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Mary Atkinson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Indiana
Our Model Tree links this Mary Atkinson across the 1930 and 1940 US Censuses in Lake-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Indiana |
| Surname | Atkinson |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Hammond |
| Est. Birth Year | ~1929 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Atkinson | Son | — | 6 | ~1934 |
| William Atkinson | Head | — | 37 | ~1903 |
| Mary Atkinson | Daughter | — | 11 | ~1929 |
| Phyllis Atkinson | Daughter | — | 4 | ~1936 |
| David Atkinson | Son | — | 2 | ~1938 |
| Mildred Atkinson | Spouse | — | 30 | ~1910 |
| Sarah Atkinson | Daughter | — | ~1940 |
Census Appearances
1930
Cook, Illinois
Other, age 1
Cook, Illinois · implied b. ~1929 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Atkinson |
| Given Name | Mary Lou |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Indiana |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lake-County, Indiana
Daughter, age 11
Lake-County, Indiana · implied b. ~1929 — 7 household members
| Surname | Atkinson |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | No 3 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Mary Atkinson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Atkinson
Daughter · 1940 · age 11 · b. ~1929 · Indiana
★ You are viewing this record
Sibling
Phyllis Atkinson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Atkinson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Atkinson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Atkinson
Sibling · 1940 · age
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 — Lake-County, Indiana
Open full size
1940 US Federal Census — Lake-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01066-00979)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Samuel Munn | 45 | Head | Temperature Operator | N Carolina |
| 2 | Martha Munn | 44 | Wife | — | Indiana |
| 3 | Elaine Munn | 19 | Daughter | House Maid | Indiana |
| 4 | Thomas Munn | 12 | Son | — | Indiana |
| 5 | Robert Munn | 10 | Son | — | Indiana |
| 6 | Patricia Munn | 7 | Daughter | — | Indiana |
| 7 | Jacqueline Munn | 4 | Daughter | — | Indiana |
| 8 | Paul R. Shipley | 30 | Head | Laborer | Illinois |
| 9 | Anna M. Shipley | 33 | Wife | — | Indiana |
| 10 | Hester Layton | 34 | Head | House Keeper | Germany |
| 11 | Charles Brown | 14 | Son | — | Iowa |
| 12 | Randall Layton | 8 | Son | — | Ohio |
| 13 | Carroll Layton | 1 | Daughter | — | Indiana |
| 14 | William E. Atkinson | 37 | Head | Crane Man | Illinois |
| 15 | Mildred Atkinson | 30 | Wife | — | Indiana |
| 16 | Mary Lou Atkinson THIS PERSON | 11 | Daughter | — | Illinois |
| 17 | James Harley Atkinson | 6 | Son | — | Illinois |
| 18 | Phyllis Hope Atkinson | 4 | Daughter | — | Illinois |
| 19 | David Paul Atkinson | 2 | Son | — | Indiana |
| 20 | Sarah Faith Atkinson | 0 | Daughter | — | Indiana |
| 21 | James Mcguire | 38 | Head | Draftsman | Indiana |
| 22 | Myrtle Mcguire | 33 | Wife | — | Illinois |
| 23 | Lorraine Dawson | 12 | Daughter | — | Indiana |
| 24 | Eugene Hughes | 30 | Head | Stationary Fireman | Pennsylvania |
| 25 | Gertrude Hughes | 24 | Wife | — | Pennsylvania |
| 26 | Harriet Hughes | 6 | Daughter | — | Indiana |
| 27 | Arthur Hughes | 3 | Son | — | Indiana |
| 28 | Merle Koch | 33 | Head | Switch Tender | Indiana |
| 29 | Kathryn Koch | 30 | Wife | Telephone Operator | Indiana |
| 30 | Kathryn Koch | 3 | Daughter | — | Indiana |
| 31 | Betty Ann Koch | 1 | Daughter | — | Indiana |
| 32 | Max Tuszynski | 41 | Head | Electrical Salesman | Minnesota |
| 33 | Lillian Tuszynski | 31 | Wife | — | Iowa |
| 34 | Keith Tuszynski | 11 | Son | — | S. Dakota |
| 35 | Donald Tuszynski | 10 | Son | — | S. Dakota |
| 36 | Deloris Tuszynski | 8 | Daughter | — | S. Dakota |
| 37 | Charles York | 28 | Head | Laborer | Indiana |
| 38 | Helene D. York | 26 | Wife | — | Indiana |
| 39 | Helene York | 2 | Daughter | — | Indiana |
| 40 | Charles David York | 0 | Son | — | Indiana |
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)