JL
John Lyon — 1940 US Census Record
Model Tree available1940 United States Federal Census · Henry-County, Iowa
Our Model Tree links this John Lyon across the 1920, 1930 and 1940 US Censuses in Henry-County, Iowa (XGBoost, ~Confirmed), with identified parents Charles & L — first a head (b.~1904), then head of a 6-person household.
Age 36
b. ~1904
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Henry-County, Iowa |
| Surname | Lyon |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Henry |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 65 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1904 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Opal Lyon | Daughter | — | ~1940 | |
| Mary Kirkpatrick | Other | — | 63 | ~1877 |
| Donald Lyon | Son | — | 3 | ~1937 |
| Esther Lyon | Spouse | — | 29 | ~1911 |
| John Lyon | Head | — | 36 | ~1904 |
| Macil Lyon | Daughter | — | 5 | ~1935 |
Census Appearances
1920
Henry, Iowa
Son, age 16
Henry, Iowa · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyon |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Naturalization Status | Naturalized |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Henry, Iowa
Son, age 26
Henry, Iowa · implied b. ~1904 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyon |
| Given Name | John L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Farm Hand |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Henry-County, Iowa
Head, age 36
Henry-County, Iowa · implied b. ~1904 — 6 household members
| Surname | Lyon |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Henry |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 65 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| 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 John Lyon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Lyon (~0.92 confidence) and father L Lyon (~0.92 confidence) and mother Dora Lyon (~0.92 confidence) and mother Sarah Lyon (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Lyon
b. ~1880
Source father
● Household
· direct · ~0.92
Father
L Lyon
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Dora Lyon
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Sarah Lyon
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Lyon
Head · 1940 · age 36 · b. ~1904 · Iowa
★ 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 — Henry-County, Iowa
Open full size
1940 US Federal Census — Henry-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01166-00710)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Irene Spiedermeyer | 7 | Daughter | — | Iowa |
| 42 | Antone J Baumen | 61 | Head | Farmer | Iowa |
| 43 | Sophia Baumen | 60 | Wife | — | Iowa |
| 44 | Leonard Baumen | 15 | Son | Farm Laborer | Iowa |
| 45 | James Swanger | 53 | Head | Farmer | Iowa |
| 46 | Gertrude Swanger | 50 | Wife | — | Iowa |
| 47 | Floyd Swanger | 31 | Son | — | Iowa |
| 48 | Florence Swanger | 15 | Daughter | — | Iowa |
| 49 | Violet Swanger | 9 | Daughter | — | Iowa |
| 50 | Earl Skinner | 39 | Head | Farmer | Iowa |
| 51 | Edna Skinner | 38 | Wife | — | Iowa |
| 52 | Clema Skinner | 16 | Daughter | — | Iowa |
| 53 | Virginia Skinner | 13 | Daughter | — | Iowa |
| 54 | Edward Fedler | 30 | Head | Farmer | Iowa |
| 55 | Berna Fedler | 26 | Wife | — | Iowa |
| 56 | Dean Fedler | 6 | Son | — | Iowa |
| 57 | Janice Fedler | 2 | Daughter | — | Iowa |
| 58 | John Lyon THIS PERSON | 36 | Head | Farmer | Iowa |
| 59 | Esther Lyon | 29 | Wife | — | Iowa |
| 60 | Macil Lyon | 5 | Daughter | — | Iowa |
| 61 | Donald Lyon | 3 | Son | — | Iowa |
| 62 | Opal Lyon | 0 | Daughter | — | Iowa |
| 63 | Mary Kirkpatrick | 63 | Mother | — | Iowa |
| 64 | Ray Gerber | 53 | Head | Filling Station Operator | Iowa |
| 65 | Leah Gerber | 45 | Wife | — | Iowa |
| 66 | Bertha Gerber | 16 | Daughter | — | Iowa |
| 67 | Elsie Gerber | 15 | Daughter | — | Iowa |
| 68 | Darrell Gerber | 13 | Son | — | Iowa |
| 69 | Arthur Swailes | 26 | Head | Farm Laborer | Iowa |
| 70 | Erma Swailes | 23 | Wife | — | Iowa |
| 71 | Jimmy Swailes | 3 | Son | — | Iowa |
| 72 | Harold Swailes | 1 | Son | — | Iowa |
| 73 | Edmund Stephenson | 72 | Head | Retired Business Man | Iowa |
| 74 | Ellen Stephenson | 63 | Wife | — | Iowa |
| 75 | Charlie B Thornburg | 49 | Head | Hardware | Iowa |
| 76 | Annetta Thornburg | 45 | Wife | — | Iowa |
| 77 | Burton Thornburg | 26 | Son | Farm Laborer | Iowa |
| 78 | Marna Thornburg | 17 | Daughter | — | Iowa |
| 79 | Dayton Thornburg | 8 | Son | — | Iowa |
| 80 | Alpha Thornburg | 77 | Head | — | Iowa |
Pedigree Summary
John
Gen 1 · 4 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)