JC
James Carr — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this James Carr across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Michael & Mary — first a son (b.~1908), then head of a 2-person household.
Age 32
b. ~1908
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Carr |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Machinist |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 326 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Machinist |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1908 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mary Carr | Head | — | 66 | ~1874 |
| James Carr | Son | — | 32 | ~1908 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 14
Allegheny, Pennsylvania · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 24
Allegheny, Pennsylvania · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Machinist |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 32
Allegheny-County, Pennsylvania · implied b. ~1908 — 2 household members
| Surname | Carr |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Machinist |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 326 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| 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 James Carr across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Michael Carr (~0.92 confidence) and mother Mary Carr (~0.92 confidence) and mother Mary Carr (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Carr
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Mary Carr
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Mary Carr
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Carr
Son · 1940 · age 32 · b. ~1908 · 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
40 people indexed on this census page (nara:1940:m-t0627-03652-00093)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ethel Cohen | 26 | Daughter | — | Pennsylvania |
| 42 | Eileen Cohen | 6 | Granddaughter | — | Pennsylvania |
| 43 | Peter Collura | 35 | Head | Huckster | Pennsylvania |
| 44 | Lena Collura | 31 | Wife | — | Pennsylvania |
| 45 | Rose Marie Collura | 14 | Daughter | — | Pennsylvania |
| 46 | Vivian Collura | 12 | Daughter | — | Pennsylvania |
| 47 | Richard Collura | 10 | Son | — | Pennsylvania |
| 48 | Nuncio Martino | 69 | Head | Master Bricklayer | Italy |
| 49 | Felippa Martino | 63 | Wife | — | Italy |
| 50 | Nuncio Martino | 11 | Grandson | — | Ohio |
| 51 | Rose Noonan | 62 | Head | — | Pennsylvania |
| 52 | Eva Noonan | 53 | Sister | Sales Lady | Pennsylvania |
| 53 | Karoline Slezak | 50 | Head | — | Poland |
| 54 | Woycheck Slezak | 23 | Daughter | — | Pennsylvania |
| 55 | Peter Slezak | 27 | Son in law | Baker | Pennsylvania |
| 56 | Janet Slezak | 4 | Granddaughter | — | Pennsylvania |
| 57 | Bridget Maloney | 71 | Lodger | — | Pennsylvania |
| 58 | Andrew Slezak | 27 | Head | Baker | Pennsylvania |
| 59 | Stephanie Slezak | 26 | Wife | — | Pennsylvania |
| 60 | Caroline Slezak | 4 | Daughter | — | Pennsylvania |
| 61 | Mary Carr | 66 | Head | — | Pennsylvania |
| 62 | James Carr THIS PERSON | 32 | Son | Machinist | Pennsylvania |
| 63 | Lizzie Wise | 58 | Head | — | Lithuania |
| 64 | Charles Wise | 32 | Son | Inside Salesman | Pennsylvania |
| 65 | Matthew Wise | 28 | Son | Bookkeeping | Pennsylvania |
| 66 | Louis Wise | 25 | Son | Office Clerk | Pennsylvania |
| 67 | Paul Caruso | 52 | Head | Laborer | Italy |
| 68 | Janet Caruso | 43 | Wife | — | Italy |
| 69 | Joseph Caruso | 24 | Son | Handyman | Pennsylvania |
| 70 | Lena Caruso | 17 | Daughter | — | Pennsylvania |
| 71 | Madeline Caruso | 15 | Daughter | — | Pennsylvania |
| 72 | Ennies Caruso | 13 | Son | — | Pennsylvania |
| 73 | Carmeline Caruso | 8 | Daughter | — | Pennsylvania |
| 74 | Ben Ornato | 38 | Head | Brakeman | New York |
| 75 | Anna Ornato | 34 | Wife | — | Pennsylvania |
| 76 | Betty Ann Ornato | 15 | Daughter | — | Pennsylvania |
| 77 | Ethel Ornato | 12 | Daughter | — | Pennsylvania |
| 78 | Ben Jr. Ornato | 10 | Son | — | Pennsylvania |
| 79 | Jean Ornato | 8 | Daughter | — | Pennsylvania |
| 80 | Leonard Ornato | 3 | Son | — | Pennsylvania |
Pedigree Summary
James
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)