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Mary Lamb — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Mary Lamb across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed) — first a spouse (b.~1885), then head of a 7-person household.
Age 55
b. ~1885
Female
Spouse
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Lamb |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1885 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Lucile Lamb | Other | — | 18 | ~1922 |
| Mary Lamb | Spouse | — | 55 | ~1885 |
| Charles Lamb | Son | — | 22 | ~1918 |
| James Lamb | Head | — | 61 | ~1879 |
| Roy Lamb | Son | — | 19 | ~1921 |
| Virginia Vance | Other | — | 2 | ~1938 |
| Mary Lamb | Daughter | — | 16 | ~1924 |
Census Appearances
1920
Jefferson, Kentucky
Spouse, age 35
Jefferson, Kentucky · implied b. ~1885 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Spouse, age 45
Jefferson, Kentucky · implied b. ~1885 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 18 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Spouse, age 55
Jefferson-County, Kentucky · implied b. ~1885 — 7 household members
| Surname | Lamb |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Mary Lamb across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lamb
Spouse · 1940 · age 55 · b. ~1885 · Kentucky
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Jefferson-County, Kentucky
Open full size
1940 US Federal Census — Jefferson-County, Kentucky
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01375-00004)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 2 | Arch Nelson | 60 | Head | Laborer | Indiana |
| 3 | Christie Nelson | 53 | Wife | — | Indiana |
| 4 | George Bermore | 33 | Stepson | Fireman | Kentucky |
| 5 | Clara Bermore | 18 | Daughter | — | Kentucky |
| 6 | John Bermore | 15 | Stepson | — | Kentucky |
| 7 | Ruby Bermore | 12 | Daughter | — | Kentucky |
| 8 | Louis Bermore | 9 | Stepson | — | Kentucky |
| 9 | James E. Lamb | 61 | Head | Laborer | Kentucky |
| 10 | Mary Lamb THIS PERSON | 55 | Wife | — | Kentucky |
| 11 | Roy Lamb | 19 | Son | Clerk | Kentucky |
| 12 | Mary E. Lamb | 16 | Daughter | — | Kentucky |
| 13 | Charles E. Lamb | 22 | Son | Laborer | Kentucky |
| 14 | Lucile Lamb | 18 | Daughter-in-law | — | Kentucky |
| 15 | Virginia Vance | 2 | Friend | — | Kentucky |
| 17 | James W. Black | 21 | Head | Laborer | Kentucky |
| 18 | Dorma D. Black | 18 | Wife | — | Kentucky |
| 19 | Gala V. Black | 1 | Daughter | — | Kentucky |
| 20 | Reniva Devore | 18 | Sister | — | Kentucky |
| 21 | William Zurlinden | 66 | Head | — | Kentucky |
| 22 | Florence Zurlinden | 61 | Sister | — | Kentucky |
| 23 | Emma Simms | 69 | Sister | — | Kentucky |
| 24 | Florence Flesher | 38 | Niece | — | Kentucky |
| 25 | Shirley Ann Flesher | 7 | Great Niece | — | Kentucky |
| 26 | Charles F. Lake | 59 | Lodger | — | Ohio |
| 27 | Robert R. Jones | 48 | Head | Laborer | Kentucky |
| 28 | Ida C. Jones | 53 | Wife | — | Kentucky |
| 29 | Robert R. Jr. Jones | 23 | Son | Laborer | Kentucky |
| 30 | Chester Napier | 27 | Head | — | Kentucky |
| 31 | Jessie Napier | 52 | Wife | — | Kentucky |
| 32 | Charles L. Napier | 28 | Son | Carpenter | Kentucky |
| 33 | Sidney J. Napier | 19 | Son | Carpenter | Kentucky |
| 34 | James Black | 75 | Father-in-law | — | Indiana |
| 35 | Mildred Black | 70 | Mother-in-law | — | Kentucky |
| 36 | Elmer Stout | 18 | Nephew | — | Indiana |
| 37 | Robert Black | 42 | Head | Laborer | Kentucky |
| 38 | James E. Jr. Black | 47 | Brother | Painter | Kentucky |
| 40 | Edward Colburn | 70 | Head | — | Kentucky |
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)