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Margaret Mccormick — 1940 US Census Record
Model Tree available1940 United States Federal Census · Knox-County, Ohio
Our Model Tree links this Margaret Mccormick across the 1920, 1930 and 1940 US Censuses in Knox-County, Ohio (XGBoost, ~Confirmed), with identified parents William & Ada — first a daughter (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Knox-County, Ohio |
| Surname | McCormick |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Mt. Vernon |
| 1935 Residence (County) | Knox |
| Additional Details | |
| Occupation | Librarian |
| Industry | Public Library |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 75 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Librarian |
| Township / Ward | Mt Vernon |
| Est. Birth Year | ~1914 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Ada Mccormick | Head | — | 61 | ~1879 |
| Joseph Mccormick | Son | — | 31 | ~1909 |
| Margaret Mccormick | Daughter | — | 26 | ~1914 |
Census Appearances
1920
Knox, Ohio
Daughter, age 6
Knox, Ohio · implied b. ~1914
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | McCormick |
| Given Name | Margaret |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Knox, Ohio
Daughter, age 16
Knox, Ohio · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | Margaret D. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Knox-County, Ohio
Daughter, age 26
Knox-County, Ohio · implied b. ~1914 — 3 household members
| Surname | McCormick |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Mt. Vernon |
| 1935 Residence (County) | Knox |
| Occupation | Librarian |
| Industry | Public Library |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 75 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 William Mccormick (~0.92 confidence) and mother Ada Mccormick (~0.92 confidence) and mother Alice Mccormick (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Mccormick
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Ada Mccormick
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Alice Mccormick
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Mccormick
Daughter · 1940 · age 26 · b. ~1914 · Ohio
★ You are viewing this record
Sibling
Joseph Mccormick
Sibling · 1940 · age 31
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 — Knox-County, Ohio
Open full size
1940 US Federal Census — Knox-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03093-00296)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ann Allen | 17 | Wife | — | Ohio |
| 42 | Hugh Lamb | 25 | Head | Kiln Operator | Ohio |
| 43 | Mabel Lamb | 25 | Wife | Waitress | Ohio |
| 44 | Betty Jane Lamb | 5 | Daughter | — | Ohio |
| 45 | Hugh R. Lamb | 0 | Son | — | Ohio |
| 46 | Cleveland Lukes | 56 | Head | Carpenter | Ohio |
| 47 | Lilla M. Lukes | 59 | Wife | — | Ohio |
| 48 | Louis Simmons | 35 | Head | Glass-Worker | Ohio |
| 49 | Ann Simmons | 33 | Wife | — | Ohio |
| 50 | Helen Simmons | 16 | Daughter | — | Ohio |
| 51 | Hugh Watson | 34 | Head | Attendant | Scotland |
| 52 | Zouie Watson | 27 | Wife | Sales-Lady | Ind |
| 53 | Edw E. Beeman | 23 | Head | Machinist | Ohio |
| 54 | Rita Beeman | 21 | Wife | — | Ohio |
| 55 | Thelma Beeman | 3 | Daughter | — | Ohio |
| 56 | Terrence Beeman | 1 | Son | — | Ohio |
| 57 | Ethel Shoemaker | 26 | Maid | Maid | Ohio |
| 58 | Chas C. Mcclusky | 51 | Head | Millwright | Penn |
| 59 | Elizabeth Mcclusky | 50 | Wife | — | W. Va |
| 60 | Lynn Thomas | 25 | Son-in-law | Budget-Mgr | Ohio |
| 61 | Charlotte Thomas | 24 | Daughter | — | W. Va |
| 62 | John Mullin | 65 | Head | Retired | Ohio |
| 63 | C. M. Stamp | 69 | Head | Retired | Ohio |
| 64 | Ada S. Mccormick | 61 | Head | — | Ohio |
| 65 | Margaret Mccormick THIS PERSON | 26 | Daughter | Librarian | Ohio |
| 66 | Joseph S. Mccormick | 31 | Son | Laminator | Ohio |
| 67 | Edw. A. Schlairet | 62 | Head | Manager | Ohio |
| 68 | Margaret Schlairet | 60 | Wife | — | France |
| 69 | Genevieve Schlairet | 31 | Daughter | Book-Keeper | Ohio |
| 70 | Chas V. Schlairet | 27 | Son | Asst Manager | Ohio |
| 71 | Mary Alice Schlairet | 21 | Daughter | Clerk | Ohio |
| 72 | W. L. Custis | 54 | Head | Minister | Ohio |
| 73 | Hettie B. Custis | 49 | Wife | — | Penn |
| 74 | Robert Custis | 22 | Son | Clerk | Ohio |
| 75 | Alex P. Farr | 79 | Head | — | Ohio |
| 76 | Roger A. Farr | 39 | Son | Dentist | Ohio |
| 77 | Lorinda Thomas | 62 | Head | — | W. Va |
| 78 | Clara Mclarnan | 25 | Lodger | — | Ohio |
| 79 | Conard Mclarnan | 25 | Lodger | Glass-Worker | Ohio |
| 80 | Geo. W. Smith | 38 | Lodger | Printer | Del |
Pedigree Summary
Margaret + 1 sibling
Gen 1 · 3 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)