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Mary Armstrong — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Alabama
Our Model Tree links this Mary Armstrong across the 1910, 1920, 1930 and 1940 US Censuses in Jefferson-County, Alabama (XGBoost, ~Confirmed) — first a spouse (b.~1878), then head of a 17-person household.
Age 62
b. ~1878
Female
Spouse
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Alabama |
| Surname | Armstrong |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Fairfield City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same Place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Fairfield 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.
17 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Rosa Parker | Daughter | — | 25 | ~1915 |
| Ira Roberts | Daughter | — | 30 | ~1910 |
| Waveria Armstrong | Daughter | — | 20 | ~1920 |
| James Armstrong | Head | — | 66 | ~1874 |
| Jesse Mcdonell | Other | — | 8 | ~1932 |
| Freddie Parker | Other | — | 4 | ~1936 |
| Doris Norwood | Other | — | 13 | ~1927 |
| Geta Parker | Other | — | 5 | ~1935 |
| Millard Alexander | Other | — | 24 | ~1916 |
| Jannie Alexander | Other | — | 18 | ~1922 |
| John Alexander | Other | — | 35 | ~1905 |
| May Mcdonell | Other | — | 11 | ~1929 |
| Ed Armstrong | Son | — | 23 | ~1917 |
| Jimmie Armstrong | Son | — | 28 | ~1912 |
| Milton Armstrong | Son | — | 24 | ~1916 |
| Charles Armstrong | Son | — | 19 | ~1921 |
| Mary Armstrong | Spouse | — | 62 | ~1878 |
Census Appearances
1910
Jefferson, Alabama
Spouse, age 29
Jefferson, Alabama · implied b. ~1881 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Maggie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Alabama |
| Years Married | 10 |
| Children Born | 5 |
| Children Living | 2 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1920
Jefferson, Alabama
Spouse, age 40
Jefferson, Alabama · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Salesman |
| Industry | Wholesale Grocery |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Jefferson, Alabama
Spouse, age 50
Jefferson, Alabama · implied b. ~1880 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Mary L |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Alabama |
| Age at First Marriage | 19 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Jefferson-County, Alabama
Spouse, age 62
Jefferson-County, Alabama · implied b. ~1878 — 17 household members
| Surname | Armstrong |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Fairfield City |
| 1935 Residence (County) | Jefferson |
| Class of Worker | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same Place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Armstrong
Spouse · 1940 · age 62 · b. ~1878 · Alabama
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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 — Jefferson-County, Alabama
Open full size
1940 US Federal Census — Jefferson-County, Alabama
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00047-00253)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elgina Washington | 7 | Daughter | — | Alabama |
| 2 | John C Washington | 5 | Son | — | Alabama |
| 4 | John Evans | 48 | Head | Machine Driller | Alabama |
| 5 | Sadie Evans | 43 | Wife | — | Alabama |
| 6 | James Tolvert | 37 | Son-in-law | Iron Opener | Alabama |
| 7 | Mildred Tolvert | 27 | Daughter | General Houseworker | Alabama |
| 8 | Julius Tolvert | 12 | Son | — | Alabama |
| 9 | Joseph Brown | 44 | Head | Laborer | Alabama |
| 10 | Viola Brown | 38 | Wife | — | Alabama |
| 11 | Ernestine Brown | 21 | Daughter | — | Alabama |
| 12 | Ulysses Brown | 22 | Brother | Bell Boy | Alabama |
| 13 | Cecil Coker | 43 | Lodger | Bell Boy | Alabama |
| 14 | James Armstrong | 66 | Head | Sweeper | Alabama |
| 15 | Mary L. Armstrong THIS PERSON | 62 | Wife | — | Alabama |
| 16 | Jimmie Armstrong | 28 | Son | Laborer | Alabama |
| 17 | Milton Armstrong | 24 | Son | Laborer | Alabama |
| 18 | Ed Armstrong | 23 | Son | Laborer | Alabama |
| 19 | Waveria Armstrong | 20 | Daughter | — | Alabama |
| 20 | Charles Armstrong | 19 | Son | — | Alabama |
| 21 | Ira Mae Roberts | 30 | Daughter | General Houseworker | Alabama |
| 22 | Rosa M. Parker | 25 | Daughter | General Houseworker | Alabama |
| 23 | Geta Parker | 5 | Granddaughter | — | Alabama |
| 24 | Freddie Parker | 4 | Grandson | — | Alabama |
| 25 | John Alexander | 35 | Step-son | Bricklayer | Alabama |
| 26 | Millard Alexander | 24 | Step-son | Bricklayer Helper | Alabama |
| 27 | Jannie Alexander | 18 | Step-daughter | — | Alabama |
| 28 | May F. Mcdonell | 11 | Step-daughter | — | Alabama |
| 29 | Jesse Mcdonell | 8 | Step-son | — | Alabama |
| 30 | Doris Norwood | 13 | Niece | — | Alabama |
| 31 | Mary Pigner | 54 | Head | Carpenter Driver | Alabama |
| 32 | William Hunter | 30 | Son | Roll Man Helper | Alabama |
| 33 | Monroe Goodson | 53 | Lodger | Laborer | South Carolina |
| 34 | Mason Moody | 45 | Head | Laborer | Mississippi |
| 35 | Francis Moody | 75 | Mother | — | Mississippi |
| 36 | Lily M Boyd | 24 | Niece | Maid | Alabama |
| 37 | Francis Drake | 4 | Niece | — | Alabama |
| 38 | Ludie Palmer | 24 | Head | Laborer | Alabama |
| 39 | Irene Palmer | 20 | Wife | — | Alabama |
| 40 | Lee Alexander | 60 | Head | Blocker | Alabama |
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)