JL
James Lynch — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Johnson-County, Iowa
Our Model Tree links this James Lynch across the 1920, 1930 and 1940 US Censuses in Johnson-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 7-person household.
Age 56
b. ~1884
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Johnson-County, Iowa |
| Surname | Lynch |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Liberty Twp |
| 1935 Residence (County) | Johnson |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Liberty Twp |
| Est. Birth Year | ~1884 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Bernadine Lynch | Daughter | — | 7 | ~1933 |
| Cecilia Lynch | Daughter | — | 17 | ~1923 |
| James Lynch | Head | — | 56 | ~1884 |
| Cleo Lynch | Son | — | 12 | ~1928 |
| Melvin Lynch | Son | — | 23 | ~1917 |
| James Lynch | Son | — | 19 | ~1921 |
| Blanche Lynch | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Johnson, Iowa
Head, age 35
Johnson, Iowa · implied b. ~1885 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | James F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Johnson, Iowa
Head, age 46
Johnson, Iowa · implied b. ~1884 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | James P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | Genl farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 13 |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Johnson-County, Iowa
Head, age 56
Johnson-County, Iowa · implied b. ~1884 — 7 household members
| Surname | Lynch |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Liberty Twp |
| 1935 Residence (County) | Johnson |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 James Lynch across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Lynch
Head · 1940 · age 56 · b. ~1884 · Iowa
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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-t0627-01171-00719)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard Heitzman | 50 | Head | — | Iowa |
| 2 | Josephine Heitzman | 49 | Wife | — | Iowa |
| 3 | Stella Heitzman | 17 | Daughter | Housekeeper | Iowa |
| 4 | Louis Heitzman | 13 | Son | Farm Labor | Iowa |
| 5 | Herman Heitzman | 11 | Son | Farm Labor | Iowa |
| 6 | Ralph Walsh | 26 | Head | Farmer | Iowa |
| 7 | Ruth Walsh | 22 | Wife | — | Iowa |
| 8 | John Fehrian | 44 | Head | Farmer | Iowa |
| 9 | Elsie Fehrian | 40 | Wife | — | Iowa |
| 10 | Roger Fehrian | 19 | Son | — | Iowa |
| 11 | Gerald Fehrian | 11 | Son | — | Iowa |
| 12 | James Fehrian | 6 | Son | — | Iowa |
| 13 | Leo Hoffman | 40 | Head | Farmer | Iowa |
| 14 | Helen Hoffman | 36 | Wife | — | Iowa |
| 15 | Jeanette Hoffman | 5 | Daughter | — | Iowa |
| 16 | Robert Rummelhart | 36 | Head | Mechanic | Iowa |
| 17 | Hilma Rummelhart | 29 | Wife | — | Illinois |
| 18 | Louis Schneeblen | 49 | Head | Traveling Salesman | Iowa |
| 19 | Zita Schneeblen | 50 | Wife | — | Iowa |
| 20 | Robert Schneeblen | 25 | Son | Farmer | Iowa |
| 21 | Marie Schneeblen | 22 | Daughter | New Worker | Iowa |
| 22 | Orval Schneeblen | 19 | Son | Farming | Iowa |
| 23 | Joyce Schneeblen | 12 | Daughter | — | Iowa |
| 24 | Nabo Schneeblen | 10 | Son | — | Iowa |
| 25 | Arnold Schneeblen | 8 | Son | — | Iowa |
| 26 | Daniel Birrer | 67 | Head | Farmer | Iowa |
| 27 | Louisa Birrer | 67 | Wife | — | Iowa |
| 28 | George Birrer | 29 | Son | Farm Labor | Iowa |
| 29 | Laura Birrer | 35 | Daughter | — | Iowa |
| 30 | Leo Jenn | 28 | Head | Farmer | Iowa |
| 31 | Vera Jenn | 23 | Wife | — | Iowa |
| 32 | Mary Lou Jenn | 1 | Daughter | — | Iowa |
| 33 | James Lynch THIS PERSON | 56 | Head | Farmer | Iowa |
| 34 | Blanche Lynch | 45 | Wife | — | Illinois |
| 35 | Melvin Lynch | 23 | Son | Farm Labor | Iowa |
| 36 | James Jr. Lynch | 19 | Son | — | Iowa |
| 37 | Cecilia Lynch | 17 | Daughter | — | Iowa |
| 38 | Cleo Lynch | 12 | Son | — | Iowa |
| 39 | Bernadine Lynch | 7 | Daughter | — | Iowa |
| 40 | Leo Grothe | 34 | Head | Farmer | Iowa |
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)