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Mary Lawson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Mary Lawson across the 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Lawson |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | G-3 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1930 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Louise Lawson | Daughter | — | 7 | ~1933 |
| Mary Lawson | Daughter | — | 10 | ~1930 |
| Barbara Lawson | Daughter | — | 5 | ~1935 |
| Alfred Lawson | Head | — | 42 | ~1898 |
| Jack Lawson | Son | — | 13 | ~1927 |
| Melvin Lawson | Son | — | 11 | ~1929 |
| Louis Lawson | Son | — | 7 | ~1933 |
| Alfred Lawson | Son | — | 16 | ~1924 |
| Mamie Lawson | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Marion, Indiana
Daughter, age
Marion, Indiana · implied b. ~1930 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lawson |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 10
Marion-County, Indiana · implied b. ~1930 — 9 household members
| Surname | Lawson |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Class of Worker | 0 |
| Highest Grade | G-3 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Lawson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lawson
Daughter · 1940 · age 10 · b. ~1930 · Indiana
★ You are viewing this record
Sibling
Louise Lawson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfred Lawson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melvin Lawson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Lawson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Lawson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Lawson
Sibling · 1940 · age 5
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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01129-00915)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jessie D. Neal | 51 | Head | — | Kentucky |
| 2 | Charles Howard Neal | 22 | Son | Truck Driver | Indiana |
| 3 | Arvine Neal | 15 | Son | — | Indiana |
| 4 | Harry F. Wood | 48 | Head | Maintenance | Indiana |
| 5 | Nellie May Wood | 43 | Wife | — | Indiana |
| 6 | Arthur Rasmussen | 46 | Head | Waitress | Minnesota |
| 7 | Anzy Rasmussen | 31 | Wife | Brick Mason | Indiana |
| 8 | Duane Rasmussen | 12 | Son | — | Indiana |
| 9 | Allen Rasmussen | 10 | Son | — | Indiana |
| 10 | Shirley Ann Rasmussen | 5 | Daughter | — | Indiana |
| 11 | Alfred Lawson | 42 | Head | Laborer | Indiana |
| 12 | Mamie Lawson | 40 | Wife | — | Indiana |
| 13 | Alfred Jr. Lawson | 16 | Son | — | Indiana |
| 14 | Jack Lawson | 13 | Son | — | Indiana |
| 15 | Melvin Lawson | 11 | Son | — | Indiana |
| 16 | Mary Lou Lawson THIS PERSON | 10 | Daughter | — | Indiana |
| 17 | Louise Lawson | 7 | Daughter | — | Indiana |
| 18 | Louis Lawson | 7 | Son | — | Indiana |
| 19 | Barbara Lawson | 5 | Daughter | — | Indiana |
| 20 | Joseph Bates | 24 | Head | Building Maintenance | Indiana |
| 21 | Victorene Bates | 21 | Wife | — | Indiana |
| 22 | Charles Bates | 1 | Son | — | Indiana |
| 23 | Clay Holman | 24 | Head | Proprietor Garage | Oklahoma |
| 24 | Donha Holman | 21 | Wife | — | Indiana |
| 25 | Patsy Holman | 2 | Daughter | — | Indiana |
| 26 | Caroline Sue Holman | 0 | Daughter | — | Indiana |
| 27 | Charles W. Allen | 66 | Head | Teamster | Indiana |
| 28 | Hallie Allen | 56 | Wife | Housekeeper | Kentucky |
| 29 | Lucille Allen | 10 | Grandson | — | Indiana |
| 30 | Charles Nickles | 67 | Head | Crossing Watchman | Indiana |
| 31 | Lillie Nickles | 71 | Wife | — | Kentucky |
| 32 | Samuel C. Mosley | 47 | Head | Fireman | Virginia |
| 33 | Olina Mosley | 45 | Wife | — | Virginia |
| 34 | Jean Mosley | 18 | Daughter | Clerk | Ohio |
| 35 | James Mosley | 14 | Son | — | Ohio |
| 36 | Seldon Johnson | 26 | Son-in-law | Grinder | Kentucky |
| 37 | Helen Johnson | 22 | Daughter | — | Virginia |
| 38 | Patricia Johnson | 2 | Granddaughter | — | Indiana |
| 39 | Paul Johnson | 0 | Grandson | — | Indiana |
| 40 | Aaron Mcneal | 54 | Head | Casting Grinder | Ohio |
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)