MJ
Marjorie Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Crawford-County, Iowa
Our Model Tree links this Marjorie Johnson across the 1930 and 1940 US Censuses in Crawford-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Crawford-County, Iowa |
| Surname | Johnson |
| Given Name | Marjorie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Denison |
| 1935 Residence (County) | Crawford |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Denison |
| Est. Birth Year | ~1928 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marjorie | Age | Birth yr |
|---|---|---|---|---|
| Robert Johnson | Son | — | 19 | ~1921 |
| Paul Johnson | Head | — | 50 | ~1890 |
| Marjorie Johnson | Daughter | — | 12 | ~1928 |
| Minnie Johnson | Spouse | — | 47 | ~1893 |
| George Johnson | Son | — | 23 | ~1917 |
| Betty Johnson | Daughter | — | 17 | ~1923 |
| Donald Johnson | Son | — | 15 | ~1925 |
| Pauline Johnson | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Crawford, Iowa
Daughter, age 2
Crawford, Iowa · implied b. ~1928 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Marjorie A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Minnesota |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Crawford-County, Iowa
Daughter, age 12
Crawford-County, Iowa · implied b. ~1928 — 8 household members
| Surname | Johnson |
| Given Name | Marjorie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Denison |
| 1935 Residence (County) | Crawford |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| 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 Marjorie Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marjorie Johnson
Daughter · 1940 · age 12 · b. ~1928 · Iowa
★ You are viewing this record
Sibling
Betty Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Johnson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Johnson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Crawford-County, Iowa
Open full size
1940 US Federal Census — Crawford-County, Iowa
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01152-00143)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Harding | 63 | Head | Lawyer | Illinois |
| 2 | Lillian Grau|Graw | 35 | Lodger | Teacher | Iowa |
| 3 | Alfred Rohwer | 53 | Head | Electrician | Iowa |
| 4 | Ella Rohwer | 53 | Wife | — | Nebraska |
| 5 | Robert Rohwer | 19 | Son | — | Iowa |
| 6 | Alfred Jr. Rohwer | 16 | Son | — | Iowa |
| 7 | Richard Rohwer | 14 | Son | — | Iowa |
| 8 | John Rohwer | 13 | Son | — | Iowa |
| 9 | Hellen Rohwer | 11 | Daughter | — | Iowa |
| 11 | Ray H. Thompson | 51 | Head | Salesman | Iowa |
| 12 | Cora B. Thompson | 52 | Wife | Stenographer | Iowa |
| 13 | Herbert Gronau | 37 | Head | Laborer | Iowa |
| 14 | Eunice Gronau | 34 | Wife | — | Kansas |
| 15 | Evelyn Gronau | 7 | Daughter | — | Iowa |
| 16 | Donald Gronau | 2 | Son | — | Iowa |
| 17 | William Gronau | 0 | Son | — | Iowa |
| 18 | Geo. D. Robinson | 38 | Head | Chiropractor | Nebraska |
| 19 | Arnold M. Sondra | 30 | Head | Assistant Editor | Iowa |
| 20 | Christine E. Sondra | 30 | Wife | Home Economist | Iowa |
| 21 | Arthur Graham | 37 | Head | Auto Service | Iowa |
| 22 | Thelma Graham | 32 | Wife | — | Iowa |
| 23 | Henry Bell | 55 | Head | Architect | Iowa |
| 24 | Christina Bell | 78 | Mother | — | Germany |
| 25 | Fred Broderson | 38 | Head | Proprietor | Iowa |
| 26 | Hilda M. Broderson | 35 | Wife | Bookkeeper | Iowa |
| 28 | Minnie Wiese | 44 | Head | Maid | Germany |
| 29 | Dorothy Wiese | 18 | Daughter | Teacher | Iowa |
| 30 | Walter Wiese | 15 | Son | Laborer | Iowa |
| 31 | Robert Wiese | 4 | Son | — | Iowa |
| 33 | Paul R. Johnson | 50 | Head | County Engineer | Iowa |
| 34 | Minnie Johnson | 47 | Wife | — | Minnesota |
| 35 | George R. Johnson | 23 | Son | Student | Minnesota |
| 36 | Pauline Johnson | 21 | Daughter | Student | Minnesota |
| 37 | Robert Johnson | 19 | Son | Student | Minnesota |
| 38 | Betty Lou Johnson | 17 | Daughter | Student | Minnesota |
| 39 | Donald Johnson | 15 | Son | Student | Minnesota |
| 40 | Marjorie Johnson THIS PERSON | 12 | Daughter | — | 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)