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John Allen — 1940 US Census Record
Model Tree available1940 United States Federal Census · Miami-County, Ohio
Our Model Tree links this John Allen across the 1920, 1930 and 1940 US Censuses in Miami-County, Ohio (XGBoost, ~Confirmed), with identified parents Oscar & Grace — first a son (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Miami-County, Ohio |
| Surname | Allen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Concord Township |
| 1935 Residence (County) | Miami |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm Grinding |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 98 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Laborer |
| Township / Ward | Concord Township |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Oscar Allen | Head | — | 64 | ~1876 |
| Oscar Allen | Son | — | 20 | ~1920 |
| John Allen | Son | — | 31 | ~1909 |
| Grace Allen | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Miami, Ohio
Son, age 10
Miami, Ohio · implied b. ~1910 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Miami, Ohio
Son, age 21
Miami, Ohio · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Occupation | Welder |
| Industry | Aircraft |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Miami-County, Ohio
Son, age 31
Miami-County, Ohio · implied b. ~1909 — 4 household members
| Surname | Allen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Concord Township |
| 1935 Residence (County) | Miami |
| Occupation | Laborer |
| Industry | Farm Grinding |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 98 |
| Highest Grade | No 8 |
| 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 John Allen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Oscar Allen (~0.92 confidence) and mother Grace Allen (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Oscar Allen
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Grace Allen
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Allen
Son · 1940 · age 31 · b. ~1909 · Ohio
★ You are viewing this record
Sibling
Oscar Allen
Sibling · 1940 · age 20
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 — Miami-County, Ohio
Open full size
1940 US Federal Census — Miami-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03115-00400)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Warren Jr. Webb | 3 | Son | — | Ohio |
| 42 | Richard A. Webb | 1 | Son | — | Ohio |
| 43 | John Fawke | 65 | Head | Farmer | Germany |
| 44 | Mary Fawke | 65 | Wife | — | Germany |
| 45 | Elmer Hundberger | 60 | Head | Farmer | Ohio |
| 46 | Catherine Hundberger | 64 | Wife | — | Ohio |
| 47 | Oscar Allen | 64 | Head | Painter | Ohio |
| 48 | Grace Allen | 58 | Wife | — | Indiana |
| 49 | John Allen THIS PERSON | 31 | Son | Laborer | Ohio |
| 50 | Oscar Jr. Allen | 20 | Son | Retail Clerk | Ohio |
| 51 | Lester Kerns | 58 | Head | Farmer | Ohio |
| 52 | Georgia Kerns | 54 | Wife | — | Ohio |
| 53 | Leo Rehmert | 34 | Head | Farmer | Ohio |
| 54 | Louise Rehmert | 30 | Wife | — | Ohio |
| 55 | Mary K. Rehmert | 5 | Daughter | — | Ohio |
| 56 | Eugene Rehmert | 3 | Son | — | Ohio |
| 57 | August Zeller | 77 | Father-in-law | — | Ohio |
| 58 | Eugene Single | 62 | Head | Packer | Germany |
| 59 | Estella Single | 62 | Wife | — | Ohio |
| 60 | Ada F. Bayer | 56 | Sister-in-law | Teacher | Ohio |
| 61 | William Kuhl | 59 | Head | Mechanic | Wisconsin |
| 62 | Erline Kuhl | 28 | Wife | — | Ohio |
| 63 | Kermit Kuhl | 9 | Son | — | Ohio |
| 64 | Kathleen Kuhl | 6 | Daughter | — | Ohio |
| 65 | Charles L. Long | 47 | Head | Night Watchman | Ohio |
| 66 | Etta Long | 45 | Wife | — | Ohio |
| 67 | Mary Long | 16 | Daughter | — | Ohio |
| 68 | Charles Jr. Long | 13 | Son | — | Ohio |
| 69 | Sarah Jane Long | 12 | Daughter | — | Ohio |
| 70 | Harold Long | 10 | Son | — | Ohio |
| 71 | James Long | 7 | Son | — | Ohio |
| 72 | Robert Long | 4 | Son | — | Ohio |
| 73 | Robert Brumbaugh | 42 | Head | Farmer | Ohio |
| 74 | Nellie Brumbaugh | 45 | Sister | — | Ohio |
| 75 | C. C. Coate | 71 | Head | Farmer | Ohio |
| 76 | Bertha Coate | 50 | Wife | — | Ohio |
| 77 | Dorothy Newell | 16 | Step-daughter | — | Ohio |
| 78 | Twila Newell | 15 | Step-daughter | — | Ohio |
| 79 | Arthur Lindner | 33 | Head | Core Maker | Wisconsin |
| 80 | Mabel Lindner | 34 | Wife | — | Ohio |
Related Census Records
Pedigree Summary
John + 1 sibling
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)