MJ
Margaret Johnston — 1940 US Census Record
Model Tree available1940 United States Federal Census · Otero-County, Colorado
Our Model Tree links this Margaret Johnston across the 1920, 1930 and 1940 US Censuses in Otero-County, Colorado (XGBoost, ~Confirmed), with identified parents Nellie & Nellie — first a daughter (b.~1915), then head of a 6-person household.
Age 25
b. ~1915
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Otero-County, Colorado |
| Surname | Johnston |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | La Junta City |
| 1935 Residence (County) | Otero |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 5 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | La Junta City |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| Margaret Johnston | Daughter | — | 25 | ~1915 |
| John Johnston | Son | — | 15 | ~1925 |
| Nellie Johnston | Spouse | — | 55 | ~1885 |
| Anna Ebersole | Other | — | 59 | ~1881 |
| Sherwin Johnston | Son | — | 24 | ~1916 |
| Ralph Johnston | Head | — | 53 | ~1887 |
Census Appearances
1920
Otero, Colorado
Daughter, age 5
Otero, Colorado · implied b. ~1915 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Margaret K. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Iowa |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Otero, Colorado
Daughter, age 15
Otero, Colorado · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Margaret A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Otero-County, Colorado
Daughter, age 25
Otero-County, Colorado · implied b. ~1915 — 6 household members
| Surname | Johnston |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | La Junta City |
| 1935 Residence (County) | Otero |
| Income (1939) | 0 |
| Highest Grade | C 5 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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. Identified parents: mother Nellie Johnston (~0.92 confidence) and mother Nellie Johnston (~0.92 confidence) and father Ralph Johnston (~0.92 confidence) and mother Helen Johnston (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Nellie Johnston
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Nellie Johnston
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
Ralph Johnston
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Helen Johnston
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Johnston
Daughter · 1940 · age 25 · b. ~1915 · Colorado
★ You are viewing this record
Sibling
Sherwin Johnston
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Johnston
Sibling · 1940 · age 15
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 — Otero-County, Colorado
Open full size
1940 US Federal Census — Otero-County, Colorado
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00473-00246)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frances Conaway | 16 | Daughter | Library Project | Colorado |
| 2 | Patsy Conaway | 14 | Son | — | Colorado |
| 3 | Rollie L. White | 45 | Head | Proprietor | Missouri |
| 4 | Ruth White | 42 | Wife | — | Missouri |
| 5 | Esther White | 22 | Daughter | New Worker | Colorado |
| 6 | Wanda White | 12 | Daughter | — | Colorado |
| 7 | Roy W. Roach | 41 | Head | Proprietor | Colorado |
| 8 | Helen Roach | 38 | Wife | — | Missouri |
| 9 | Jack Dean Roach | 17 | Son | Clerk | Colorado |
| 10 | Betty Marie Roach | 15 | Daughter | — | Colorado |
| 11 | Willard A. Brown | 53 | Head | Conductor | Illinois |
| 12 | Hazel Brown | 45 | Wife | — | Kansas |
| 13 | Hazel Brown | 15 | Daughter | — | Kansas |
| 14 | William A. Marshall | 63 | Head | Refrigerating Engineer | Illinois |
| 15 | Mildred Marshall | 52 | Wife | — | Minnesota |
| 16 | William A. Jr. Marshall | 22 | Son | — | Colorado |
| 17 | Charles L. Bradshaw | 38 | Head | Electrician | Colorado |
| 18 | Helen Bradshaw | 29 | Wife | — | Nebraska |
| 19 | Robert Bradshaw | 6 | Son | — | Colorado |
| 20 | John E. Rice | 81 | Head | — | Virginia |
| 21 | Carrie Rice | 67 | Wife | — | Iowa |
| 22 | Louise Rice Dodds | 31 | Daughter | Teacher | Colorado |
| 23 | Robert W. Dodds | 3 | Grand-son | — | Colorado |
| 24 | Victor Albera | 82 | Head | — | Italy |
| 25 | Ida Albera | 73 | Wife | — | Missouri |
| 26 | Ralph S. Johnston | 53 | Head | Physician And Surgeon | Kansas |
| 27 | Nellie K. Johnston | 55 | Wife | — | Iowa |
| 28 | Margaret Johnston THIS PERSON | 25 | Daughter | — | Colorado |
| 29 | Sherwin S. Johnston | 24 | Son | — | Colorado |
| 30 | John Johnston | 15 | Son | — | Colorado |
| 31 | Anna Ebersole | 59 | — | House-Keeper | Nebraska |
| 32 | Preston E. Robinson | 47 | Head | Assistant Signal Supervisor | Kansas |
| 33 | Alberta Robinson | 46 | Wife | — | Illinois |
| 34 | Irvin J. Ling | 49 | Head | Wire Chief | Kansas |
| 35 | Mary Ling | 49 | Wife | — | Tennessee |
| 36 | Sara Ling | 15 | Daughter | — | New Mexico |
| 37 | Mildred Ling | 13 | Daughter | — | New Mexico |
| 38 | John H. Blake | 27 | Head | Wire Chief | Texas |
| 39 | Frieda Blake | 27 | Wife | — | Kansas |
Pedigree Summary
Margaret + 2 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)