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John Mccormick — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this John Mccormick across the 1920, 1930 and 1940 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1863), then head of a 2-person household.
Age 57
b. ~1863
Male
Head
Born: Pennsylvania
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Steel mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Braddock Borough |
| Est. Birth Year | ~1863 |
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 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mccormick | Daughter | — | 25 | ~1895 |
| John Mccormick | Head | — | 57 | ~1863 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 57
Allegheny, Pennsylvania · implied b. ~1863 — 2 household members
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Steel mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Other, age 68
Allegheny, Pennsylvania · implied b. ~1862 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormack |
| Given Name | John |
| Relationship to Head | Father-in-law |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| Age at First Marriage | 30 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | entered |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Other, age 77
Allegheny-County, Pennsylvania · implied b. ~1863 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | LODGER |
| Sex | M |
| Color / Race | White |
| Age | 77 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 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 Mccormick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mccormick
Head · 1920 · age 57 · b. ~1863 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Allegheny, Pennsylvania
Open full size
1920 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1509unit:1005)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Mccormick THIS PERSON | 57 | Head | Laborer | Pennsylvania |
| 52 | Margaret Mccormick | 25 | Daughter | — | Pennsylvania |
| 53 | Frank S. Gibson | 60 | Head | Barber | North Carolina |
| 54 | Hing Wah | 51 | Head | Laundry | China |
| 55 | George Vitrowal | 28 | Head | Laborer | Poland |
| 56 | Anna Vitrowal | 25 | Wife | — | Poland |
| 57 | Anthony Vitrowal | 5 | Son | — | Pennsylvania |
| 58 | Elizabeth Vitrowal | 4 | Daughter | — | Pennsylvania |
| 59 | Helen Vitrowal | 1 | Daughter | — | Pennsylvania |
| 60 | Henry H. Wells | 53 | Head | Moulder | Pennsylvania |
| 61 | Margaret Wells | 53 | Wife | — | Ohio |
| 62 | Bertha Gruchow | 59 | Head | — | Germany |
| 63 | Charles Gruchow | 33 | Son | Barber | Germany |
| 64 | Frank Gruchow | 30 | Son | Baggage Master | Germany |
| 65 | Joseph A. Drago | 30 | Head | Salesman | Austria |
| 66 | Anna R. Drago | 29 | Wife | — | Connecticut |
| 67 | Elsie A. Drago | 9 | Daughter | — | Connecticut |
| 68 | Joseph G. Drago | 7 | Son | — | Connecticut |
| 69 | Andrew F. Beck | 27 | Bro in law | Machinist | Connecticut |
| 70 | Levi Weaver | 59 | Head | Watchman | Pennsylvania |
| 71 | Margaret Weaver | 48 | Wife | — | Pennsylvania |
| 72 | Ray Weaver | 20 | Daughter | Clerk | Pennsylvania |
| 73 | Sleter Holmes | 30 | Head | Heater | Virginia |
| 74 | Grace Holmes | 24 | Wife | — | Virginia |
| 75 | Elizabeth Townsley | 11 | Neice | — | Virginia |
| 76 | John Jackson | 23 | Boarder | Wire Drawer | Alabama |
| 77 | Rufus Simpson | 38 | Boarder | Laborer | Virginia |
| 78 | Rosa White | 23 | Roomer | Cook | Florida |
| 79 | Madison Frye | 35 | Roomer | Laborer | Virginia |
| 80 | James White | 43 | Head | Laborer | Virginia |
| 81 | Sadie White | 37 | Wife | — | Virginia |
| 82 | Jerome Perkins | 27 | Head | Laborer | South Carolina |
| 83 | Jessie Perkins | 21 | Wife | — | South Carolina |
| 84 | Ernest E. Perkins | 2 | Son | — | Pennsylvania |
| 85 | William P. Keibler | 44 | Head | Laborer | Pennsylvania |
| 86 | Rose Keibler | 43 | Wife | — | Pennsylvania |
| 87 | Helen Keibler | 3 | Grand daughter | — | Pennsylvania |
| 88 | Ludwic Witt | 25 | Head | Laborer | Austria |
| 89 | Mary Witt | 27 | Wife | — | Austria |
| 90 | Chester Witt | 2 | Son | — | New York |
| 91 | Walter Witt | 0 | Son | — | Pennsylvania |
| 92 | Ludwic Rog | 27 | Head | Laborer | Austria |
| 93 | Annie Rog | 20 | Wife | — | Pennsylvania |
| 94 | Adelia Rog | 1 | Daughter | — | Pennsylvania |
| 95 | Walter Hadasby | 27 | Head | Laborer | Austria |
| 96 | Vera Hadasby | 24 | Wife | — | Austria |
| 97 | Julia Hadasby | 4 | Daughter | — | New York |
| 98 | Helen Hadasby | 2 | Daughter | — | New York |
| 99 | John Hadasby | 0 | Son | — | Pennsylvania |
| 100 | Frank Badalla | 44 | Head | Huckster | Italy |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)