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William Lynch — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this William Lynch across the 1920, 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: IDAHO
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | LYNCH |
| Given Name | WILLIAM T. |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | IDAHO |
| 1935 Residence (City) | ST. LOUIS (CITY) |
| 1935 Residence (County) | St. Louis City |
| Additional Details | |
| Occupation | CHAUFER |
| Industry | SODA CO. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 420 |
| Highest Grade | No 8 |
| 1935 Residence | SAME HOUSE |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Occupation | Chaufer |
| Township / Ward | St Louis City |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Thomas Lynch | Head | — | 65 | ~1875 |
| Joseph Hardin | Other | — | 76 | ~1864 |
| William Lynch | Son | — | 25 | ~1915 |
| Margaret Lynch | Spouse | — | 65 | ~1875 |
Census Appearances
1920
X, Missouri
Son, age 5
X, Missouri · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | William T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Alabama |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1930
St Louis, …
Son, age 15
St Louis, Missouri · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
St.-Louis-City-County, Missouri
Son, age 25
St.-Louis-City-County, Missouri · implied b. ~1915 — 4 household members
| Surname | LYNCH |
| Given Name | WILLIAM T. |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | IDAHO |
| 1935 Residence (City) | ST. LOUIS (CITY) |
| 1935 Residence (County) | St. Louis City |
| Occupation | CHAUFER |
| Industry | SODA CO. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 420 |
| Highest Grade | No 8 |
| 1935 Residence | SAME HOUSE |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
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 William Lynch across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Thomas Lynch (~0.92 confidence) and father Thomas Lynch (~0.92 confidence) and father Thomas Lynch (~0.92 confidence) and mother Margaret Lynch (~0.92 confidence) and mother Margaret Lynch (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Lynch
b. ~1869
Source father
● Household
· direct · ~0.92
Father
Thomas Lynch
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Thomas Lynch
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Margaret Lynch
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Margaret Lynch
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Lynch
Son · 1940 · age 25 · b. ~1915 · 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-City-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-City-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02209-00112)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James Nerf | 32 | SON | Cashier | MISSOURI |
| 42 | Frank Nerf | 30 | SON | — | MISSOURI |
| 43 | John Nerf | 28 | SON | Office Clerk | MISSOURI |
| 44 | Clyde T. Smith | 49 | HEAD | Insurance Sales | KENTUCKY |
| 45 | Rose B. Smith | 45 | WIFE | — | NEBRASKA |
| 46 | Walter Smith | 20 | SON | — | MISSOURI |
| 47 | Roy Jackson | 32 | LODGER | Clerk | MISSOURI |
| 48 | Bessie Jackson | 29 | LODGER | Candy Packer | ILLINOIS |
| 49 | Peter Ragen | 40 | LODGER | Carpenter | PENNSYLVANIA |
| 50 | Alice Ragen | 45 | LODGER | — | ILLINOIS |
| 51 | Nuncio Ponte | 56 | HEAD | Barber | ITALY |
| 52 | Charlotte Ponte | 55 | WIFE | — | ITALY |
| 53 | Mother Vincences | None | F | — | — |
| 54 | Mary E. Scanlan | 69 | HEAD | — | MISSOURI |
| 55 | Daniel Scanlan | 37 | SON | Grinder | MISSOURI |
| 56 | Lawrence Q. Scanlan | 32 | SON | Laborer | MISSOURI |
| 57 | Bessie Davies | 35 | DAUGHTER | — | MISSOURI |
| 58 | Thomas Davies | 38 | SON-IN-LAW | Salesman | MISSOURI |
| 59 | Marilene Davies | 12 | GRAND DAUGHT. | — | MISSOURI |
| 60 | Betty Davies | 9 | GRAND DAUGHT. | — | MISSOURI |
| 61 | Gertrude Scanlan | 32 | DAUGHTER-IN-LAW | Milliner | MISSOURI |
| 62 | Marie Cleary | 22 | COUSIN | Clerk | MISSOURI |
| 63 | Katherine Cleary | 45 | COUSIN | — | MISSOURI |
| 64 | Adelaide Lamour | 20 | LODGER | Presser | MISSOURI |
| 65 | Nina F. Keppler | 43 | HEAD | — | ILLINOIS |
| 66 | Clyde Ellis | 42 | LODGER | Chaufer | MISSOURI |
| 67 | Herbert N. Werland | 24 | LODGER | Manager | ILLINOIS |
| 68 | Earl Irl Humphreys | 39 | HEAD | Electrician | MISSOURI |
| 69 | Ann Humphreys | 33 | WIFE | — | MISSOURI |
| 70 | Mary Ellen Humphreys | 8 | DAUGHTER | — | MISSOURI |
| 71 | James Humphreys | 5 | SON | — | MISSOURI |
| 72 | Margaret Humphreys | 4 | DAUGHTER | — | MISSOURI |
| 73 | Katherine Humphreys | 2 | DAUGHTER | — | MISSOURI |
| 74 | Lloyd Doyel | 42 | HEAD | Chaufer | MISSOURI |
| 75 | Gladys Doyel | 39 | WIFE | — | ILLINOIS |
| 76 | Raymond Doyel | 19 | SON | Factory Worker | IOWA |
| 77 | Thomas J. Lynch | 65 | HEAD | Trucker | PENNSYLVANIA |
| 78 | Margaret A. Lynch | 65 | WIFE | — | ALABAMA |
| 79 | William T. Lynch THIS PERSON | 25 | SON | Chaufer | IDAHO |
| 80 | Joseph H. Hardin | 76 | LODGER | Laborer | KENTUCKY |
Pedigree Summary
William
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)