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Jacob Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Jacob Smith across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents John & Elizabeth — first a head (b.~1909), then head of a 6-person household.
Age 31
b. ~1909
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Smith |
| Given Name | Jacob R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | carpenter |
| Industry | building construction |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 1625 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Carpenter |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1909 |
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 Jacob | Age | Birth yr |
|---|---|---|---|---|
| Lois Smith | Daughter | — | 11 | ~1929 |
| Thelma Smith | Daughter | — | 12 | ~1928 |
| Aileen Smith | Daughter | — | 3 | ~1937 |
| Jacob Smith | Head | — | 31 | ~1909 |
| Jack Smith | Son | — | 8 | ~1932 |
| Thelma Smith | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Baltimore, Maryland
Son, age 12
Baltimore, Maryland · implied b. ~1908 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Jacob R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 22
Baltimore, Maryland · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Jacob R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 19 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Carpenter |
| Industry | Hardwood Floor |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 13 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 31
Baltimore-City-County, Maryland · implied b. ~1909 — 6 household members
| Surname | Smith |
| Given Name | Jacob R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Occupation | carpenter |
| Industry | building construction |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 1625 |
| Highest Grade | No 8 |
| 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 Jacob Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Smith (~0.92 confidence) and mother Elizabeth Smith (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Smith
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Smith
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Jacob Smith
Head · 1940 · age 31 · b. ~1909 · 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-t0627-01514-00313)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Howard, L. Wilson | 12 | Son | — | Maryland |
| 42 | Shirley E. Wilson | 10 | Daughter | — | Maryland |
| 43 | Nancy M. Wilson | 5 | Daughter | — | Maryland |
| 44 | Anna D. Rosenberger | 54 | Head | — | Maryland |
| 45 | Elmer E. Rosenberger | 23 | Son | Clerk | Maryland |
| 46 | James Rosenberger | 19 | Son | Clerk | Maryland |
| 47 | Frank Swindell | 48 | Brother | Helper | Maryland |
| 48 | Edward Ernst | 25 | Head | Pressman | Maryland |
| 49 | Katharine D. Ernst | 23 | Wife | — | Maryland |
| 50 | Nancy Ernst | 3 | Daughter | — | Maryland |
| 51 | Jacob R. Smith THIS PERSON | 31 | Head | Carpenter | Maryland |
| 52 | Thelma D. Smith | 31 | Wife | — | Maryland |
| 53 | Thelma Smith | 12 | Daughter | — | Maryland |
| 54 | Lois Smith | 11 | Daughter | — | Maryland |
| 55 | Jack Smith | 8 | Son | — | Maryland |
| 56 | Aileen Smith | 3 | Daughter | — | Maryland |
| 57 | Walter L. Pink | 45 | Head | Painter | Maryland |
| 58 | Emily G. Pink | 41 | Wife | — | Maryland |
| 59 | Geraldine Pink | 20 | Daughter | Saleslady | Maryland |
| 60 | Walter Jr. Pink | 13 | Son | — | Maryland |
| 61 | Joseph P. Carroll | 57 | Head | Laborer | New York |
| 62 | Carrie L. Carroll | 50 | Wife | — | Maryland |
| 63 | Joseph M. Carroll | 22 | Son | Truck Driver | Maryland |
| 64 | Mary Carroll | 21 | Daughter | Cashier | New York |
| 65 | Harry Carroll | 19 | Son | Utility Man | Maryland |
| 66 | Helen Carroll | 17 | Daughter | — | Maryland |
| 67 | Doris Carroll | 15 | Daughter | — | Maryland |
| 68 | Henry F. Schmitker | 49 | Head | Machinist | Maryland |
| 69 | Barbara Schmitker | 46 | Wife | — | Maryland |
| 70 | Melvin Schmitker | 14 | Son | — | Maryland |
| 71 | Doris Schmitker | 6 | Daughter | — | Maryland |
| 72 | John Keras | 38 | Brother-in-law | Shipping Dept. | Maryland |
| 73 | Alice Gonce | 45 | Head | — | Maryland |
| 74 | Lloyd Luttempler | 33 | Head | Cook | Maryland |
| 75 | Dorothy Luttempler | 27 | Wife | — | Maryland |
| 76 | Shirley Luttempler | 1 | Daughter | — | Maryland |
| 77 | Austin J. Sr. Healy | 25 | Head | Pipe Fitter Helper | Maryland |
| 78 | Ruth D. Healy | 22 | Wife | — | Maryland |
| 79 | Henry A. Redwitch | 63 | Head | — | Maryland |
| 80 | Mae D. Redwitch | 49 | Wife | — | Maryland |
Pedigree Summary
Jacob
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)