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Mary Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Morgan-County, Illinois
Our Model Tree links this Mary Mason across the 1920, 1930 and 1940 US Censuses in Morgan-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 5-person household.
Age 53
b. ~1887
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Morgan-County, Illinois |
| Surname | Mason |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Election precinct |
| 1935 Residence (County) | Morgan |
| Additional Details | |
| Occupation | Housekeeping |
| Industry | Own home |
| Class of Worker | NP |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Housekeeping |
| Township / Ward | Election Precinct |
| Est. Birth Year | ~1887 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| George Mason | Head | — | 59 | ~1881 |
| John Mason | Other | — | 63 | ~1877 |
| Charles Loos | Other | — | 36 | ~1904 |
| Millard Mason | Son | — | 16 | ~1924 |
| Mary Mason | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Morgan, Illinois
Spouse, age 33
Morgan, Illinois · implied b. ~1887 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Morgan, Illinois
Spouse, age 42
Morgan, Illinois · implied b. ~1888 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 22 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Morgan-County, Illinois
Spouse, age 53
Morgan-County, Illinois · implied b. ~1887 — 5 household members
| Surname | Mason |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Election precinct |
| 1935 Residence (County) | Morgan |
| Occupation | Housekeeping |
| Industry | Own home |
| Class of Worker | NP |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| 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 Mason 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 Mason
Spouse · 1940 · age 53 · b. ~1887 · 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 — Morgan-County, Illinois
Open full size
1940 US Federal Census — Morgan-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00861-00892)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Cohnny H. Jackson | 79 | Head | Farmer | Illinois |
| 2 | Alen Jackson | 29 | Son | Farm Laborer | Illinois |
| 3 | Wilma Jackson | 26 | Daughter | Housekeeping | Illinois |
| 4 | John H. Covey | 65 | Head | Farmer | Illinois |
| 5 | Iulah Covey | 58 | Wife | Housekeeping | Illinois |
| 6 | Frank Canatsey | 58 | Head | Farm Laborer | Illinois |
| 7 | Iannia Canatsey | 53 | Wife | Housekeeping | Illinois |
| 8 | Russel Preston | 32 | Head | Laborer | Illinois |
| 9 | May Preston | 21 | Wife | Housekeeping | Kentucky |
| 10 | Wayne Britenstine | 27 | Head | 25 | Illinois |
| 11 | Gladys Britenstine | 21 | Wife | — | Illinois |
| 12 | Kenneth Britenstine | 4 | Son | — | Illinois |
| 13 | Alice Britenstine | 1 | Daughter | — | Illinois |
| 14 | Oral Smith | 37 | Head | 32 | Kentucky |
| 15 | Ida Smith | 29 | Wife | — | Kentucky |
| 16 | Elliott, Helen Smith | 7 | Daughter | — | Illinois |
| 17 | Jasper Mcneely | 65 | Head | 12 | Illinois |
| 18 | Hattie Mcneely | 64 | Wife | — | Missouri |
| 19 | Wilfred Clayton | 21 | Head | 48 | Illinois |
| 20 | Fern Clayton | 20 | Wife | — | Illinois |
| 21 | George Clayton | 1 | Son | — | Illinois |
| 22 | George Mason | 59 | Head | Farmer | Illinois |
| 23 | Mary Mason THIS PERSON | 53 | Wife | Housekeeping | Illinois |
| 24 | Millard Mason | 16 | Son | Farm Laborer | Illinois |
| 25 | Charles E. Loos | 36 | Son-in-law | Farm Laborer | Illinois |
| 26 | John Mason | 63 | Brother | Farm Laborer | Illinois |
| 27 | Fred Mills | 33 | Head | Farmer | Missouri |
| 28 | Clara D. Mills | 33 | Wife | Housekeeping | Illinois |
| 29 | Barbara Mills | 9 | Daughter | — | Illinois |
| 30 | Kenneth Mills | 7 | Son | — | Illinois |
| 31 | Charles Mills | 4 | Son | — | Illinois |
| 32 | Donna Mills | 3 | Daughter | — | Illinois |
| 33 | Herschel Howard | 39 | Head | 48 | Illinois |
| 34 | Mabel Howard | 31 | Wife | — | Illinois |
| 35 | Donna Jean Howard | 5 | Daughter | — | Illinois |
| 36 | Marjorie Howard | 2 | Daughter | — | Illinois |
| 37 | William Morgan | 44 | Head | Farmer | Illinois |
| 38 | Leona D. Morgan | 18 | Daughter | — | Illinois |
| 39 | Eloise C. Morgan | 16 | Daughter | — | Illinois |
| 40 | Barbara Ann Morgan | 3 | Daughter | — | Illinois |
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)