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Robert Mccormick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert Mccormick across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | McCormick |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | New worker |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | H 8 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1924 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Betty Mccormick | Daughter | — | 15 | ~1925 |
| Geneva Mccormick | Daughter | — | 20 | ~1920 |
| Leona Mccormick | Daughter | — | 18 | ~1922 |
| Marlene Mccormick | Daughter | — | 8 | ~1932 |
| Florence Mccormick | Spouse | — | 42 | ~1898 |
| Lee Mccormick | Head | — | 45 | ~1895 |
| Charles Mccormick | Son | — | 10 | ~1930 |
| Richard Mccormick | Son | — | 11 | ~1929 |
| Robert Mccormick | Son | — | 16 | ~1924 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 6
Allegheny, Pennsylvania · implied b. ~1924 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 16
Allegheny-County, Pennsylvania · implied b. ~1924 — 9 household members
| Surname | McCormick |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | New worker |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | H 8 |
| 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 Robert Mccormick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Mccormick
Son · 1940 · age 16 · b. ~1924 · Pennsylvania
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Sibling
Leona Mccormick
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Mccormick
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Mccormick
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marlene Mccormick
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geneva Mccormick
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mccormick
Sibling · 1940 · age 10
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-t0627-03671-00579)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles Mellon | 68 | Head | Broker | Pennsylvania |
| 42 | George D. Mcbride | 69 | Head | — | Pennsylvania |
| 43 | Jean Jenkin | 43 | Daughter | — | Pennsylvania |
| 44 | George Whiteside | 30 | Head | Truck Driver | Pennsylvania |
| 45 | Irene Whiteside | 25 | Wife | Waitress | Pennsylvania |
| 46 | George Jr. Whiteside | 2 | Son | — | Pennsylvania |
| 47 | Peter Papanu | 39 | Head | Credit Manager | Pennsylvania |
| 48 | Ruth Papanu | 29 | Wife | — | Pennsylvania |
| 49 | Adai Mae Papanu | 13 | Daughter | — | Pennsylvania |
| 50 | Thomas Fishers | 37 | Head | Laborer | South Carolina |
| 51 | Ida Fishers | 43 | Wife | — | Alabama |
| 52 | David Henry | 25 | Step-son | Laborer | Alabama |
| 53 | Georgia Jones | 63 | Mother-in-law | — | Alabama |
| 54 | Harry Bryant | 26 | Head | Laborer | Georgia |
| 55 | Lee Mccormick | 45 | Head | Butcher | Pennsylvania |
| 56 | Florence Mccormick | 42 | Wife | — | Pennsylvania |
| 57 | Geneva Mccormick | 20 | Daughter | — | Pennsylvania |
| 58 | Leona Mccormick | 18 | Daughter | — | Pennsylvania |
| 59 | Robert Mccormick THIS PERSON | 16 | Son | New Worker | Pennsylvania |
| 60 | Betty Jane Mccormick | 15 | Daughter | — | Pennsylvania |
| 61 | Richard Mccormick | 11 | Son | — | Pennsylvania |
| 62 | Charles Mccormick | 10 | Son | — | Pennsylvania |
| 63 | Marlene Mccormick | 8 | Daughter | — | Pennsylvania |
| 64 | Pauline Scott | 36 | Head | — | Pennsylvania |
| 65 | Donald Scott | 10 | Son | — | Pennsylvania |
| 66 | Charles Enos | 70 | Lodger | — | Virginia |
| 67 | Frank Potter | 71 | Head | Salesman | New York |
| 68 | Cora Potter | 68 | Wife | — | Canada English |
| 69 | Bessie Mcfarland | 72 | Head | — | Pennsylvania |
| 70 | Margaret Mcfarland | 39 | Daughter | — | Pennsylvania |
| 71 | Thomas S. Mcfarland | 37 | Son | Clerk | Pennsylvania |
| 72 | Helen Mcfarland | 34 | Daughter | Stenographer | Pennsylvania |
| 73 | Grace Mcfarland | 31 | Daughter | Bookkeeper | Pennsylvania |
| 74 | Charles Walker | 45 | Head | Janitor | Virginia |
| 75 | Sophia Walker | 70 | Wife | — | France |
| 76 | Harold Walker | 40 | Son | Partner | Pennsylvania |
| 77 | William Becker | 43 | Head | Laborer | Pennsylvania |
| 78 | Emma Becker | 38 | Wife | — | Pennsylvania |
| 79 | Luella Becker | 15 | Daughter | — | Pennsylvania |
| 80 | William Shaw | 51 | Head | Legislator | Pennsylvania |
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)