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Margaret Mccormick — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Margaret Mccormick across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Charles & Charles — first a daughter (b.~1910), then head of a 9-person household.
Age 30
b. ~1910
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | McCormick |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Shaler Township |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Clerk-Cont. |
| Industry | Candy Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk-Cont. |
| Township / Ward | Shaler Township |
| Est. Birth Year | ~1910 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Mccormick | Daughter | — | 28 | ~1912 |
| Paul Mccormick | Other | — | 33 | ~1907 |
| Edward Mccormick | Son | — | 32 | ~1908 |
| Dorothy Mccormick | Daughter | — | 20 | ~1920 |
| Josephine Mccormick | Daughter | — | 20 | ~1920 |
| John Mccormick | Head | — | 61 | ~1879 |
| Francis Mccormick | Spouse | — | 58 | ~1882 |
| Margaret Mccormick | Daughter | — | 30 | ~1910 |
| Sylvester Mccormick | Son | — | 14 | ~1926 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 10
Allegheny, Pennsylvania · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| 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
Daughter, age 20
Allegheny, Pennsylvania · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Stenographer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 30
Allegheny-County, Pennsylvania · implied b. ~1910 — 9 household members
| Surname | McCormick |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Shaler Township |
| 1935 Residence (County) | Allegheny |
| Occupation | Clerk-Cont. |
| Industry | Candy Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | No 8 |
| 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 Margaret Mccormick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Mccormick (~0.92 confidence) and father Charles Mccormick (~0.92 confidence) and father John Mccormick (~0.92 confidence) and mother Dominica Mccormick (~0.92 confidence) and mother Francis Mccormick (~0.92 confidence) and mother Louise Mccormick (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Mccormick
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Charles Mccormick
b. ~1879
Source father
● Household
· direct · ~0.92
Father
John Mccormick
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Dominica Mccormick
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Francis Mccormick
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Louise Mccormick
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Mccormick
Daughter · 1940 · age 30 · b. ~1910 · Pennsylvania
★ You are viewing this record
Sibling
Edward Mccormick
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Mccormick
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Mccormick
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sylvester Mccormick
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Mccormick
Sibling · 1940 · age 20
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-t0627-03417-00240)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Bernbanec | 58 | Head | Laborer | Yugoslavia |
| 2 | Anna Bernbanec | 55 | Wife | — | Yugoslavia |
| 3 | Joseph J. Balquist | 36 | Head | Shipping Clerk | Pennsylvania |
| 4 | Mary J. Balquist | 39 | Wife | — | Pennsylvania |
| 5 | Robert J. Balquist | 6 | Son | — | Pennsylvania |
| 6 | Michael J. Popovic | 36 | Lodger | Carpenter | Pennsylvania |
| 7 | John Mccormick | 61 | Head | Laborer | Germany |
| 8 | Francis B. Mccormick | 58 | Wife | — | Pennsylvania |
| 9 | Edward Mccormick | 32 | Son | Planter | Pennsylvania |
| 10 | Margaret Mccormick THIS PERSON | 30 | Daughter | Clerk-Cont. | Pennsylvania |
| 11 | Paul Mccormick | 33 | Son-in-law | Laborer | Pennsylvania |
| 12 | Gertrude M. Mccormick | 28 | Daughter | — | Pennsylvania |
| 13 | Dorothy G. Mccormick | 20 | Daughter | Nurse Helper | Pennsylvania |
| 14 | Josephine M. Mccormick | 20 | Daughter | — | Pennsylvania |
| 15 | Sylvester Mccormick | 14 | Son | — | Pennsylvania |
| 16 | Robt. Frany | 65 | Head | Retired | Pennsylvania |
| 17 | Rose Frany | 59 | Wife | — | Pennsylvania |
| 18 | Margaret Frany | 32 | Daughter | Sales Clerk | Pennsylvania |
| 19 | Fred. G. Frey | 39 | Head | Trucking Laborer | Pennsylvania |
| 20 | Laura E. Frey | 37 | Wife | — | Pennsylvania |
| 21 | Cornett H. Cumming | 27 | Head | Operator | Pennsylvania |
| 22 | Irene M. Cumming | 24 | Wife | — | Pennsylvania |
| 23 | Maureen E. Cumming | 1 | Daughter | — | Pennsylvania |
| 24 | Hilda R. Sommerlin | 21 | Lodger | Auto Clerk | Pennsylvania |
| 25 | John G. Moelter | 44 | Head | Machinist | Pennsylvania |
| 26 | Rhea M. Moelter | 41 | Wife | — | Pennsylvania |
| 27 | Loyola R. Moelter | 20 | Daughter | Tele. Operator | Pennsylvania |
| 28 | Rose Marie Moelter | 12 | Daughter | — | Pennsylvania |
| 29 | Regina M. Moelter | 11 | Daughter | — | Pennsylvania |
| 30 | Dolores J. Moelter | 11 | Daughter | — | Pennsylvania |
| 31 | Charles F. Jestadt | 21 | Head | Laborer | Pennsylvania |
| 32 | Catherine M. Jestadt | 19 | Wife | — | Pennsylvania |
| 33 | Charles W. Shaw | 64 | Head | W.P.A. | Pennsylvania |
| 34 | Stella E. Shaw | 50 | Wife | — | Pennsylvania |
| 35 | Clifford C. Shaw | 22 | Son | New Worker | Pennsylvania |
| 36 | Elmer E. Shaw | 20 | Daughter | House Keeper | Pennsylvania |
| 37 | Harrison C. Shaw | 18 | Son | — | Pennsylvania |
| 38 | Annabelle Shaw | 16 | Daughter | — | Pennsylvania |
| 39 | Margery J. Shaw | 14 | Daughter | — | Pennsylvania |
| 40 | John Shaw | 12 | Son | — | Pennsylvania |
Pedigree Summary
Margaret + 5 siblings
Gen 1 · 6 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)