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Jacob Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Butler-County, Ohio
Our Model Tree links this Jacob Smith across the 1910, 1920, 1930 and 1940 US Censuses in Butler-County, Ohio (XGBoost, ~Confirmed), with identified parents Adam & Adam — first a son (b.~1896), then head of a 5-person household.
Age 44
b. ~1896
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Butler-County, Ohio |
| Surname | Smith |
| Given Name | Jacob |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Hanover Township |
| 1935 Residence (County) | Butler |
| Additional Details | |
| Occupation | Farm operator |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Farm Operator |
| Township / Ward | Hanover Township |
| Est. Birth Year | ~1896 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jacob | Age | Birth yr |
|---|---|---|---|---|
| Edna Smith | Daughter | — | 49 | ~1891 |
| Margaret Smith | Head | — | 74 | ~1866 |
| Alfred Mcvicker | Other | — | 63 | ~1877 |
| Jacob Smith | Son | — | 44 | ~1896 |
| Harry Smith | Son | — | 34 | ~1906 |
Census Appearances
1910
Butler, Ohio
Son, age 13
Butler, Ohio · implied b. ~1897 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Jacob |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1920
Butler, Ohio
Son, age 24
Butler, Ohio · implied b. ~1896 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Jacob S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Butler, Ohio
Son, age 34
Butler, Ohio · implied b. ~1896 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Jacob E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Ohio |
| Age at First Marriage | 34 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Butler-County, Ohio
Son, age 44
Butler-County, Ohio · implied b. ~1896 — 5 household members
| Surname | Smith |
| Given Name | Jacob |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Hanover Township |
| 1935 Residence (County) | Butler |
| Occupation | Farm operator |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Adam Smith (~0.92 confidence) and father Adam Smith (~0.92 confidence) and mother Maggie Smith (~0.92 confidence) and mother Margaret Smith (~0.92 confidence) and mother Margaret Smith (~0.92 confidence) and mother Margaret Smith (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Adam Smith
b. ~1857
Source father
● Household
· direct · ~0.92
Father
Adam Smith
b. ~1859
Source father
● Household
· direct · ~0.92
Mother
Maggie Smith
b. ~1864
Source mother
● Household
· direct · ~0.92
Mother
Margaret Smith
b. ~1866
Source mother
● Household
· direct · ~0.92
Mother
Margaret Smith
b. ~1866
Source mother
● Household
· direct · ~0.92
Mother
Margaret Smith
b. ~1867
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Jacob Smith
Son · 1940 · age 44 · b. ~1896 · Ohio
★ You are viewing this record
Sibling
Harry Smith
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Smith
Sibling · 1940 · age 49
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Butler-County, Ohio
Open full size
1940 US Federal Census — Butler-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03034-00059)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Klapper | 60 | Wife | — | Ohio |
| 42 | Russell Henderson | 17 | Boarder | — | Ohio |
| 43 | James Lincher | 40 | Head | Finisher | Kentucky |
| 44 | Mary Lincher | 41 | Wife | — | Kentucky |
| 45 | Edward Lincher | 15 | Son | — | Ohio |
| 46 | Joann Lincher | 14 | Daughter | — | Ohio |
| 47 | Jack Lincher | 13 | Son | — | Ohio |
| 48 | Loraine Lincher | 11 | Daughter | — | Ohio |
| 49 | Dale Lincher | 7 | Son | — | Ohio |
| 50 | Margaret Smith | 74 | Head | — | Ohio |
| 51 | Edna Smith | 49 | Daughter | — | Ohio |
| 52 | Jacob Smith THIS PERSON | 44 | Son | Farm Operator | Ohio |
| 53 | Harry Smith | 34 | Son | Pharmacist | Ohio |
| 54 | Alfred Mcvicker | 63 | Boarder | — | Ohio |
| 55 | George J. Smith | 43 | Head | Farm Operator | Ohio |
| 56 | Zelma E. Smith | 37 | Wife | — | Ohio |
| 57 | Richard S. Smith | 15 | Son | — | Ohio |
| 58 | Matthew Meyer | 39 | Head | Farm Operator | Ohio |
| 59 | Alma Meyer | 40 | Wife | — | Ohio |
| 60 | Chester Ross Meyer | 19 | Son | — | Ohio |
| 61 | William Weber | 62 | Head | Farm Operator | Ohio |
| 62 | Elizabeth Weber | 52 | Wife | — | Ohio |
| 63 | Howard Weber | 26 | Son | Beater Room | Ohio |
| 64 | Francis Weber | 25 | Son | — | Ohio |
| 65 | Joseph Fey | 81 | Boarder | — | Indiana |
| 66 | Herschel Neal | 24 | Hired Hand | Hired Laborer | Kentucky |
| 67 | Joseph Scholz | 42 | Head | Cement Finisher | Ohio |
| 68 | Cyrilla Scholz | 41 | Wife | — | Indiana |
| 69 | Karl Scholz | 17 | Son | — | Ohio |
| 70 | Russell Scholz | 16 | Son | — | Ohio |
| 71 | Jack Scholz | 14 | Son | — | Ohio |
| 72 | Robert Scholz | 12 | Son | — | Ohio |
| 73 | Joetta Scholz | 8 | Daughter | — | Ohio |
| 74 | Marilyn Scholz | 3 | Daughter | — | Ohio |
| 75 | Eugene Scholz | 1 | Son | — | Ohio |
| 76 | Joseph J. Ray | 79 | Head | Farm Operator | Ohio |
| 77 | Martha N. Ray | 59 | Wife | — | Ohio |
| 78 | Flora D. Ray | 42 | Daughter | — | Ohio |
| 79 | Jesse Pierson | 58 | Head | Farm Operator | Ohio |
| 80 | Dora Pierson | 50 | Wife | — | Ohio |
Pedigree Summary
Jacob + 2 siblings
Gen 1 · 6 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)