JL
John Lawson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Henry-County, Iowa
Our Model Tree links this John Lawson across the 1920, 1930 and 1940 US Censuses in Henry-County, Iowa (XGBoost, ~Confirmed), with identified parents John & Georgina — first a son (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Henry-County, Iowa |
| Surname | Lawson |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Mt. Pleasant |
| 1935 Residence (County) | Henry |
| Additional Details | |
| Occupation | plumber's helper |
| Industry | plumbing shop |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 800 |
| Highest Grade | C-1 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Plumber'S Helper |
| Township / Ward | Mt Pleasant |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Lawson | Head | — | 58 | ~1882 |
| John Lawson | Son | — | 23 | ~1917 |
| Georgina Lawson | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Henry, Iowa
Son, age 3
Henry, Iowa · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lawson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Henry, Iowa
Son, age 13
Henry, Iowa · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lawson |
| Given Name | John L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Henry-County, Iowa
Son, age 23
Henry-County, Iowa · implied b. ~1917 — 3 household members
| Surname | Lawson |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Mt. Pleasant |
| 1935 Residence (County) | Henry |
| Occupation | plumber's helper |
| Industry | plumbing shop |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 800 |
| Highest Grade | C-1 |
| 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 Lawson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Lawson (~0.92 confidence) and mother Georgina Lawson (~0.92 confidence) and father John Lawson (~0.92 confidence) and mother Georgina Lawson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Lawson
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Georgina Lawson
b. ~1865
Source mother
● Household
· direct · ~0.92
Father
John Lawson
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Georgina Lawson
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Lawson
Son · 1940 · age 23 · b. ~1917 · 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-t0627-01166-00937)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Paul O'Connor | 43 | Head | Proprietor | Iowa |
| 42 | Mary Q. O'Connor | 41 | Wife | — | Illinois |
| 43 | Lawrence O'Connor | 18 | Son | — | Iowa |
| 44 | Elizabeth O'Connor | 16 | Daughter | — | Iowa |
| 45 | Robert O'Connor | 14 | Son | — | Iowa |
| 46 | Joan F. O'Connor | 7 | Daughter | — | Iowa |
| 47 | Lawrence Wilson | 45 | Lodger | Clerk | Iowa |
| 48 | Howard Niswander | 47 | Head | Proprietor | Iowa |
| 49 | Flora Niswander | 42 | Wife | — | Iowa |
| 50 | Gertrude Niswander | 23 | Daughter | — | Iowa |
| 51 | Betty Niswander | 20 | Daughter | — | Iowa |
| 52 | Harriet Jenkins | 71 | Mother-in-law | — | Nebraska |
| 53 | Frank Roberts | 65 | Head | Carpenter | Iowa |
| 54 | Joseph Barnum | 40 | Head | Proprietor | Minnesota |
| 55 | Lura Barnum | 39 | Wife | — | Minnesota |
| 56 | Betty Barnum | 16 | Daughter | — | California |
| 57 | Phyllis Barnum | 10 | Daughter | — | Minnesota |
| 58 | Clara B. Kopp | 69 | Head | — | Iowa |
| 59 | Clifford Vance | 37 | Head | Lawyer | Iowa |
| 60 | Veda Vance | 32 | Wife | — | Iowa |
| 61 | Randall Vance | 12 | Son | — | Iowa |
| 62 | Marilyn Vance | 8 | Daughter | — | Iowa |
| 63 | John H. Jericho | 74 | Head | Proprietor | Iowa |
| 64 | Maude L. Jericho | 67 | Wife | — | Iowa |
| 65 | William Cameron | 25 | Head | Salesman | Minnesota |
| 66 | Eileen Cameron | 30 | Wife | — | Minnesota |
| 67 | Lloyd Byrum | 60 | Lodger | Truck Driver | Iowa |
| 68 | Irvin Conover | 61 | Head | Proprietor | Iowa |
| 69 | Maude R. Conover | 59 | Wife | Helper | Iowa |
| 70 | Margaret Conover | 22 | Daughter | — | Iowa |
| 71 | Jasper M. Taylor | 57 | Head | Yard Man | Iowa |
| 72 | Delora Taylor | 56 | Wife | — | Iowa |
| 73 | John H. Lawson | 58 | Head | Plumber & Shop Proprietor | Scotland |
| 74 | Georgina Lawson | 55 | Wife | — | Scotland |
| 75 | John Jr. Lawson THIS PERSON | 23 | Son | Plumber'S Helper | Iowa |
| 76 | Winifred R. Lemon | 37 | Head | Grade Teacher | Iowa |
| 77 | Robert Coughlan | 22 | Head | Office Work | Iowa |
| 78 | Adra Coughlan | 21 | Wife | — | Illinois |
| 79 | Holston Lindsay | 59 | Head | Salesman | Iowa |
| 80 | Marguerite Lindsay | 55 | Wife | Proprietor | Missouri |
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)