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Martha Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Knox-County, Kentucky
Our Model Tree links this Martha Brown across the 1920, 1930 and 1940 US Censuses in Knox-County, Kentucky (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1911), then head of a 6-person household.
Age 29
b. ~1911
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Knox-County, Kentucky |
| Surname | Brown |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag. Dist. 7 |
| 1935 Residence (County) | Knox |
| Additional Details | |
| Occupation | Junior Clerk |
| Industry | Health Project |
| Class of Worker | GW |
| Hours Worked | 32 |
| Income (1939) | 970 |
| Highest Grade | C 3 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Junior Clerk |
| Township / Ward | Mag Dist 7 |
| Est. Birth Year | ~1911 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Nellie Brown | Daughter | — | 22 | ~1918 |
| Rosella Brown | Daughter | — | 9 | ~1931 |
| Martha Brown | Daughter | — | 29 | ~1911 |
| John Brown | Head | — | 60 | ~1880 |
| Allen Brown | Son | — | 7 | ~1933 |
| Eliza Brown | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Knox, Kentucky
Daughter, age 8
Knox, Kentucky · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Knox, Kentucky
Daughter, age 19
Knox, Kentucky · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Knox-County, Kentucky
Daughter, age 29
Knox-County, Kentucky · implied b. ~1911 — 6 household members
| Surname | Brown |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag. Dist. 7 |
| 1935 Residence (County) | Knox |
| Occupation | Junior Clerk |
| Industry | Health Project |
| Class of Worker | GW |
| Hours Worked | 32 |
| Income (1939) | 970 |
| Highest Grade | C 3 |
| 1935 Residence | Same Place |
| 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 Martha Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Brown (~0.92 confidence) and father John Brown (~0.92 confidence) and father John Brown (~0.92 confidence) and mother Eliza Brown (~0.92 confidence) and mother Eliza Brown (~0.92 confidence) and mother Eliza Brown (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Brown
b. ~1876
Source father
● Household
· direct · ~0.92
Father
John Brown
b. ~1880
Source father
● Household
· direct · ~0.92
Father
John Brown
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Eliza Brown
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Eliza Brown
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Eliza Brown
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Martha Brown
Daughter · 1940 · age 29 · b. ~1911 · Kentucky
★ You are viewing this record
Sibling
Rosella Brown
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Brown
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Allen Brown
Sibling · 1940 · age 7
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 — Knox-County, Kentucky
Open full size
1940 US Federal Census — Knox-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01326-01249)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lawrence Sexton | 38 | Head | Miner | Kentucky |
| 2 | Berthie Sexton | 29 | Wife | Seamstress | Kentucky |
| 3 | Harmon Sexton | 11 | Son | — | Kentucky |
| 4 | Russell Sexton | 9 | Son | — | Kentucky |
| 5 | Anna B Sexton | 7 | Daughter | — | Kentucky |
| 6 | Charles Sexton | 4 | Son | — | Kentucky |
| 7 | Howard Sexton | 2 | Son | — | Kentucky |
| 8 | Benny Roe Sexton | 0 | Son | — | Kentucky |
| 9 | Charley D Hubble | 45 | Head | Laborer | Kentucky |
| 10 | Hannah Hubble | 17 | Daughter | — | Kentucky |
| 11 | Andrew Hubble | 15 | Son | New Worker | Kentucky |
| 12 | Hazel Hubble | 6 | Daughter | — | Kentucky |
| 13 | John H Brown | 60 | Head | — | Kentucky |
| 14 | Eliza Brown | 57 | Wife | Laundress | Kentucky |
| 15 | Martha Brown THIS PERSON | 29 | Daughter | Junior Clerk | Kentucky |
| 16 | Nellie Brown | 22 | Daughter | Laundress | Kentucky |
| 17 | Rosella Brown | 9 | Daughter | — | Michigan |
| 18 | Allen Brown | 7 | Son | — | Ohio |
| 19 | Laura Bunch | 65 | Head | — | Kentucky |
| 20 | Richard Bunch | 29 | Son | Trucking | Kentucky |
| 21 | Joe Bunch | 11 | Grand Son | — | Kentucky |
| 22 | Ted Swanson | 35 | Head | Laborer | Kentucky |
| 23 | Elizabeth Swanson | 27 | Wife | — | Kentucky |
| 24 | Evan Swanson | 3 | Son | — | Kentucky |
| 25 | Zola Mae Swanson | 0 | Daughter | — | Kentucky |
| 26 | Peter Woodson | 76 | Head | — | Kentucky |
| 27 | Maude Woodson | 71 | Wife | — | Mississippi |
| 28 | Virgil Hibbard | 34 | Head | Farmer | Kentucky |
| 29 | Minnie Hibbard | 39 | Wife | — | Kentucky |
| 30 | Mary Betty Hibbard | 4 | Daughter | — | Kentucky |
| 31 | Earl Powell | 17 | Son | — | Kentucky |
| 32 | Amelia Powell | 13 | Daughter | — | Kentucky |
| 33 | Nancy Bursh | 45 | Head | Laundress | Kentucky |
| 34 | Ballard Bursh | 25 | Son | Coal Miner | Kentucky |
| 35 | James E Bursh | 21 | Son | Truck Driver | Kentucky |
| 36 | Geneva Bursh | 19 | Daughter | House Keeper | Kentucky |
| 37 | Clara Bursh | 19 | Daughter | New Worker | Kentucky |
| 38 | John L Bursh | 16 | Son | — | Kentucky |
| 39 | Herman Bursh | 12 | Son | — | Kentucky |
| 40 | John Powell | 42 | Head | Coal Miner | Kentucky |
Pedigree Summary
Martha + 3 siblings
Gen 1 · 6 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)