DS
David Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this David Smith across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Joseph & Margaretta — first a head (b.~1913), then head of a 3-person household.
Age 27
b. ~1913
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Smith |
| Given Name | David S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Balto. City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Elevator operator |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 730 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Elevator Operator |
| Township / Ward | Balto City |
| Est. Birth Year | ~1913 |
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 David | Age | Birth yr |
|---|---|---|---|---|
| David Smith | Head | — | 27 | ~1913 |
| David Smith | Son | — | 2 | ~1938 |
| Sarah Smith | Spouse | — | 25 | ~1915 |
Census Appearances
1920
Baltimore, Maryland
Son, age 7
Baltimore, Maryland · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | David S |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Birth State | Maryland |
| Birth Country | United States |
| Year of Naturalization | yes |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 17
Baltimore, Maryland · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | David S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Maryland |
| Occupation | Shaping Club |
| Industry | Banners |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 27
Baltimore-City-County, Maryland · implied b. ~1913 — 3 household members
| Surname | Smith |
| Given Name | David S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Balto. City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Elevator operator |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 730 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| 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 David Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Smith (~0.92 confidence) and mother Margaretta Smith (~0.92 confidence) and mother Margaret Smith (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Smith
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Margaretta Smith
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Margaret Smith
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
David Smith
Head · 1940 · age 27 · b. ~1913 · 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-t0627-01525-00655)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lillie Alvey | 56 | sister | — | Maryland |
| 42 | Johanna J. Gann | 67 | Head | — | Ireland |
| 43 | Bridget Mary Gann | 60 | sister | — | Ireland |
| 44 | Mamie Lautenbach | 59 | Head | Cake Baker | Maryland |
| 45 | George Hertz | 27 | Head | Commercial Artist | Maryland |
| 46 | Elsie Hertz | 21 | wife | — | Maryland |
| 47 | Mary A. Ruth | 59 | Head | Saleslady | Maryland |
| 48 | Wharton Ruth | 38 | son | — | Maryland |
| 49 | Evelyn Ruth | 32 | daughter-in-law | Clerk | Maryland |
| 50 | Sterling Ruth | 8 | grandson | — | Maryland |
| 51 | Ella Jerome | 64 | Head | — | Maryland |
| 52 | Julia M. Jerome | 31 | daughter | Clinical Secretary | Maryland |
| 53 | James S. Zajic | 59 | Head | — | Maryland |
| 54 | Mary A. Zajic | 68 | wife | — | Maryland |
| 55 | Claudina Hasler | 57 | Head | — | Washington, D.C. |
| 56 | Kathryn Hasler | 32 | daughter | Stenographer | Washington, D.C. |
| 57 | Lilly Hogg | 69 | Head | — | Maryland |
| 58 | David S. Smith THIS PERSON | 27 | Head | Elevator Operator | Maryland |
| 59 | Sarah J. Smith | 25 | wife | — | Maryland |
| 60 | David S., Jr. Smith | 2 | son | — | Maryland |
| 61 | Joseph Birely | 23 | Head | Clerical | Maryland |
| 62 | Dolores Birely | 20 | wife | — | Maryland |
| 63 | Agnes Nagler | 38 | Head | Nurse | Maryland |
| 64 | Gordon Nagler | 14 | son | — | Maryland |
| 65 | Lois Nagler | 11 | daughter | — | Maryland |
| 66 | Harris Braffman | 70 | Head | — | Poland |
| 67 | Rosa Braffman | 70 | wife | — | Poland |
| 68 | Edward M. Kelly | 33 | Head | Manager | Maryland |
| 69 | Martha E. Kelly | 30 | wife | Operator | Maryland |
| 70 | Lillie Lehr | 71 | Head | — | Maryland |
| 71 | Seibert Laura Lehr | 45 | daughter | P.B.X. Operator | Maryland |
| 72 | Robert S. Kirk | 45 | Head | Painter | Maryland |
| 73 | Hazel H. Kirk | 36 | wife | Saleslady | Maryland |
| 74 | Robert S., Jr. Kirk | 19 | son | — | Maryland |
| 75 | Richard J. Kirk | 17 | son | — | New York |
| 76 | David Braffman | 43 | Head | Owner | Maryland |
| 77 | Hattie Braffman | 45 | wife | — | Maryland |
| 78 | Helene Braffman | 19 | daughter | Stenographer | Maryland |
| 79 | Mignon Braffman | 15 | daughter | — | Maryland |
| 80 | Angela Badalucco | 5 | daughter | — | Maryland |
Pedigree Summary
David
Gen 1 · 3 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)