MG
Mary Guthrie — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Illinois
Our Model Tree links this Mary Guthrie across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Thomas — first a daughter (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Illinois |
| Surname | Guthrie |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Mt. Vernon city |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Chicken Brooder |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 832 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Stenographer |
| Township / Ward | Mt Vernon City |
| Est. Birth Year | ~1917 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Guthrie | Daughter | — | 23 | ~1917 |
| Nadine Guthrie | Daughter | — | 30 | ~1910 |
| Thomas Guthrie | Head | — | 79 | ~1861 |
| Ida Guthrie | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Jefferson, Illinois
Daughter, age 3
Jefferson, Illinois · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Guthrie |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Jefferson, Illinois
Daughter, age 13
Jefferson, Illinois · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Guthrie |
| Given Name | Mary R |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Jefferson-County, Illinois
Daughter, age 23
Jefferson-County, Illinois · implied b. ~1917 — 4 household members
| Surname | Guthrie |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Mt. Vernon city |
| 1935 Residence (County) | Jefferson |
| Occupation | Stenographer |
| Industry | Chicken Brooder |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 832 |
| Highest Grade | Hs 4 |
| 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 Guthrie across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Guthrie (~0.92 confidence) and father Thomas Guthrie (~0.92 confidence) and mother Ida Guthrie (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Guthrie
b. ~1861
Source father
● Household
· direct · ~0.92
Father
Thomas Guthrie
b. ~1861
Source father
● Household
· direct · ~0.92
Mother
Ida Guthrie
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Guthrie
Daughter · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Sibling
Nadine Guthrie
Sibling · 1940 · age 30
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 — Jefferson-County, Illinois
Open full size
1940 US Federal Census — Jefferson-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00816-00644)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bessie Magyar | 36 | Wife | Presser | Illinois |
| 2 | Clyde Jr. Magyar | 12 | Son | — | Illinois |
| 3 | Doris Magyar | 8 | Daughter | — | Illinois |
| 4 | Helen Magyar | 6 | Daughter | — | Illinois |
| 5 | George Magyar | 3 | Son | — | Illinois |
| 6 | Walter C. Jones | 34 | Head | Trucker | Illinois |
| 7 | Janivia Jones | 32 | Wife | — | Illinois |
| 8 | Wilma Maxine Jones | 16 | Daughter | — | Illinois |
| 9 | Betty Loraine Jones | 14 | Daughter | — | Illinois |
| 10 | Verna Mae Jones | 11 | Daughter | — | Illinois |
| 11 | Walter Jr. Jones | 8 | Son | — | Illinois |
| 12 | Mark Harpole | 72 | Head | — | Illinois |
| 13 | Lucille Harpole | 68 | Wife | — | Missouri |
| 14 | Robert Marks | 20 | Boarder | Truck Driver | Illinois |
| 15 | Chan. R. Watts | 31 | Head | Truck Driver | Illinois |
| 16 | Nora Watts | 35 | Wife | — | Arkansas |
| 17 | Harold Lloyd Watts | 3 | Son | — | Illinois |
| 18 | Charlotte Watts | 1 | Daughter | — | Illinois |
| 19 | Hern Adcock | 27 | Head | Attendant | Illinois |
| 20 | Jean Adcock | 27 | Wife | — | Illinois |
| 21 | Ronald Adcock | 1 | Son | — | Illinois |
| 22 | Riley W. M. Haynes | 38 | Head | Laborer | Illinois |
| 23 | Milerva Haynes | 37 | Wife | — | Illinois |
| 24 | Dorothy Haynes | 17 | Daughter | — | Illinois |
| 25 | Kenneth Haynes | 3 | Son | — | Illinois |
| 26 | Thomas H. Guthrie | 79 | Head | — | Illinois |
| 27 | Ida B. Guthrie | 61 | Wife | — | Illinois |
| 28 | Nadine Guthrie | 30 | Daughter | Operator | Illinois |
| 29 | Mary Lou Guthrie THIS PERSON | 23 | Daughter | Stenographer | Illinois |
| 30 | Thomas J. Harper | 65 | Head | Laborer | Illinois |
| 31 | Minnie Harper | 65 | Wife | — | Illinois |
| 32 | Ray Harper | 21 | Son | Waiter | Illinois |
| 33 | Lawrence W. Sweetin | 58 | Head | Barber | Illinois |
| 34 | Dellar Sweetin | 56 | Wife | — | Kentucky |
| 35 | James H. Harmon | 74 | Head | — | Illinois |
| 36 | Nettie Harmon | 63 | Wife | — | Illinois |
| 37 | James Order | 46 | Head | Laborer | Illinois |
| 38 | Rollie Order | 32 | Wife | — | Illinois |
| 39 | Gerald Order | 11 | Son | — | Illinois |
| 40 | Jeanette Order | 10 | Daughter | — | Illinois |
Pedigree Summary
Mary + 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)