CA
Charles Armstrong — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this Charles Armstrong across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed), with identified parents William & Lillian — first a head (b.~1903), then head of a 4-person household.
Age 37
b. ~1903
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Armstrong |
| Given Name | Charles |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Howard |
| Additional Details | |
| Occupation | Plumber Helper |
| Industry | Plumbing Contractor |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | No 5 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Plumber Helper |
| Township / Ward | Elkridge |
| Est. Birth Year | ~1903 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Charles | Age | Birth yr |
|---|---|---|---|---|
| Louisa Armstrong | Spouse | — | 37 | ~1903 |
| Joan Armstrong | Daughter | — | 2 | ~1938 |
| William Armstrong | Son | — | 13 | ~1927 |
| Charles Armstrong | Head | — | 37 | ~1903 |
Census Appearances
1920
Howard, Maryland
Son, age 17
Howard, Maryland · implied b. ~1903 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Charles H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Mach. Helper |
| Industry | Master Garage |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Howard, Maryland
Head, age 27
Howard, Maryland · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Charles |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 20 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Foreman |
| Industry | Broom Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Head, age 37
Baltimore-County, Maryland · implied b. ~1903 — 4 household members
| Surname | Armstrong |
| Given Name | Charles |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Howard |
| Occupation | Plumber Helper |
| Industry | Plumbing Contractor |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | No 5 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Charles Armstrong across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Armstrong (~0.92 confidence) and mother Lillian Armstrong (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Armstrong
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Lillian Armstrong
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charles Armstrong
Head · 1940 · age 37 · b. ~1903 · 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-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01503-00297)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John F Vogt | 22 | son | Automobile Engineer | Maryland |
| 2 | George B Vogt | 20 | son | — | Maryland |
| 3 | George M Richter | 77 | father-in-law | Carpenter | Maryland |
| 4 | Mary C Campbell | 67 | Head | — | Maryland |
| 5 | John J Campbell | 31 | son | Office Clerk | Maryland |
| 6 | Raymond Belt | 25 | lodger | — | Maryland |
| 7 | Lillie G Armstrong | 57 | Head | — | Maryland |
| 8 | William Armstrong | 31 | son | Plumber | Maryland |
| 9 | Edna Armstrong | 19 | daughter | — | Maryland |
| 10 | Mary G Armstrong | 10 | granddaughter | — | Maryland |
| 11 | Oliver Graves | 47 | son-in-law | Foreman | Maryland |
| 12 | Edna Graves | 38 | daughter | — | Maryland |
| 13 | Betty Graves | 13 | granddaughter | — | Maryland |
| 14 | Charles Armstrong THIS PERSON | 37 | Head | Plumber Helper | Maryland |
| 15 | Louisa Armstrong | 37 | Wife | — | Maryland |
| 16 | William E Armstrong | 13 | son | — | Maryland |
| 17 | Joan E Armstrong | 2 | daughter | — | Maryland |
| 18 | George Benkert | 66 | Head | Proprietor | Germany |
| 19 | Anna Benkert | 59 | Wife | — | Bavaria |
| 20 | Joseph Smith | 35 | son-in-law | Pharmacist | Maryland |
| 21 | Barbara Smith | 32 | daughter | — | Maryland |
| 22 | Joseph Smith | 2 | grandson | — | Maryland |
| 23 | Walter Russell | 65 | Head | Operator | New Hampshire |
| 24 | Mamie Russell | 51 | Wife | Nurse | West Virginia |
| 25 | James Hawke | 82 | father-in-law | — | West Virginia |
| 26 | Elizabeth Hawke | 75 | mother-in-law | — | West Virginia |
| 27 | Wilda Hawke | 29 | sister-in-law | Stenographer | Maryland |
| 28 | Daisy Potts | 38 | Head | Spinner | West Virginia |
| 29 | Mary E Potts | 68 | mother | — | West Virginia |
| 30 | William Lowrey | 62 | Head | Ice Man | Maryland |
| 31 | Mildred Lowrey | 58 | Wife | — | Maryland |
| 32 | Beatrice Lowrey | 17 | daughter | — | Maryland |
| 33 | Berkley Lowrey | 15 | son | — | Maryland |
| 34 | Doris Lowrey | 14 | daughter | — | Maryland |
| 35 | Aubert Mullinaud | 31 | son-in-law | Shipping Dept | Maryland |
| 36 | Marian Mullinaud | 23 | daughter | — | Maryland |
| 37 | Nancy Mullinaud | 4 | daughter | — | Maryland |
| 38 | George Alcorn | 36 | lodger | Chauffeur | Maryland |
| 39 | Ira Dutton | 55 | Head | Machinist | West Virginia |
| 40 | Bessie Dutton | 54 | Wife | — | West Virginia |
Pedigree Summary
Charles
Gen 1 · 2 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)