JN
John Nolan — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Louis-County, Missouri
Our Model Tree links this John Nolan across the 1920, 1930 and 1940 US Censuses in St.-Louis-County, Missouri (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Male
Head
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Missouri |
| Surname | Nolan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Webster Groves |
| 1935 Residence (County) | St. Louis |
| Additional Details | |
| Occupation | A-C Mechanic |
| Industry | Electric Light Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1770 |
| Highest Grade | H 4 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | A-C Mechanic |
| Township / Ward | Richmond Heights |
| Est. Birth Year | ~1916 |
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 |
|---|---|---|---|---|
| Hope Nolan | Daughter | — | ~1940 | |
| John Nolan | Head | — | 24 | ~1916 |
| Hope Nolan | Spouse | — | 24 | ~1916 |
Census Appearances
1920
St Louis, …
Son, age 4
St Louis, Missouri · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nolan |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Illinois |
| Can Write | Yes |
| Speaks English | none |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
St Louis, …
Son, age 14
St Louis, Missouri · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nolan |
| Given Name | John R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-County, Missouri
Head, age 24
St.-Louis-County, Missouri · implied b. ~1916 — 3 household members
| Surname | Nolan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Webster Groves |
| 1935 Residence (County) | St. Louis |
| Occupation | A-C Mechanic |
| Industry | Electric Light Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1770 |
| Highest Grade | H 4 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Nolan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Nolan (~0.92 confidence) and father John Nolan (~0.92 confidence) and mother Violette Nolan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Nolan
b. ~1885
Source father
● Household
· direct · ~0.92
Father
John Nolan
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Violette Nolan
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Nolan
Head · 1940 · age 24 · b. ~1916 · Missouri
★ 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 — St.-Louis-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02150-01010)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John B. Bohnen | 61 | Head | Laborer | Germany |
| 2 | Annie C. Bohnen | 58 | Wife | — | Missouri |
| 3 | Ann M. Foley | 24 | Step-daughter | Stenographer | Missouri |
| 4 | William J. Foley | 23 | Step-son | Laborer | Missouri |
| 5 | Ralph W. Bohn | 24 | Head | Barber Supply | Missouri |
| 6 | Dorothy A. Bohn | 24 | Wife | — | Missouri |
| 7 | Carl E. Wildberger | 24 | Head | Salesman | Missouri |
| 8 | Janet H. Wildberger | 24 | Wife | — | Missouri |
| 9 | Edward V. Womack | 26 | Head | Salesman | New York |
| 10 | Julia M. Womack | 22 | Wife | Bookkeeper | Missouri |
| 11 | Robert Welsh | 25 | Head | Salesman | Missouri |
| 12 | Ellen Welsh | 26 | Wife | — | Missouri |
| 13 | Arnold Schaufler | 26 | Head | Mechanical Engineer | Missouri |
| 14 | Mollie Schaufler | 27 | Wife | — | Poland |
| 15 | Robert L. Durst | 28 | Head | Salesman | Illinois |
| 16 | Lurline Durst | 26 | Wife | — | Mississippi |
| 17 | Clifford J. Ruthbein | 26 | Head | Retail Grocery Manager | Missouri |
| 18 | Dorothy V. Ruthbein | 30 | Wife | — | Missouri |
| 19 | Joseph J. Shell | 25 | Head | Merchandise Man | New Jersey |
| 20 | Grace Shell | 24 | Wife | — | New Jersey |
| 21 | Karl Shell | 1 | Son | — | New Jersey |
| 22 | Farrell E. Browning | 34 | Head | Salesman | Missouri |
| 23 | Zelata S. Browning | 33 | Wife | Inspectress | Illinois |
| 24 | John Nolan THIS PERSON | 24 | Head | A-C Mechanic | Missouri |
| 25 | Hope Nolan | 24 | Wife | — | Missouri |
| 26 | Hope Nolan | 0 | Daughter | — | Missouri |
| 27 | Harold Harris | 28 | Head | Sales Engineer | Kansas |
| 28 | Zelda Harris | 27 | Wife | — | Nebraska |
| 29 | Melton Johns | 28 | Head | Electrical Salesman | Missouri |
| 30 | Agnes Johns | 25 | Wife | — | Missouri |
| 31 | Arlene Johns | 5 | Daughter | — | Missouri |
| 32 | Larry Johns | 1 | Son | — | Missouri |
| 33 | George Wolf | 58 | Head | Railway Clerk | Missouri |
| 34 | Elizabeth Wolf | 57 | Wife | — | Illinois |
| 35 | Bernice Wolf | 22 | Daughter | Comptometer | Missouri |
| 36 | Robert Wolf | 19 | Son | — | Missouri |
| 37 | Eugene Wolf | 17 | Son | — | Missouri |
| 38 | Carl Koren | 52 | Head | Superintendent | Sweden |
| 39 | Anna Koren | 51 | Wife | — | Sweden |
| 40 | Walfred Koren | 27 | Son | Efficiency Expert | Maine |
Pedigree Summary
John
Gen 1 · 3 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)