JL
John Lamb — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jasper-County, Iowa
Our Model Tree links this John Lamb across the 1920, 1930 and 1940 US Censuses in Jasper-County, Iowa (XGBoost, ~Confirmed), with identified parents Price & Nettie — first a son (b.~1915), then head of a 3-person household.
Age 25
b. ~1915
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jasper-County, Iowa |
| Surname | Lamb |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Malaka Township |
| 1935 Residence (County) | Jasper County |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 75 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Malaka Township |
| Est. Birth Year | ~1915 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Lamb | Son | — | 25 | ~1915 |
| Price Lamb | Head | — | 62 | ~1878 |
| Nettie Lamb | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Poweshiek, Iowa
Son, age 5
Poweshiek, Iowa · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Poweshiek, Iowa
Son, age 16
Poweshiek, Iowa · implied b. ~1914 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Jasper-County, Iowa
Son, age 25
Jasper-County, Iowa · implied b. ~1915 — 3 household members
| Surname | Lamb |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Malaka Township |
| 1935 Residence (County) | Jasper County |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 75 |
| Income (1939) | 0 |
| Highest Grade | 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 John Lamb across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Price Lamb (~0.92 confidence) and mother Nettie Lamb (~0.92 confidence) and father Harrison Lamb (~0.92 confidence) and father Henry Lamb (~0.92 confidence) and mother Nellie Lamb (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Price Lamb
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Nettie Lamb
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Harrison Lamb
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Henry Lamb
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Nellie Lamb
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Lamb
Son · 1940 · age 25 · b. ~1915 · 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 — Jasper-County, Iowa
Open full size
1940 US Federal Census — Jasper-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01169-00348)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leonard Cook | 20 | Hired hand | Farm Hand | Iowa |
| 2 | William Stock | 35 | Head | Farmer | Iowa |
| 3 | Verna Stock | 33 | Wife | — | Iowa |
| 4 | Janet Stock | 8 | Daughter | — | Iowa |
| 5 | Paul Stock | 4 | Son | — | Iowa |
| 6 | Rosemary Stock | 1 | Daughter | — | Iowa |
| 7 | Monroe Morris | 31 | Hired hand | Farm Hand | Missouri |
| 8 | Viola Morris | 18 | Lodger-wife | — | Missouri |
| 9 | Roy Hotger | 25 | Head | Farmer | Iowa |
| 10 | Roberta Hotger | 21 | Wife | — | Iowa |
| 11 | Constance J. Hotger | 2 | Daughter | — | Iowa |
| 12 | Ronald D. Hotger | 1 | Son | — | Iowa |
| 13 | Mary Hotger | 56 | Mother | — | Iowa |
| 14 | Florence Hotger | 30 | Sister | Teaching | Iowa |
| 15 | Irene Hotger | 17 | Sister | — | Iowa |
| 16 | Marie Hotger | 20 | Sister | Teaching | Iowa |
| 17 | James Vancice | 25 | Head | Farmer | Iowa |
| 18 | Dorothy Vancice | 24 | Wife | — | Iowa |
| 19 | Jane Charlotte Vancice | 1 | Daughter | — | Iowa |
| 20 | Arvin Bollhoefer | 45 | Head | Farmer | Iowa |
| 21 | Meta Bollhoefer | 45 | Wife | — | Iowa |
| 22 | Marjory Bollhoefer | 15 | Daughter | — | Iowa |
| 23 | Darlene Bollhoefer | 13 | Daughter | — | Iowa |
| 24 | Robert Bollhoefer | 11 | Son | — | Iowa |
| 25 | Caroline Bollhoefer | 4 | Daughter | — | Iowa |
| 26 | Phillip S. Hill | 70 | Head | Farmer | Illinois |
| 27 | Ida Hill | 69 | Wife | — | Iowa |
| 28 | Bessie E. Hill | 38 | Daughter | — | Iowa |
| 29 | Virgil Gontz | 32 | Head | Farmer | Iowa |
| 30 | Bertha Gontz | 29 | Wife | — | Iowa |
| 31 | Doris Jean Gontz | 7 | Daughter | — | Iowa |
| 32 | Price Lamb | 62 | Head | Farmer | Iowa |
| 33 | Nettie Lamb | 60 | Wife | — | Iowa |
| 34 | John Lamb THIS PERSON | 25 | Son | Farmer | Iowa |
| 35 | William Menecke | 45 | Head | Farmer | Germany |
| 36 | Lillian Menecke | 42 | Wife | — | Iowa |
| 37 | Mildred Menecke | 15 | Daughter | — | Iowa |
| 38 | Gavin P. Rader | 71 | Head | Farmer | Iowa |
| 39 | Mary D. Rader | 64 | Wife | — | Iowa |
| 40 | Benjamin Foster | 69 | Head | Farmer | Iowa |
Pedigree Summary
John
Gen 1 · 5 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)