
| 31 | Patrick Cunningham | 4 | Son | — | Pennsylvania |
| 32 | Sam Mazzarello | 42 | Head | Skilled Laborer | Italy |
| 33 | Anna Mazzarello | 38 | Wife | — | Italy |
| 34 | Charles Ciriello | 28 | Head | Barber | Pennsylvania |
| 35 | Louise Ciriello | 23 | Wife | Dressmaker | Pennsylvania |
| 36 | Salvador Simone | 39 | Head | Bartender | Italy |
| 37 | Faustine Simone | 35 | Wife | — | Pennsylvania |
| 38 | Maria Simone | 14 | Daughter | — | Pennsylvania |
| 39 | Leo Sypank | 61 | Head | Foreman | Pennsylvania |
Pedigree Summary
John
Gen 1 · 2 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)