LM
Leo Miller — 1940 US Census Record
Model Tree available1940 United States Federal Census · Johnson-County, Iowa
Our Model Tree links this Leo Miller across the 1920, 1930 and 1940 US Censuses in Johnson-County, Iowa (XGBoost, ~Confirmed), with identified parents Charles & G — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Johnson-County, Iowa |
| Surname | Miller |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Madison Township |
| 1935 Residence (County) | Johnson |
| Additional Details | |
| Occupation | Farm Help |
| Class of Worker | NP |
| Hours Worked | 66 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farm Help |
| Township / Ward | Madison Township |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Leo | Age | Birth yr |
|---|---|---|---|---|
| Clarence Miller | Son | — | 18 | ~1922 |
| Helen Miller | Daughter | — | 21 | ~1919 |
| Charles Miller | Head | — | 59 | ~1881 |
| Annie Miller | Spouse | — | 50 | ~1890 |
| Leo Miller | Son | — | 23 | ~1917 |
Census Appearances
1920
Johnson, Iowa
Son, age 1
Johnson, Iowa · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miller |
| Given Name | Leopold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Johnson, Iowa
Son, age 12
Johnson, Iowa · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miller |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Johnson-County, Iowa
Son, age 23
Johnson-County, Iowa · implied b. ~1917 — 5 household members
| Surname | Miller |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Madison Township |
| 1935 Residence (County) | Johnson |
| Occupation | Farm Help |
| Class of Worker | NP |
| Hours Worked | 66 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Leo Miller across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Miller (~0.92 confidence) and father G Miller (~0.92 confidence) and father Gust Miller (~0.92 confidence) and mother Gertrude Miller (~0.92 confidence) and mother Gertrude Miller (~0.92 confidence) and mother Annie Miller (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Miller
b. ~1881
Source father
● Household
· direct · ~0.92
Father
G Miller
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Gust Miller
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Gertrude Miller
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Gertrude Miller
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Annie Miller
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Leo Miller
Son · 1940 · age 23 · b. ~1917 · Iowa
★ You are viewing this record
Sibling
Clarence Miller
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Miller
Sibling · 1940 · age 21
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 — Johnson-County, Iowa
Open full size
1940 US Federal Census — Johnson-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01171-00745)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | C. D. Myers | 62 | Head | Farming | Iowa |
| 2 | Fay E. Myers | 53 | Wife | Housewife | Illinois |
| 3 | Raymond Snavely | 53 | Head | Farming | Iowa |
| 4 | Mabel Snavely | 51 | Wife | Housewife | Kansas |
| 5 | Carl Snavely | 29 | Son | Farm Help | Iowa |
| 6 | Charles Miller | 59 | Head | Farming | Bohemia |
| 7 | Annie Miller | 50 | Wife | Housewife | Bohemia |
| 8 | Leo Miller THIS PERSON | 23 | Son | Farm Help | Iowa |
| 9 | Helen Miller | 21 | Daughter | — | Iowa |
| 10 | Clarence Miller | 18 | Son | Farm Help | Iowa |
| 11 | Joe W. Novy | 65 | Head | Farming | Iowa |
| 12 | Julia Novy | 63 | Wife | House Work | Iowa |
| 13 | Rose Spabaneck | 18 | Lodger | Hired Girl | Kansas |
| 14 | Samuel Leininger | 76 | Head | Farming | Iowa |
| 15 | Frankie Leininger | 68 | Wife | House Wife | Iowa |
| 16 | J. C. Fuhrmeister | 50 | Head | Farming | Iowa |
| 17 | Nellie M. Fuhrmeister | 52 | Wife | House Wife | Iowa |
| 18 | Laurence Fuhrmeister | 24 | Son | House Work | Iowa |
| 19 | Rose Mary Fuhrmeister | 22 | Daughter | House Work | Iowa |
| 20 | Paul Fuhrmeister | 17 | Son | In School | Iowa |
| 21 | W. W. Brender | 26 | Head | Road Work | Iowa |
| 22 | Lida Brender | 26 | Wife | House Wife | Iowa |
| 23 | Susan Brender | 3 | Daughter | — | Iowa |
| 24 | Karen Brender | 2 | Daughter | — | Iowa |
| 25 | J. J. Canning | 50 | Head | Farming | Iowa |
| 26 | Nellie Canning | 48 | Wife | House Wife | Iowa |
| 27 | John W. Canning | 18 | Son | Farm Help | Iowa |
| 28 | Robert Leo Canning | 12 | Son | In School | Iowa |
| 29 | Donald Canning | 9 | Son | In School | Iowa |
| 30 | Margaret Canning | 6 | Daughter | In School | Iowa |
| 31 | Bert Martin | 44 | Head | Farming | Iowa |
| 32 | Frances V. Martin | 43 | Wife | House Wife | Iowa |
| 33 | Lester Martin | 21 | Son | Farm Help | Iowa |
| 34 | Aalois Martin | 19 | Son | In School | Iowa |
| 35 | Robert W. Martin | 18 | Son | Farm Help | Iowa |
| 36 | Van A. Martin | 16 | Son | In School | Iowa |
| 37 | Lucille Martin | 13 | Daughter | In School | Iowa |
| 38 | Maurice Martin | 11 | Son | In School | Iowa |
| 39 | Earl Flory | 26 | Head | Carpenter | Kansas |
| 40 | Rosalia Flory | 27 | Wife | School Teacher | Iowa |
Pedigree Summary
Leo + 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)