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Mary Armstrong — 1920 US Census Record
Linked across censuses1920 United States Federal Census · St Louis, Minnesota
Our Model Tree links this Mary Armstrong across the 1920, 1930 and 1940 US Censuses in St Louis, Minnesota (XGBoost, ~Confirmed) — first a spouse (b.~1873), then head of a 5-person household.
Age 47
b. ~1873
Female
Spouse
Born: Wisconsin
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | St Louis, Minnesota |
| Surname | Armstrong |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Father's Birthplace | Germany |
| Mother's Birthplace | Canada |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Duluth City |
| Est. Birth Year | ~1873 |
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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Armstrong | Daughter | — | 22 | ~1898 |
| Anita Armstrong | Daughter | — | 20 | ~1900 |
| Augustus Armstrong | Head | — | 49 | ~1871 |
| Hanne Benson | Other | — | 34 | ~1886 |
| Mary Armstrong | Spouse | — | 47 | ~1873 |
Census Appearances
1920
St Louis, …
Spouse, age 47
St Louis, Minnesota · implied b. ~1873 — 5 household members
| Surname | Armstrong |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Father's Birthplace | Germany |
| Mother's Birthplace | Canada |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
St Louis, …
Spouse, age 56
St Louis, Minnesota · implied b. ~1874 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Mayme E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Age at First Marriage | 23 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Canada English |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
St.-Louis-County, Minnesota
Spouse, age 67
St.-Louis-County, Minnesota · implied b. ~1873 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Mamie L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | CITY OF DULUTH |
| 1935 Residence (County) | ST. LOUIS |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Mary Armstrong across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Armstrong
Spouse · 1920 · age 47 · b. ~1873 · Minnesota
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — St Louis, Minnesota
Open full size
1920 US Federal Census — St Louis, Minnesota
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu859unit:0615)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Albertina | 27 | Sister | Clerk | Sweden |
| 52 | Albert | 24 | Brother | Machinist | Sweden |
| 53 | Gustaf O Wickman | 62 | Head | Boilermaker | Sweden |
| 54 | Anna O Wickman | 53 | Wife | — | Sweden |
| 55 | Joshua Bernstein | 31 | Head | Merchant | Russia |
| 56 | Rose Bernstein | 28 | Wife | — | Minnesota |
| 57 | Henrietta Bernstein | 6 | Daughter | — | Minnesota |
| 58 | Mildred Bernstein | 2 | Daughter | — | Minnesota |
| 59 | Alexander L Macintosh | 50 | Head | Carpenter | Canada |
| 60 | Sara Macintosh | 49 | Wife | — | Maine |
| 61 | Fred S Scott | 37 | Head | Machinist | New York |
| 62 | Alice Scott | 34 | Wife | — | Michigan |
| 63 | Frederick C Scott | 6 | Son | — | Michigan |
| 64 | Velma Scott | 5 | Daughter | — | Minnesota |
| 65 | Mary E Scott | 3 | Daughter | — | Minnesota |
| 66 | Alice J Scott | 1 | Daughter | — | Minnesota |
| 67 | George W Poulson | 38 | Head | Foreman | Michigan |
| 68 | Mary Poulson | 38 | Wife | — | Michigan |
| 69 | Dorothy Poulson | 17 | Daughter | — | Minnesota |
| 70 | John S Poulson | 9 | Son | — | Minnesota |
| 71 | Frederick W Poulson | 6 | Son | — | Minnesota |
| 72 | Edgar J Roberts | 35 | Head | Teamster | Minnesota |
| 73 | Minnie V Roberts | 24 | Wife | — | Minnesota |
| 74 | Eleanora B Roberts | 3 | Daughter | — | Minnesota |
| 75 | Lawrence E Hamilton | 45 | Head | Watchman | New York |
| 76 | Ida Hamilton | 39 | Wife | — | Minnesota |
| 77 | Eleanor F Hamilton | 15 | Daughter | — | Minnesota |
| 78 | Charles S Hamilton | 13 | Son | — | Minnesota |
| 79 | William D Hamilton | 10 | Daughter | — | Minnesota |
| 80 | James S Hamilton | 6 | Daughter | — | Minnesota |
| 81 | Priscilla G Hamilton | 4 | Daughter | — | Minnesota |
| 82 | Adolf J Giger | 61 | Head | Baker | Wisconsin |
| 83 | Ida G Giger | 51 | Wife | — | Iowa |
| 84 | Mary E Giger | 26 | Daughter | Stenographer | Minnesota |
| 85 | Adolf Giger | 24 | Son | Info Clerk | Minnesota |
| 86 | Eleanor H Giger | 19 | Daughter | Stenographer | Minnesota |
| 87 | Herbert L Giger | 16 | Son | — | Wisconsin |
| 88 | Lee Baldwin | 60 | Head | Longshoreman | Canada |
| 89 | Margaret Baldwin | 50 | Wife | — | Canada |
| 90 | Rose A Baldwin | 22 | Daughter | Musician | Michigan |
| 91 | William H Baldwin | 21 | Son | Musician | Michigan |
| 92 | John A Baldwin | 20 | Son | Musician | Michigan |
| 93 | Irene J Baldwin | 23 | Daughter-in-law | Cashier | Minnesota |
| 94 | Robert J Baldwin | 14 | Son | — | Minnesota |
| 95 | Augustus R Armstrong | 49 | Head | Mail Carrier | Canada |
| 96 | Mary E Armstrong THIS PERSON | 47 | Wife | — | Wisconsin |
| 97 | Margaret H Armstrong | 22 | Daughter | Teacher | Wisconsin |
| 98 | Anita M Armstrong | 20 | Daughter | Teacher | Minnesota |
| 99 | Hanne L Benson | 34 | Boarder | Helper | Wisconsin |
| 100 | James Doran | 62 | Head | Blacksmith | Michigan |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)