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John Mccormick — 1930 US Census Record
Model Tree available1930 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), with identified parents James & John — first a son (b.~1908), then head of a 7-person household.
Age 22
b. ~1908
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | McCormick |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Muscle Steel Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Mechanic |
| 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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Martha Mccormick | Daughter | — | 17 | ~1913 |
| James Mccormick | Head | — | 72 | ~1858 |
| Joseph Mccormick | Son | — | 15 | ~1915 |
| Thomas Mccormick | Son | — | 19 | ~1911 |
| John Mccormick | Son | — | 22 | ~1908 |
| William Mccormick | Son | — | 13 | ~1917 |
| Martha Mccormick | Spouse | — | 43 | ~1887 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 11
Allegheny, Pennsylvania · implied b. ~1909 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 22
Allegheny, Pennsylvania · implied b. ~1908 — 7 household members
| Surname | McCormick |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ohio |
| Occupation | Mechanic |
| Industry | Muscle Steel Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
Son, age 31
Allegheny-County, Pennsylvania · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormack |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Clerk |
| Industry | Pittsburgh News |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 840 |
| Highest Grade | No 3 |
| 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 John Mccormick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Mccormick (~0.92 confidence) and father John Mccormack (~0.92 confidence) and mother Rose Mccormack (~0.92 confidence) and father John Mccormick (~0.92 confidence) and mother Martha Mccormick (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Mccormick
b. ~1858
Source father
● Household
· direct · ~0.92
Father
John Mccormack
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Rose Mccormack
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
John Mccormick
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Martha Mccormick
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mccormick
Son · 1930 · age 22 · b. ~1908 · Pennsylvania
★ You are viewing this record
Sibling
William Mccormick
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mccormick
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mccormick
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Mccormick
Sibling · 1930 · age 17
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
1930 US Federal Census — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel1975:0535)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Bardsley | 23 | Head | Accountant | Pennsylvania |
| 2 | Marion Bardsley | 23 | Wife | — | Pennsylvania |
| 3 | John Klemm | 55 | Head | Shipping Clerk | Pennsylvania |
| 4 | John W. Klemm | 24 | Son | Patrolman | Pennsylvania |
| 5 | Sara Klemm | 22 | Daughter | — | Pennsylvania |
| 6 | Bertha Wilson | 75 | Sister-law | — | Pennsylvania |
| 7 | Charles S. M. Wilkins | 60 | Head | Stock Clerk | Pennsylvania |
| 8 | Mary Wilkins | 49 | Wife | — | Pennsylvania |
| 9 | John H. R. Jones | 43 | Head | At Office | Pennsylvania |
| 10 | Mary V. Jones | 42 | Wife | — | Pennsylvania |
| 11 | John P. Jr. Jones | 16 | Son | Electrician | Pennsylvania |
| 12 | Mary V. Jones | 14 | Daughter | — | Pennsylvania |
| 13 | Madeline Jones | 12 | Daughter | — | Pennsylvania |
| 14 | Francis Jones | 10 | Son | — | Pennsylvania |
| 15 | Virginia Jones | 8 | Daughter | — | Pennsylvania |
| 16 | Nelloris Jones | 5 | Daughter | — | Pennsylvania |
| 17 | Edward Jones | 3 | Son | — | Pennsylvania |
| 18 | Charles H. Baker | 62 | Head | Foreman | Ohio |
| 19 | Bessie Baker | 44 | Wife | — | Ohio |
| 20 | Samuel Porter | 79 | Father-law | — | Ohio |
| 21 | Emil Nygaard | 31 | Head | Foreman | Denmark |
| 22 | Emma Nygaard | 30 | Wife | Maid | Germany |
| 23 | Charles J. Schade | 62 | Head | Sheet Metal | Pennsylvania |
| 24 | Mary E. Schade | 60 | Wife | — | Pennsylvania |
| 25 | George Schukit | 52 | Head | Butcher | Pennsylvania |
| 26 | Cora Schukit | 53 | Wife | — | Pennsylvania |
| 27 | Olaf M. Ippe | 63 | Head | Architect | Norway |
| 28 | Esther E. Ippe | 36 | Daughter | Teacher | Pennsylvania |
| 29 | Sigrid S. Ippe | 34 | Daughter | Teacher | Pennsylvania |
| 30 | Helen J. Ippe | 28 | Daughter | Teacher | Pennsylvania |
| 31 | Ruth M. Ippe | 21 | Daughter | — | Pennsylvania |
| 32 | George Eberle | 45 | Head | Foreman | Pennsylvania |
| 33 | Alice M. Eberle | 61 | Wife | — | Ohio |
| 34 | Harry Eberle | 39 | Son | Drug Clerk | Pennsylvania |
| 35 | Mary Eberle | 37 | Daughter | Book-Keeper | Pennsylvania |
| 36 | Edward Etherley | 52 | Head | Plumber | Massachusetts |
| 37 | Josephine Etherley | 56 | Wife | — | New Jersey |
| 38 | Richard Branham | 50 | Head | Chauffeur | District Columbia |
| 39 | Emma Branham | 48 | Wife | — | District Columbia |
| 40 | Malrey Susan Branham | 85 | Mother-law | Maid | District Columbia |
| 41 | Oliver James | 34 | Head | Salesman | Ohio |
| 42 | Pauline E. James | 64 | Wife | — | Pennsylvania |
| 43 | Keillen Louise James | 54 | Sister-law | — | Pennsylvania |
| 44 | James J. Mccormick | 72 | Head | Shopman | Pennsylvania |
| 45 | Martha E. Mccormick | 43 | Wife | — | Ohio |
| 46 | John Jr. Mccormick THIS PERSON | 22 | Son | Mechanic | Pennsylvania |
| 47 | Thomas Mccormick | 19 | Son | Service Man | Pennsylvania |
| 48 | Martha Mccormick | 17 | Daughter | — | Pennsylvania |
| 49 | Joseph Mccormick | 15 | Son | — | Pennsylvania |
| 50 | William Mccormick | 13 | Son | — | Pennsylvania |
Related Census Records
Pedigree Summary
John + 4 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 1930 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)