MP
Martha Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mitchell-County, Iowa
Our Model Tree links this Martha Peterson across the 1930 and 1940 US Censuses in Mitchell-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1899), then head of a 7-person household.
Age 41
b. ~1899
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mitchell-County, Iowa |
| Surname | Peterson |
| Given Name | Martha E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Mitchell |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Rock |
| Est. Birth Year | ~1899 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Martha Peterson | Spouse | — | 41 | ~1899 |
| Fredrick Peterson | Son | — | 18 | ~1922 |
| Adolph Peterson | Head | — | 45 | ~1895 |
| Alice Peterson | Daughter | — | 5 | ~1935 |
| Donald Peterson | Son | — | 12 | ~1928 |
| Ernest Peterson | Son | — | 14 | ~1926 |
| Elvin Peterson | Son | — | 17 | ~1923 |
Census Appearances
1930
Mitchell, Iowa
Other, age 31
Mitchell, Iowa · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Martha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mitchell-County, Iowa
Spouse, age 41
Mitchell-County, Iowa · implied b. ~1899 — 7 household members
| Surname | Peterson |
| Given Name | Martha E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Mitchell |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| 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 Martha Peterson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Peterson
Spouse · 1940 · age 41 · b. ~1899 · Iowa
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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 — Mitchell-County, Iowa
Open full size
1940 US Federal Census — Mitchell-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01183-00754)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Betty Jean Martin | 9 | Daughter | — | Iowa |
| 42 | Ray J. Witt | 29 | Head | Farmer | Iowa |
| 43 | Laura A. Witt | 29 | Wife | Stenographer | Iowa |
| 44 | Anna M. Witt | 63 | Mother | — | Wisconsin |
| 45 | Omar Fode | 29 | Hired man | Farm Labor | N Dakota |
| 46 | John Ones | 57 | Head | Farmer | Iowa |
| 47 | Rhoda O. Ones | 61 | Wife | — | Iowa |
| 48 | Tessy J. Ones | 26 | Daughter | Teacher | N Dakota |
| 49 | A. Winship Ones | 21 | Daughter | — | N Dakota |
| 50 | Justin R. Ones | 18 | Son | Laborer | Iowa |
| 51 | John J. Ones | 15 | Son | Laborer | Iowa |
| 52 | Iver L. Ones | 85 | Head | — | Norway |
| 53 | Emma M. Nelson | 50 | Daughter | — | Iowa |
| 54 | J. Eldon Nelson | 12 | Grandson | — | N. Dakota |
| 55 | Joyce M. Nelson | 15 | Granddaughter | — | N. Dakota |
| 56 | Hovel Flatla | 58 | Head | Farmer | Iowa |
| 57 | Iva Flatla | 48 | Wife | — | Iowa |
| 58 | Helen B. Flatla | 17 | Daughter | — | Iowa |
| 59 | Koila M. Flatla | 14 | Daughter | — | Iowa |
| 60 | Harold I. Flatla | 13 | Son | — | Iowa |
| 61 | Kjerste Flatla | 83 | Mother | — | Norway |
| 62 | Harold E. Witt | 40 | Head | Farmer | Iowa |
| 63 | Alyce K. Witt | 36 | Wife | — | Iowa |
| 64 | Ardis L. Witt | 7 | Daughter | — | Iowa |
| 65 | Thelma J. Witt | 4 | Daughter | — | Iowa |
| 66 | Lila M. Witt | 2 | Daughter | — | Iowa |
| 67 | Adolph K. Peterson | 45 | Head | Farmer | Denmark |
| 68 | Martha E. Peterson THIS PERSON | 41 | Wife | — | Illinois |
| 69 | Fredrick J. Peterson | 18 | Son | Farm Labor | Iowa |
| 70 | Elvin B. Peterson | 17 | Son | Farm Labor | Iowa |
| 71 | Ernest E. Peterson | 14 | Son | — | Iowa |
| 72 | Donald V. Peterson | 12 | Son | — | Iowa |
| 73 | Alice D. Peterson | 5 | Daughter | — | Iowa |
| 74 | John H. Wettman | 25 | Head | Farmer | Iowa |
| 75 | Alward Grossman | 22 | Hired man | Farm Labor | Iowa |
| 76 | Carl G. Nelson | 41 | Head | Farmer | Iowa |
| 77 | Clara C. Nelson | 39 | Wife | — | Iowa |
| 78 | Carroll A. Nelson | 5 | Son | — | Iowa |
| 79 | Arthur A. Sponheim | 46 | Head | Farmer | Iowa |
| 80 | Gertie C. Sponheim | 48 | Wife | — | Iowa |
Related Census Records
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)