JM
John Mcguire — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Mcguire across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Tony & John — 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 | Allegheny-County, Pennsylvania |
| Surname | McGuire |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Stacker |
| Industry | Box Company |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Stacker |
| Township / Ward | Pittsburgh City |
| 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 John | Age | Birth yr |
|---|---|---|---|---|
| Bernice Mcguire | Daughter | — | 15 | ~1925 |
| John Mcguire | Head | — | 57 | ~1883 |
| Bernard Mcguire | Son | — | 16 | ~1924 |
| John Mcguire | Son | — | 23 | ~1917 |
| Roy Mcguire | Son | — | 11 | ~1929 |
| Nellie Mcguire | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 1
Allegheny, Pennsylvania · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGuire |
| Given Name | John M |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Industry | at home |
| Can Read | No |
| Can Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 12
Allegheny, Pennsylvania · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGuire |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 23
Allegheny-County, Pennsylvania · implied b. ~1917 — 6 household members
| Surname | McGuire |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | Stacker |
| Industry | Box Company |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 400 |
| Highest Grade | Hs 4 |
| 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 John Mcguire across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Tony Mcguire (~0.92 confidence) and father John Mcguire (~0.92 confidence) and mother Nellie Mcguire (~0.92 confidence) and father Clair Mcguire (~0.92 confidence) and mother Louella Mcguire (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Tony Mcguire
b. ~1881
Source father
● Household
· direct · ~0.92
Father
John Mcguire
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Nellie Mcguire
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Clair Mcguire
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Louella Mcguire
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mcguire
Son · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Bernard Mcguire
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roy Mcguire
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Mcguire
Sibling · 1940 · age 15
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 — 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-t0627-03665-00061)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Tomuess | 19 | Son | Pattern Puncher | Pennsylvania |
| 2 | Anna Tomuess | 17 | daughter | — | Pennsylvania |
| 3 | Helen Tomuess | 15 | daughter | — | Pennsylvania |
| 4 | Sally Tomuess | 13 | daughter | — | Pennsylvania |
| 5 | John Mcguire | 57 | Head | Janitor | Pennsylvania |
| 6 | Nellie Mcguire | 50 | Wife | — | Pennsylvania |
| 7 | John Mcguire THIS PERSON | 23 | Son | Stacker | Pennsylvania |
| 8 | Bernard Mcguire | 16 | Son | — | Pennsylvania |
| 9 | Bernice Mcguire | 15 | daughter | — | Pennsylvania |
| 10 | Roy Mcguire | 11 | Son | — | Pennsylvania |
| 11 | Fred Barley | 70 | Head | Watchman | Pennsylvania |
| 12 | Martha Barley | 60 | Wife | — | Pennsylvania |
| 13 | Paul Barley | 36 | Son | Salesman | Pennsylvania |
| 14 | Fred Barley | 24 | Son | Laborer | Pennsylvania |
| 15 | Charles Barley | 21 | Son | New Worker | Pennsylvania |
| 16 | Joseph Piotrowski | 22 | Head | Laborer | Pennsylvania |
| 17 | Pauline Piotrowski | 22 | Wife | — | Pennsylvania |
| 18 | Paul Piotrowski | 1 | Son | — | Pennsylvania |
| 19 | Ida Meyer | 53 | Head | — | Pennsylvania |
| 20 | Leah Meyer | 30 | daughter | Bookkeeper | Pennsylvania |
| 21 | Carl Miller | 33 | Head | Pipe Cutter | Pennsylvania |
| 22 | Alva Miller | 30 | Wife | Cake Packer | Pennsylvania |
| 23 | John Druziewicz | 49 | Head | Laborer | Poland |
| 24 | Stephanie Druziewicz | 48 | Wife | — | Pennsylvania |
| 25 | Henry Druziewicz | 19 | Son | New Worker | Pennsylvania |
| 26 | Dolores Druziewicz | 16 | daughter | — | Pennsylvania |
| 27 | Steve Szymanski | 54 | Head | — | Poland |
| 28 | Helen Szymanski | 25 | daughter | — | Pennsylvania |
| 29 | Stella Szymanski | 15 | daughter | Laundress | Pennsylvania |
| 30 | Lucy Saltman | 65 | Head | — | Pennsylvania |
| 31 | Emma Protheroe | 64 | Head | — | Pennsylvania |
| 32 | Mary Murry | 64 | Lodger | — | Pennsylvania |
| 33 | George Petrach | 61 | Lodger | — | Pennsylvania |
| 34 | Isaac Friend | 56 | Head | Laborer | Pennsylvania |
| 35 | Sarah Friend | 58 | Wife | — | Pennsylvania |
| 36 | Thomas Friend | 27 | Son | Salesman | Pennsylvania |
| 37 | Mary Friend | 23 | daughter-in-law | — | Pennsylvania |
| 38 | Tony Parne | 41 | Head | Laborer | Italy |
| 39 | Stella Parne | 34 | Wife | — | Pennsylvania |
| 40 | Janice Parne | 3 | daughter | — | Pennsylvania |
Pedigree Summary
John + 3 siblings
Gen 1 · 5 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)