MJ
Margaret Johnston — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cass-County, Iowa
Our Model Tree links this Margaret Johnston across the 1920, 1930 and 1940 US Censuses in Cass-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1878), then head of a 6-person household.
Age 62
b. ~1878
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Iowa |
| Surname | Johnston |
| Given Name | Margaret M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Atlantic City |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Occupation | Agent |
| Industry | Mail Order |
| Class of Worker | OA |
| Hours Worked | 36 |
| Income (1939) | 270 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Agent |
| Township / Ward | Atlantic City |
| Est. Birth Year | ~1878 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Betty Sauer | Other | — | 13 | ~1927 |
| Margaret Johnston | Spouse | — | 62 | ~1878 |
| Stanford Johnston | Son | — | 25 | ~1915 |
| Leon Sauer | Other | — | 14 | ~1926 |
| Sam Johnston | Head | — | 62 | ~1878 |
| Mildred Sauer | Daughter | — | 35 | ~1905 |
Census Appearances
1920
Cass, Iowa
Spouse, age 42
Cass, Iowa · implied b. ~1878 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Cass, Iowa
Other, age 52
Cass, Iowa · implied b. ~1878 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Margaret |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 24 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Ohio |
| Occupation | Saleswoman |
| Industry | Dry goods store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cass-County, Iowa
Spouse, age 62
Cass-County, Iowa · implied b. ~1878 — 6 household members
| Surname | Johnston |
| Given Name | Margaret M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Atlantic City |
| 1935 Residence (County) | Cass |
| Occupation | Agent |
| Industry | Mail Order |
| Class of Worker | OA |
| Hours Worked | 36 |
| Income (1939) | 270 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Margaret Johnston across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Johnston
Spouse · 1940 · age 62 · b. ~1878 · 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 — Cass-County, Iowa
Open full size
1940 US Federal Census — Cass-County, Iowa
Page Contents
21 people indexed on this census page (nara:1940:m-t0627-01145-00167)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John H. Simmons | 84 | Head | — | Iowa |
| 2 | Sam W. Johnston | 62 | Head | — | Iowa |
| 3 | Margaret M. Johnston THIS PERSON | 62 | Wife | Agent | Iowa |
| 4 | Stanford Johnston | 25 | Son | Attendant | Iowa |
| 5 | Mildred Sauer | 35 | Daughter | Inspector | Iowa |
| 6 | Leon Sauer | 14 | Grandson | — | Iowa |
| 7 | Betty Sauer | 13 | Granddaughter | — | Iowa |
| 8 | W. Bruce Melenbacker | 54 | Head | Doctor Of Osteopathy | Canada English |
| 9 | Ida H. Melenbacker | 51 | Wife | — | Canada English |
| 10 | Melvin E. Schmitt | 31 | Head | Transmission Man | Illinois |
| 11 | Gretchen Schmitt | 31 | Wife | — | Iowa |
| 12 | Dorothy J. Schmitt | 5 | Daughter | — | Iowa |
| 13 | Philip E. Schmitt | 3 | Son | — | Iowa |
| 14 | Melvern E. Lau | 31 | Head | Track Supervisor | Iowa |
| 15 | Ruby L. Lau | 30 | Wife | — | Illinois |
| 16 | Beverly A. Lau | 7 | Daughter | — | Iowa |
| 17 | Larry D. Lau | 2 | Son | — | Iowa |
| 18 | William H. Borchardt | 43 | Head | Traveling Salesman | Iowa |
| 19 | Lulu F. Borchardt | 39 | Wife | — | Iowa |
| 20 | Jane A. Borchardt | 19 | Daughter | — | Iowa |
| 21 | William J. Borchardt | 18 | Son | — | Iowa |
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)