MF
Martha Foster — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Joseph-County, Michigan
Our Model Tree links this Martha Foster across the 1930 and 1940 US Censuses in St.-Joseph-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1905), then head of a 6-person household.
Age 35
b. ~1905
Female
Spouse
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Joseph-County, Michigan |
| Surname | Foster |
| Given Name | Martha |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Lockport Township |
| 1935 Residence (County) | St. Joseph |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Lockport Township |
| Est. Birth Year | ~1905 |
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 Martha | Age | Birth yr |
|---|---|---|---|---|
| Harold Foster | Son | — | 15 | ~1925 |
| Elmer Foster | Head | — | 50 | ~1890 |
| Alfred Foster | Son | — | 17 | ~1923 |
| Julia Foster | Daughter | — | 9 | ~1931 |
| Martha Foster | Spouse | — | 35 | ~1905 |
| Yvonne Foster | Daughter | — | 11 | ~1929 |
Census Appearances
1930
St Joseph, …
Other, age 25
St Joseph, Michigan · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Martha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 16 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
St.-Joseph-County, Michigan
Spouse, age 35
St.-Joseph-County, Michigan · implied b. ~1905 — 6 household members
| Surname | Foster |
| Given Name | Martha |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Lockport Township |
| 1935 Residence (County) | St. Joseph |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Martha Foster across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Foster
Spouse · 1940 · age 35 · b. ~1905 · Michigan
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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 — St.-Joseph-County, Michigan
Open full size
1940 US Federal Census — St.-Joseph-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01817-00301)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | June Van Arman | 19 | daughter in law | Trimmer | Michigan |
| 42 | Ernest Van Arman | 0 | grandson | — | Michigan |
| 43 | Estes Griffin | 45 | head | Park Commissioner | Indiana |
| 44 | Minna S. Griffin | 43 | wife | — | Indiana |
| 45 | Marlin Griffin | 23 | son | Photo Engraver | Michigan |
| 46 | Charles Lancaster | 79 | father in law | — | Indiana |
| 47 | Marion Oberlander | 25 | head | Box Dept. | Michigan |
| 48 | Viola Oberlander | 23 | wife | — | Michigan |
| 49 | Rex Oberlander | 4 | son | — | Michigan |
| 50 | Ebenezer P. Hart | 72 | head | Trimmer | Michigan |
| 51 | Alice Hart | 67 | wife | — | Michigan |
| 52 | Mary Isabel Henslee | 31 | head | Tavern Owner | Indiana |
| 53 | Stanley Ecker | 26 | cousin | Attendant | Indiana |
| 54 | Charlie Orton | 56 | boarder | Manager | Illinois |
| 55 | Harold Healet | 38 | head | Machinist | Michigan |
| 56 | Florence Healet | 39 | wife | — | Michigan |
| 57 | Dale Healet | 17 | son | — | Michigan |
| 58 | Martin Jensen | 65 | head | Farmer | Denmark |
| 59 | Emmy B. Jensen | 58 | wife | — | Germany |
| 60 | Marie Louise Jensen | 19 | daughter | — | Michigan |
| 61 | Elmer Foster | 50 | head | Punch Press Operator | Ohio |
| 62 | Martha Foster THIS PERSON | 35 | wife | — | Indiana |
| 63 | Alfred Foster | 17 | son | Laborer | Michigan |
| 64 | Harold Foster | 15 | son | — | Michigan |
| 65 | Yvonne Foster | 11 | daughter | — | Michigan |
| 66 | Julia Mae Foster | 9 | daughter | — | Michigan |
| 67 | William Swanwick | 24 | head | Caretaker | Illinois |
| 68 | Phyllis Swanwick | 21 | wife | — | Michigan |
| 69 | John C. Fetch | 59 | head | Vault Manufacturer | Michigan |
| 70 | Nellis Fetch | 59 | wife | — | Canada-English |
| 71 | Milton Fetch | 39 | son | Post Office Clerk | Michigan |
| 72 | George Henry Clark | 71 | head | — | Michigan |
| 73 | Kate Clark | 74 | wife | — | Illinois |
| 74 | Wayne Clark | 38 | son | Box Dept. | Michigan |
| 75 | Otis S. White | 77 | head | — | Indiana |
| 76 | Clara May White | 78 | wife | — | Michigan |
| 77 | Gussie R. Dimmick | 50 | daughter | — | Michigan |
| 78 | Loretta Dimmick | 20 | daughter | Saleswoman | Michigan |
| 79 | Charles Houser | 77 | head | Farmer | Michigan |
| 80 | Eliza Houser | 69 | wife | — | Michigan |
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)