MG
Mary Guthrie — 1940 US Census Record
Model Tree available1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this Mary Guthrie across the 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed), with identified parents David & David — first a daughter (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | Guthrie |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Moline city |
| 1935 Residence (County) | Rock Island |
| Additional Details | |
| Industry | S |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Moline 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bessie Guthrie | Spouse | — | 53 | ~1887 |
| Mary Guthrie | Daughter | — | 23 | ~1917 |
| David Guthrie | Head | — | 58 | ~1882 |
Census Appearances
1920
Rock Island, …
Daughter, age 2
Rock Island, Illinois · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Guthrie |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Daughter, age 13
Rock Island, Illinois · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Guthrie |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rock-Island-County, Illinois
Daughter, age 23
Rock-Island-County, Illinois · implied b. ~1917 — 3 household members
| Surname | Guthrie |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Moline city |
| 1935 Residence (County) | Rock Island |
| Industry | S |
| Highest Grade | C 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 David Guthrie (~0.92 confidence) and father David Guthrie (~0.92 confidence) and father David Guthrie (~0.92 confidence) and mother Benedicta Guthrie (~0.92 confidence) and mother Bessie Guthrie (~0.92 confidence) and mother Birdie Guthrie (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Guthrie
b. ~1882
Source father
● Household
· direct · ~0.92
Father
David Guthrie
b. ~1888
Source father
● Household
· direct · ~0.92
Father
David Guthrie
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Benedicta Guthrie
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Bessie Guthrie
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Birdie Guthrie
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Guthrie
Daughter · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Rock-Island-County, Illinois
Open full size
1940 US Federal Census — Rock-Island-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00875-00955)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gustave C Swanson | 50 | Head | Contractor & Carpenter | Sweden |
| 2 | Rose M Swanson | 51 | Wife | — | Illinois |
| 3 | Elaine Swanson | 23 | Daughter | Operator | Illinois |
| 4 | Muriel J Swanson | 13 | Daughter | — | Illinois |
| 5 | David J Guthrie | 58 | Head | Shop Foreman | Iowa |
| 6 | Bessie R Guthrie | 53 | Wife | — | Iowa |
| 7 | Mary J Guthrie THIS PERSON | 23 | Daughter | — | Illinois |
| 8 | Kenneth R Hills | 44 | Head | Manager | Iowa |
| 9 | Luora W Hills | 42 | Wife | — | Iowa |
| 10 | Carmen A Hills | 10 | Daughter | — | Illinois |
| 11 | Charles H Hawk | 48 | Head | Cost Accountant | Illinois |
| 12 | Mary C Hawk | 39 | Wife | — | Illinois |
| 13 | Leonard A Hawk | 16 | Son | — | Illinois |
| 14 | George A Smith | 57 | Head | Tool-Maker | Illinois |
| 15 | Lillian Smith | 55 | Wife | — | Illinois |
| 16 | William Jr Rigel | 34 | Head | Electro Typer | Illinois |
| 17 | Phyllis L Rigel | 25 | Wife | — | Wyoming |
| 18 | David R Rigel | 4 | Daughter | — | Illinois |
| 19 | Doris A Rigel | 2 | Daughter | — | Illinois |
| 20 | Richard H Johnson | 29 | Head | Pressman | Illinois |
| 21 | Sophia Johnson | 52 | Mother | Charwoman | Illinois |
| 22 | Willis Ruschmann | 40 | Head | Cashier | Illinois |
| 23 | Ethel L Ruschmann | 38 | Wife | — | Illinois |
| 24 | Dorothea A Ruschmann | 12 | Daughter | — | Illinois |
| 25 | Barbara J Ruschmann | 10 | Daughter | — | Illinois |
| 26 | Marilyn J Ruschmann | 8 | Daughter | — | Illinois |
| 27 | Paul E Montgomery | 56 | Head | Salesman | Indiana |
| 28 | Irene M Montgomery | 57 | Wife | — | Indiana |
| 29 | Herbert M Smith | 45 | Head | Sheet Metal Work - Heating | Illinois |
| 30 | Marguerite B Smith | 43 | Wife | — | Illinois |
| 31 | Jean A Smith | 19 | Daughter | — | Illinois |
| 32 | Jerome M Smith | 12 | Son | — | Illinois |
| 33 | George W Seaman | 58 | Head | Operating Engineer | Illinois |
| 34 | Ida G Seaman | 53 | Wife | — | Illinois |
| 35 | Maud M Perry | 60 | Sister-in-law | Seamstress | Illinois |
| 36 | Otto Q Roller | 51 | Head | Production Manager | Indiana |
| 37 | Clara P Roller | 50 | Wife | — | Ohio |
| 38 | Edith H Roller | 18 | Daughter | — | Illinois |
| 39 | Alfred M Godfrey | 64 | Head | Locomotive Engineer | England |
| 40 | Kate C Godfrey | 64 | Wife | — | England |
Pedigree Summary
Mary
Gen 1 · 6 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)