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Elizabeth Armstrong — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Michigan
Our Model Tree links this Elizabeth Armstrong across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Michigan (XGBoost, ~Confirmed), with identified parents John & Thomas — first a daughter (b.~1915), then head of a 3-person household.
Age 25
b. ~1915
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Michigan |
| Surname | Armstrong |
| Given Name | Elizabeth M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Port Huron City |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Port Huron 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Elizabeth | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Armstrong | Spouse | — | 54 | ~1886 |
| John Armstrong | Head | — | 64 | ~1876 |
| Elizabeth Armstrong | Daughter | — | 25 | ~1915 |
Census Appearances
1920
St Clair, …
Daughter, age 4
St Clair, Michigan · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Eelberga |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Canada |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
St Clair, …
Daughter, age 15
St Clair, Michigan · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Elberna C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
St.-Clair-County, Michigan
Daughter, age 25
St.-Clair-County, Michigan · implied b. ~1915 — 3 household members
| Surname | Armstrong |
| Given Name | Elizabeth M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Port Huron City |
| 1935 Residence (County) | St. Clair |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Elizabeth Armstrong across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Armstrong (~0.92 confidence) and father Thomas Armstrong (~0.92 confidence) and father Thomas Armstrong (~0.92 confidence) and mother Carrie Armstrong (~0.92 confidence) and mother Elizabeth Armstrong (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Armstrong
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Thomas Armstrong
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Thomas Armstrong
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Carrie Armstrong
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Armstrong
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elizabeth Armstrong
Daughter · 1940 · age 25 · b. ~1915 · Michigan
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — St.-Clair-County, Michigan
Open full size
1940 US Federal Census — St.-Clair-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01816-00154)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marion E. Durst | 27 | Wife | — | Michigan |
| 2 | Marion E. Durst | 12 | Daughter | — | Michigan |
| 3 | Oscar E. Durst | 9 | Son | — | Michigan |
| 4 | Larry J. Durst | 0 | Son | — | Michigan |
| 5 | Sarah E. Hilton | 46 | Mother-in-law | — | Michigan |
| 6 | Clarence M. Spencer | 54 | Head | Pipe-Fitter | Michigan |
| 7 | Lulu M. Spencer | 54 | Wife | — | Michigan |
| 8 | Raymond A. Primeau | 20 | Step-Son | Doorman | Michigan |
| 9 | Edward E. Armstrong | 59 | Head | Carpenter | Michigan |
| 10 | Elizabeth J. Armstrong | 46 | Wife | — | Canada English |
| 11 | John T. Armstrong | 16 | Son | — | Michigan |
| 12 | Virginia M. Armstrong | 15 | Daughter | — | Michigan |
| 13 | Lucille E. Armstrong | 11 | Daughter | — | Michigan |
| 14 | Bernice Carson | 48 | Head | Sales-Lady | Michigan |
| 15 | Betty M. Carson | 23 | Daughter | Inspector | Michigan |
| 16 | Janet X. Carson | 23 | Daughter | Packer | Michigan |
| 17 | John G. Armstrong | 64 | Head | — | Michigan |
| 18 | Elizabeth D. Armstrong | 54 | Wife | — | Canada English |
| 19 | Elizabeth M. Armstrong THIS PERSON | 25 | Daughter | — | Michigan |
| 20 | John V. O'Sullivan | 63 | Head | Printer | Michigan |
| 21 | Ann O'Sullivan | 63 | Wife | — | Michigan |
| 22 | John C. O'Sullivan | 21 | Son | Packing | Michigan |
| 23 | Frank J. Popplewell | 65 | Head | — | Michigan |
| 24 | Mamie M. Popplewell | 66 | Wife | — | Canada English |
| 25 | Gustav Mack | 70 | Head | Janitor | Germany |
| 26 | Anna L. Mack | 60 | Wife | Housework | Illinois |
| 27 | Freddie A. Mack | 20 | Son | Carpenter | Iowa |
| 28 | Theresa A. Agar | 35 | Head | — | Michigan |
| 29 | Theresa Ann Agar | 11 | Daughter | — | Michigan |
| 30 | Thomas N. Agar | 10 | Son | — | Michigan |
| 31 | Thelma M. Agar | 8 | Daughter | — | Michigan |
| 32 | Doris R. Agar | 6 | Daughter | — | Michigan |
| 33 | Roy W. Parker | 31 | Head | Foreman (Sheet Metal) | Michigan |
| 34 | Thelma J. Parker | 31 | Wife | — | Michigan |
| 35 | Donald L. Parker | 5 | Son | — | Michigan |
| 36 | Harold W. Parker | 3 | Son | — | Michigan |
| 37 | Robert G. Parker | 1 | Son | — | Michigan |
| 38 | Herbert J. Sophia | 45 | Head | Meter Installer | Michigan |
| 39 | Mary E. Sophia | 46 | Wife | — | Michigan |
| 40 | Bartholomew G. Sophia | 21 | Son | Laborer | Michigan |
Search for Elizabeth Armstrong
All Elizabeth Armstrong Census Records Discover Armstrong Family TreePedigree Summary
Elizabeth
Gen 1 · 5 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)