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John Armstrong — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Armstrong across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents John — first a head (b.~1887), then head of a 6-person household.
Age 53
b. ~1887
Male
Head
Born: Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Armstrong |
| Given Name | John R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Automobile laborer |
| Industry | Garage |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 602 |
| Highest Grade | 3 |
| 1935 Residence | Same house |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Automobile Laborer |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1887 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Rosalee Armstrong | Daughter | — | 2 | ~1938 |
| Isabel Armstrong | Daughter | — | 15 | ~1925 |
| John Armstrong | Head | — | 53 | ~1887 |
| Vincent Armstrong | Son | — | 17 | ~1923 |
| Eugene Armstrong | Son | — | 10 | ~1930 |
| Carrie Armstrong | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Baltimore, Maryland
Son, age 31
Baltimore, Maryland · implied b. ~1889 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | John S Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | South Carolina |
| Occupation | American Consul |
| Industry | At Venice |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
Baltimore, Maryland
Head, age 43
Baltimore, Maryland · implied b. ~1887 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 24 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 16 |
| Veteran | No |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Baltimore-City-County, Maryland
Head, age 53
Baltimore-City-County, Maryland · implied b. ~1887 — 6 household members
| Surname | Armstrong |
| Given Name | John R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Occupation | Automobile laborer |
| Industry | Garage |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 602 |
| Highest Grade | 3 |
| 1935 Residence | Same house |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 John Armstrong across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother John Armstrong (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
John Armstrong
b. ~1859
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Armstrong
Head · 1940 · age 53 · b. ~1887 · Maryland
★ 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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01536-00115)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Annabelle Simpson | 28 | Wife | — | North Carolina |
| 2 | Crawley Jr. Simpson | 11 | Son | — | Maryland |
| 3 | Marvin S. Simpson | 6 | Son | — | Maryland |
| 4 | Billy R. Simpson | 3 | Son | — | Maryland |
| 5 | Robert L. Simpson | 0 | Son | — | Maryland |
| 6 | Victor O. Sands | 29 | Head | Truck Driver | Maryland |
| 7 | Mildred A. Sands | 27 | Wife | — | Virginia |
| 8 | Charles F. Sands | 5 | Son | — | Maryland |
| 9 | John R. Armstrong | 22 | Head | Truck Helper | Virginia |
| 10 | Helen R. Armstrong | 19 | Wife | — | Maryland |
| 11 | John R. Armstrong THIS PERSON | 53 | Head | Automobile Laborer | Virginia |
| 12 | Carrie E. Armstrong | 48 | Wife | — | Virginia |
| 13 | Vincent G. Armstrong | 17 | Son | Kitchen Helper | Maryland |
| 14 | Isabel L. Armstrong | 15 | Daughter | — | Virginia |
| 15 | Eugene F. Armstrong | 10 | Son | — | Maryland |
| 16 | Rosalee F. Armstrong | 2 | Daughter | — | Maryland |
| 17 | Anna Harris | 70 | Head | — | Maryland |
| 18 | Jerome Harris | 37 | Son | Grind Off | Maryland |
| 19 | Willard Houston | 47 | Nephew | — | Maryland |
| 20 | John W. Hilliard | 51 | Boarder | Brick Laborer | Maryland |
| 21 | Charles R. Justus | 55 | Head | Attendant | Maryland |
| 22 | Hattie M. Justus | 50 | Wife | — | Maryland |
| 23 | George Justus | 19 | Son | Chauffeur | Maryland |
| 24 | Steven Warren | 62 | Boarder | Engineer | Pennsylvania |
| 25 | Frank J. Morton | 30 | Head | Ice Puller | Pennsylvania |
| 26 | Carrie L. Morton | 25 | Wife | — | Virginia |
| 27 | June D. Morton | 7 | Daughter | — | Maryland |
| 28 | William O. Thompson | 36 | Head | Window Cleaner | Georgia |
| 29 | Marie R. Thompson | 36 | Wife | — | Maryland |
| 30 | Lawrence E. Thompson | 15 | Son | — | Georgia |
| 31 | William E. Thompson | 12 | Son | — | Georgia |
| 32 | Edmond Smolders | 47 | Head | Butcher | Belgium |
| 33 | Rachel Smolders | 47 | Wife | — | Belgium |
| 34 | Marcel S. Smolders | 23 | Daughter | Bottle Packer | Maryland |
| 35 | Louise M. Smolders | 22 | Daughter | Bottle Packer | Maryland |
| 36 | Margaret D. Smolders | 18 | Daughter | Bottle Packer | Maryland |
| 37 | Dorothy A. Smolders | 17 | Daughter | — | Maryland |
| 38 | Sylvia M. Smolders | 13 | Daughter | — | Maryland |
| 39 | Rachel M. Smolders | 12 | Daughter | — | Maryland |
| 40 | Edmond A. Smolders | 7 | Son | — | Maryland |
Pedigree Summary
John
Gen 1 · 1 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)