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William Lambert — 1940 US Census Record
Model Tree available1940 United States Federal Census · Harlan-County, Kentucky
Our Model Tree links this William Lambert across the 1920, 1930 and 1940 US Censuses in Harlan-County, Kentucky (XGBoost, ~Confirmed), with identified parents A & Melvina — first a son (b.~1916), then head of a 7-person household.
Age 24
b. ~1916
Male
Son
Born: Tennessee
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Harlan-County, Kentucky |
| Surname | Lambert |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Ages |
| 1935 Residence (County) | Harlan |
| Additional Details | |
| Occupation | Miner |
| Industry | Coal mine |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 230 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | Miner |
| Township / Ward | Ages |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Lucille Lambert | Daughter | — | 22 | ~1918 |
| Alex Lambert | Head | — | 26 | ~1914 |
| Clayton Haynes | Other | — | 37 | ~1903 |
| Taylor Furguson | Other | — | 30 | ~1910 |
| Josie Haynes | Other | — | 72 | ~1868 |
| William Lambert | Son | — | 24 | ~1916 |
| Ethel Lambert | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Harlan, Kentucky
Son, age 4
Harlan, Kentucky · implied b. ~1916 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lambert |
| Given Name | Willie |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1930
Harlan, Kentucky
Son, age 14
Harlan, Kentucky · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lambert |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Harlan-County, Kentucky
Son, age 24
Harlan-County, Kentucky · implied b. ~1916 — 7 household members
| Surname | Lambert |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Ages |
| 1935 Residence (County) | Harlan |
| Occupation | Miner |
| Industry | Coal mine |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 230 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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 Lambert across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father A Lambert (~0.92 confidence) and mother Melvina Lambert (~0.92 confidence) and father Alex Lambert (~0.92 confidence) and mother Ethel Lambert (~0.92 confidence) and mother Ethel Lambert (~0.92 confidence) and father Alex Lambert (~0.60 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.87
Father
A Lambert
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Melvina Lambert
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
Alex Lambert
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Ethel Lambert
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Ethel Lambert
b. ~1898
Source mother
● Household
· direct · ~0.92
Father
Alex Lambert
b. ~1914
Source father
● Household
· direct · ~0.6
This person
Anchor record
William Lambert
Son · 1940 · age 24 · b. ~1916 · Kentucky
★ You are viewing this record
Sibling
Lucille Lambert
Sibling · 1940 · age 22
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 — Harlan-County, Kentucky
Open full size
1940 US Federal Census — Harlan-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01313-00396)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Euston Lewis | 52 | Head | Miner | Tennessee |
| 2 | Mary Lewis | 48 | Wife | — | Tennessee |
| 3 | Pauline Lewis | 11 | Daughter | — | Kentucky |
| 4 | Roger Lewis | 34 | Head | Miner | Kentucky |
| 5 | Nellie Lewis | 27 | Wife | — | Kentucky |
| 6 | Myrtle Ralph Lewis | 6 | Daughter | — | Kentucky |
| 7 | Dewey Lewis | 5 | Son | — | Kentucky |
| 8 | Betty J. Lewis | 2 | Daughter | — | Kentucky |
| 9 | George Curry | 30 | Head | Miner | Kentucky |
| 10 | Ollie Curry | 23 | Wife | — | Kentucky |
| 11 | Mary B. Curry | 8 | Daughter | — | Kentucky |
| 12 | Helen Curry | 4 | Daughter | — | Kentucky |
| 13 | Dartha Curry | 3 | Daughter | — | Kentucky |
| 14 | Betty Curry | 0 | Daughter | — | Kentucky |
| 15 | Lloyd Burkhart | 48 | Head | Miner | Kentucky |
| 16 | Sudie Burkhart | 28 | Wife | — | Kentucky |
| 17 | Granville Sargent | 34 | Lodger | Miner | Kentucky |
| 18 | Ginger M. Wilder | 56 | Head | Miner | Kentucky |
| 19 | Ada Wilder | 34 | Wife | — | Kentucky |
| 20 | Nancy Wilder | 88 | Mother | — | Kentucky |
| 21 | Edward Smith | 27 | Head | Miner | Kentucky |
| 22 | Sarah Smith | 26 | Wife | — | Kentucky |
| 23 | Faustine Smith | 6 | Daughter | — | Kentucky |
| 24 | Sherline Smith | 4 | Daughter | — | Kentucky |
| 25 | Zona Smith | 3 | Daughter | — | Kentucky |
| 26 | Aquilla Sargent | 25 | Head | Miner | Kentucky |
| 27 | Geniva Sargent | 17 | Sister | New Worker | Kentucky |
| 28 | Bryson Sargent | 14 | Brother | — | Kentucky |
| 29 | Nancy J. Sargent | 57 | Mother | — | Kentucky |
| 30 | Ephriam V. Morris | 20 | Nephew | New Worker | Kentucky |
| 31 | Joe Morris | 18 | Nephew | Miner | Kentucky |
| 32 | Mallie Dunham | 74 | Head | — | Kentucky |
| 33 | Thomas Short | 55 | Head | Odd Jobs | Kentucky |
| 34 | Alex Lambert | 26 | Head | Miner | Tennessee |
| 35 | Ethel Lambert | 42 | Wife | — | Tennessee |
| 36 | William Lambert THIS PERSON | 24 | Son | Miner | Tennessee |
| 37 | Lucille Lambert | 22 | Daughter | New Worker | Tennessee |
| 38 | Josie Haynes | 72 | Mother in law | — | Tennessee |
| 39 | Clayton Haynes | 37 | Brother in law | Miner | Tennessee |
| 40 | Taylor Furguson | 30 | Lodger | Miner | Tennessee |
Pedigree Summary
William + 1 sibling
Gen 1 · 6 parents
~0.87
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)