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Elmer Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Seminole-County, Florida
Our Model Tree links this Elmer Johnson across the 1920, 1930 and 1940 US Censuses in Seminole-County, Florida (XGBoost, ~Confirmed), with identified parents John & Victor — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Florida
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Seminole-County, Florida |
| Surname | Johnson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Sanford City |
| 1935 Residence (County) | Seminole |
| Additional Details | |
| Occupation | Water tender |
| Industry | Electric Power Plant |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 810 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Water Tender |
| Township / Ward | Sanford City |
| Est. Birth Year | ~1917 |
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 Elmer | Age | Birth yr |
|---|---|---|---|---|
| Alice Johnson | Daughter | — | 19 | ~1921 |
| John Johnson | Head | — | 59 | ~1881 |
| Elmer Johnson | Son | — | 23 | ~1917 |
| Katherine Johnson | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Seminole, Florida
Son, age 3
Seminole, Florida · implied b. ~1917 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Elmer H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Finland |
| Mother's Birthplace | Florida |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Seminole, Florida
Son, age 13
Seminole, Florida · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Elmer H. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Finland |
| Mother's Birthplace | Florida |
| Occupation | none |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Seminole-County, Florida
Son, age 23
Seminole-County, Florida · implied b. ~1917 — 4 household members
| Surname | Johnson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Sanford City |
| 1935 Residence (County) | Seminole |
| Occupation | Water tender |
| Industry | Electric Power Plant |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 810 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
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 Elmer Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Johnson (~0.92 confidence) and father Victor Johnson (~0.92 confidence) and father John Johnson (~0.92 confidence) and mother Annie Johnson (~0.92 confidence) and mother Hattie Johnson (~0.92 confidence) and mother Katherine Johnson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Johnson
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Victor Johnson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
John Johnson
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Annie Johnson
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Hattie Johnson
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Katherine Johnson
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elmer Johnson
Son · 1940 · age 23 · b. ~1917 · Florida
★ You are viewing this record
Sibling
Alice Johnson
Sibling · 1940 · age 19
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 — Seminole-County, Florida
Open full size
1940 US Federal Census — Seminole-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00617-00521)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marshall Willis | 41 | Head | Clerk | Florida |
| 2 | Rebecca D. Willis | 31 | Wife | — | Georgia |
| 3 | Marshall C. Jr. Willis | 0 | Son | — | Florida |
| 4 | Robert E. Purdy | 47 | Head | Conductor | Georgia |
| 5 | Anna Purdy | 44 | Wife | — | Indiana |
| 6 | Lawrence Smith | 32 | Head | Checker | Florida |
| 7 | Sarah Smith | 21 | Wife | — | Florida |
| 8 | Lawrence Smith | 2 | Son | — | Florida |
| 9 | E. Vernon Harvey | 50 | Head | Carpenter | Kentucky |
| 10 | Minnie Harvey | 21 | Wife | — | Kentucky |
| 11 | Savill Harvey | 18 | Son | — | Kentucky |
| 12 | Russell Harvey | 17 | Son | — | Florida |
| 13 | Elworth Harvey | 15 | Son | — | Florida |
| 14 | Everett Harvey | 10 | Son | — | Florida |
| 15 | James Dyhard | 76 | Head | — | South Carolina |
| 16 | Mercie Dyhard | 71 | Wife | — | Georgia |
| 17 | Saisom Reinhart | 54 | Head | Plumber | Florida |
| 18 | Mary Reinhart | 48 | Wife | — | Georgia |
| 19 | Wilma Reinhart | 18 | Daughter | Bookkeeper | Florida |
| 20 | Odeal Crosby | 70 | Head | — | New York |
| 21 | Clarence Welch | 39 | Son-in-law | Proprietor | Michigan |
| 22 | Vivian Welch | 36 | Daughter | — | Pennsylvania |
| 23 | Claude Bradley | 53 | Head | Fireman | Florida |
| 24 | Florence Bradley | 40 | Wife | — | Florida |
| 25 | Harry Bradley | 14 | Son | — | Florida |
| 26 | John Johnson | 59 | Head | Carpenter | Sweden |
| 27 | Katherine Johnson | 46 | Wife | Clerk | Florida |
| 28 | Elmer Johnson THIS PERSON | 23 | Son | Water Tender | Florida |
| 29 | Alice Johnson | 19 | Daughter | — | Florida |
| 30 | William R. Beechen | 50 | Head | Information Bureau | South Carolina |
| 31 | Melany Beechen | 49 | Wife | Trained Nurse | Florida |
| 32 | William Beechen | 23 | Son | Salesman | Florida |
| 33 | Ernest Carlson | 42 | Head | Fireman | Minnesota |
| 34 | Nealy Carlson | 31 | Wife | — | Georgia |
| 35 | Willine Carlson | 19 | Daughter | Assist Cook | Florida |
| 36 | Thomas Slunder | 67 | Head | — | West Virginia |
| 37 | Jessie Slunder | 70 | Wife | — | West Virginia |
| 38 | Hadon Brisson | 37 | Head | Manager | Florida |
| 39 | Jessie Brisson | 35 | Wife | — | Florida |
| 40 | Robert Brisson | 8 | Son | — | Florida |
Pedigree Summary
Elmer + 1 sibling
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)