JL
James Laughlin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lee-County, Iowa
Our Model Tree links this James Laughlin across the 1930 and 1940 US Censuses in Lee-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 7-person household.
Age 12
b. ~1928
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lee-County, Iowa |
| Surname | Laughlin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ft Madison |
| 1935 Residence (County) | Lee |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Ft Madison |
| Est. Birth Year | ~1928 |
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 |
|---|---|---|---|---|
| James Laughlin | Son | — | 12 | ~1928 |
| Thomas Laughlin | Son | — | 20 | ~1920 |
| Cleo Laughlin | Head | — | 46 | ~1894 |
| Virginia Laughlin | Daughter | — | 17 | ~1923 |
| Adelaide Laughlin | Spouse | — | 46 | ~1894 |
| William Laughlin | Son | — | 10 | ~1930 |
| Harold Laughlin | Son | — | 21 | ~1919 |
Census Appearances
1930
Lee, Iowa
Son, age 3
Lee, Iowa · implied b. ~1927 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Laughlin |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Nebraska |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Lee-County, Iowa
Son, age 12
Lee-County, Iowa · implied b. ~1928 — 7 household members
| Surname | Laughlin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ft Madison |
| 1935 Residence (County) | Lee |
| Highest Grade | No 5 |
| 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 James Laughlin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Laughlin
Son · 1940 · age 12 · b. ~1928 · Iowa
★ You are viewing this record
Sibling
Harold Laughlin
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Laughlin
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Laughlin
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Laughlin
Sibling · 1940 · age 10
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 — Lee-County, Iowa
Open full size
1940 US Federal Census — Lee-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01174-00828)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lydia C Coggeshall | 53 | Wife | — | Iowa |
| 2 | Iris Coggeshall | 21 | Daughter | Assembly | Iowa |
| 3 | Ormand Coggeshall | 18 | Son | New Worker | Iowa |
| 4 | Norbert Coggeshall | 16 | Son | — | Kansas |
| 5 | Cleo R Laughlin | 46 | Head | Woodworking | Illinois |
| 6 | Adelaide Laughlin | 46 | Wife | Seamstress | Nebraska |
| 7 | Harold Laughlin | 21 | Son | Door Man | Iowa |
| 8 | Thomas Laughlin | 20 | Son | Custodian | Iowa |
| 9 | Virginia Laughlin | 17 | Daughter | — | Iowa |
| 10 | James Laughlin THIS PERSON | 12 | Son | — | Iowa |
| 11 | William Laughlin | 10 | Son | — | Iowa |
| 12 | Price R Richards | 52 | Head | Switchman | Missouri |
| 13 | Alta Richards | 54 | Wife | — | Indiana |
| 14 | Edward Richards | 15 | Son | — | Iowa |
| 15 | Don Rice Richards | 12 | Son | — | Iowa |
| 16 | Ed R Knoblach | 50 | Head | — | Iowa |
| 17 | George Knoblach | 45 | Brother | — | Iowa |
| 18 | Jack W Peeler | 28 | Head | New Worker | Kentucky |
| 19 | Minnie C Peeler | 73 | Mother | — | Kentucky |
| 20 | Elmer Jack Peeler | 7 | Son | — | Iowa |
| 21 | James Thomas Peeler | 4 | Son | — | Iowa |
| 22 | Leonard Kokjohn | 45 | Head | Chief Engineer | Iowa |
| 23 | Ruth D Kokjohn | 44 | Wife | — | Illinois |
| 24 | Mildred Kokjohn | 21 | Daughter | Stenographer | Nebraska |
| 25 | Harriet Kokjohn | 18 | Daughter | Shipping Clerk | Iowa |
| 26 | Arabel Ferris | 33 | Head | Assembly | Iowa |
| 27 | Charles Robert Ferris | 9 | Son | — | Iowa |
| 28 | Opal Crandall | 34 | Lodger | Waitress | Missouri |
| 29 | Claude Samples | 40 | Lodger | Roll Trucker | Indiana |
| 30 | Rosetta Jones | 23 | Lodger | Housekeeper | Illinois |
| 31 | Frances Myers | 84 | Head | — | Iowa |
| 32 | Mary Walsworth | 81 | Sister | — | Iowa |
| 33 | Jessie D Andrews | 60 | Lodger | — | Iowa |
| 34 | John D Rose | 58 | Head | Boilermaker | Iowa |
| 35 | Pearl Rose | 57 | Wife | — | Iowa |
| 36 | Virginia Rose | 30 | Daughter | Teacher | Iowa |
| 37 | Ruth Rose | 25 | Daughter | Sales Lady | Iowa |
| 38 | Robert Rose | 22 | Son | Helper | Iowa |
| 39 | Ben Jones | 44 | Head | Train Dispatcher | Colorado |
| 40 | Madge Jones | 41 | Wife | — | West Virginia |
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)