MT
Mary Todd — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Montana
Our Model Tree links this Mary Todd across the 1920, 1930 and 1940 US Censuses in Madison-County, Montana (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 6-person household.
Age 50
b. ~1890
Female
Spouse
Born: Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Montana |
| Surname | Todd |
| Given Name | Mary V. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Madison Twp |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 12 |
| 1935 Residence | Same House |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Madison Twp |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Virginia Todd | Daughter | — | 18 | ~1922 |
| Lennie Todd | Head | — | 58 | ~1882 |
| Dick Todd | Son | — | 16 | ~1924 |
| Joe Todd | Son | — | 11 | ~1929 |
| Dan Todd | Son | — | 6 | ~1934 |
| Mary Todd | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Madison, Montana
Spouse, age 30
Madison, Montana · implied b. ~1890 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Todd |
| Given Name | Mary V. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
Madison, Montana
Spouse, age 41
Madison, Montana · implied b. ~1889 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Todd |
| Given Name | Mary G |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 26 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Madison-County, Montana
Spouse, age 50
Madison-County, Montana · implied b. ~1890 — 6 household members
| Surname | Todd |
| Given Name | Mary V. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Madison Twp |
| 1935 Residence (County) | Madison |
| Class of Worker | 0 |
| Highest Grade | No 12 |
| 1935 Residence | Same House |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 Todd 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 Todd
Spouse · 1940 · age 50 · b. ~1890 · Montana
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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 — Madison-County, Montana
Open full size
1940 US Federal Census — Madison-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02224-00187)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter J. Mcdonnell | 14 | Son | — | Montana |
| 2 | Patricia A. Mcdonnell | 12 | Daughter | — | Montana |
| 3 | Mary Ellen Mcdonnell | 10 | Daughter | — | Montana |
| 4 | Clarence A. Mcdonnell | 8 | Son | — | Montana |
| 5 | Felix A. Mcdonnell | 6 | Son | — | Montana |
| 6 | Anna Agnes Mcdonnell | 46 | Sister | — | Montana |
| 7 | Raleigh H. Tuthill | 51 | Head | Foreman | Illinois |
| 8 | Quien H. Tuthill | 42 | Wife | — | Michigan |
| 9 | Herman H. Hellwig | 49 | Head | Patrol Operator | Nebraska |
| 10 | Myrtle I. Hellwig | 38 | Wife | — | Ohio |
| 11 | Henry W. Hellwig | 15 | Son | — | Montana |
| 12 | Lena May Hellwig | 14 | Daughter | — | Montana |
| 13 | Lewis H. Thomas | 67 | Head | — | Nebraska |
| 14 | Luvena J. Thomas | 60 | Wife | — | Arkansas |
| 15 | Charles F. Thomas | 22 | Son | Laborer | Wyoming |
| 16 | Olive M. Thomas | 21 | Daughter-in-law | — | Montana |
| 17 | Lennie H. Todd | 58 | Head | Farmer | Virginia |
| 18 | Mary V. Todd THIS PERSON | 50 | Wife | — | Virginia |
| 19 | Virginia L. Todd | 18 | Daughter | — | Montana |
| 20 | Dick L. Todd | 16 | Son | — | Montana |
| 21 | Joe L. Todd | 11 | Son | — | Montana |
| 22 | Dan N. Todd | 6 | Son | — | Montana |
| 23 | H. O. Thompson | 59 | Head | Rancher | Montana |
| 24 | Flora E. Thompson | 52 | Wife | — | Montana |
| 25 | Ellis W. Thompson | 21 | Son | Cattle Raising | Montana |
| 26 | Lyonald H. Thompson | 6 | Grandson | — | Montana |
| 27 | Joan P. Day | 3 | Granddaughter | — | Montana |
| 28 | Mary A. Thexton | 60 | Head | — | Montana |
| 29 | Thomas L. Thexton | 39 | Son | Farmer | Montana |
| 30 | Adah Thexton | 39 | Daughter-in-law | — | Ohio |
| 31 | Albert E. Thexton | 32 | Son | Farmer | Montana |
| 32 | Donald O. Thexton | 17 | Son | — | Montana |
| 33 | Howard Pfrimmer | 34 | Head | Farm Laborer | Montana |
| 34 | Mary M. Pfrimmer | 26 | Wife | — | Montana |
| 35 | Mary A. Pfrimmer | 2 | Daughter | 0 | Montana |
| 36 | Betty L. Pfrimmer | 1 | Daughter | 0 | Montana |
| 37 | Loula E. Ritchie | 41 | Head | Farmer | Montana |
| 38 | James R. Ritchie | 11 | Son | — | Montana |
| 39 | Jessie A. Ritchie | 9 | Daughter | — | Montana |
| 40 | Bessie J. Ritchie | 8 | Daughter | — | Montana |
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)