MG
Mary Gardner — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this Mary Gardner across the 1920, 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 3-person household.
Age 50
b. ~1890
Female
Spouse
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | Gardner |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Sangamon |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Springfield City |
| Est. Birth Year | ~1890 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Charles Gardner | Head | — | 49 | ~1891 |
| C Gardner | Son | — | 23 | ~1917 |
| Mary Gardner | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Sangamon, Illinois
Spouse, age 29
Sangamon, Illinois · implied b. ~1891 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gardner |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Sangamon, Illinois
Spouse, age 44
Sangamon, Illinois · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gardner |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 20 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Sangamon-County, Illinois
Spouse, age 50
Sangamon-County, Illinois · implied b. ~1890 — 3 household members
| Surname | Gardner |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Sangamon |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Gardner across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Gardner
Spouse · 1940 · age 50 · b. ~1890 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00885-00635)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Lawless | 33 | head | Hoisting Engineer | Illinois |
| 2 | Adeline Lawless | 25 | wife | — | Illinois |
| 3 | Sharon Lawless | 1 | daughter | — | Illinois |
| 4 | Madge Read | 19 | sister-in-law | Waitress | Illinois |
| 5 | Mildred Read | 19 | sister-in-law | — | Illinois |
| 6 | Leroy Leach | 41 | head | Chauffeur | Illinois |
| 7 | Daisy Leach | 41 | wife | — | Illinois |
| 8 | Donald Leach | 20 | son | Wood Work | Illinois |
| 9 | Virgil Leach | 18 | son | Wood Work | Illinois |
| 10 | Mary L. Mccarthy | 55 | head | — | Illinois |
| 11 | Benjamin Wood | 74 | head | — | Illinois |
| 12 | Arthur Hartung | 38 | head | Janitor | Illinois |
| 13 | Mary Hartung | 12 | daughter | — | Illinois |
| 14 | John Hartung | 10 | son | — | Illinois |
| 15 | Harry Bailey | 31 | head | Clerk | Illinois |
| 16 | Rhoda Bailey | 27 | wife | — | Illinois |
| 17 | Hiram Vollentine | 47 | head | Manager | Illinois |
| 18 | Ruth Vollentine | 43 | wife | — | Illinois |
| 19 | Donald Vollentine | 4 | son | — | Illinois |
| 21 | Burl Willis | 49 | head | Wholesale Salesman | Illinois |
| 22 | Pearl Willis | 50 | wife | — | Illinois |
| 23 | Addie Fayle | 56 | head | — | Kentucky |
| 24 | John Weedman | 31 | head | Laborer | Illinois |
| 25 | Edith Weedman | 26 | wife | — | Kentucky |
| 26 | Jo Ann Weedman | 5 | daughter | — | Illinois |
| 27 | Charles Gardner | 49 | head | Truck Driver | Kentucky |
| 28 | Mary Gardner THIS PERSON | 50 | wife | — | Kentucky |
| 29 | C. Ernest Gardner | 23 | son | Clerk | Illinois |
| 30 | Albert Pehlman | 23 | head | Packer | Illinois |
| 31 | Flora Pehlman | 26 | wife | — | Illinois |
| 32 | Harold Crolinton | 32 | head | Truck Driver | Illinois |
| 33 | Hazel Crolinton | 27 | wife | — | Illinois |
| 34 | Robert Crolinton | 6 | son | — | Illinois |
| 35 | Martin Coleman | 45 | head | Salesman | Illinois |
| 36 | Catherine Coleman | 42 | wife | — | Illinois |
| 37 | Dorothy Coleman | 18 | daughter | — | Illinois |
| 38 | Mary Frances Coleman | 17 | daughter | — | Illinois |
| 39 | Rita Coleman | 15 | daughter | — | Illinois |
| 40 | Patricia Coleman | 13 | daughter | — | Illinois |
Related Census Records
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)