WM
William Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Spencer-County, Kentucky
Our Model Tree links this William Martin across the 1920, 1930 and 1940 US Censuses in Spencer-County, Kentucky (XGBoost, ~Confirmed), with identified parents James & Sarah — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Spencer-County, Kentucky |
| Surname | Martin |
| Given Name | William B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag Dist 1 Taylorsville |
| 1935 Residence (County) | Spencer |
| Additional Details | |
| Occupation | File Clerk |
| Industry | Draing Office |
| Class of Worker | GW |
| Hours Worked | 14 |
| Income (1939) | 175 |
| Highest Grade | C-2 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | File Clerk |
| Township / Ward | Mag Dist 1 Taylorsville |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Helen Martin | Daughter | — | 19 | ~1921 |
| Anna Martin | Daughter | — | 23 | ~1917 |
| James Martin | Head | — | 49 | ~1891 |
| William Martin | Son | — | 21 | ~1919 |
| Raymond Martin | Son | — | 26 | ~1914 |
| Wilford Martin | Son | — | 9 | ~1931 |
| Sarah Martin | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Spencer, Kentucky
Son, age
Spencer, Kentucky · implied b. ~1920 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | William B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Spencer, Kentucky
Son, age 11
Spencer, Kentucky · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | William B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Spencer-County, Kentucky
Son, age 21
Spencer-County, Kentucky · implied b. ~1919 — 7 household members
| Surname | Martin |
| Given Name | William B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag Dist 1 Taylorsville |
| 1935 Residence (County) | Spencer |
| Occupation | File Clerk |
| Industry | Draing Office |
| Class of Worker | GW |
| Hours Worked | 14 |
| Income (1939) | 175 |
| Highest Grade | C-2 |
| 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 William Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Martin (~0.92 confidence) and mother Sarah Martin (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Martin
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Sarah Martin
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Martin
Son · 1940 · age 21 · b. ~1919 · Kentucky
★ You are viewing this record
Sibling
Wilford Martin
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Martin
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Martin
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Martin
Sibling · 1940 · age 26
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 — Spencer-County, Kentucky
Open full size
1940 US Federal Census — Spencer-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01357-00357)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James W. Martin | 49 | Head | Farmer | Kentucky |
| 2 | Sarah K. Martin | 47 | Wife | — | Kentucky |
| 3 | Raymond T. Martin | 26 | Son | Farmer | Kentucky |
| 4 | Anna May Martin | 23 | Daughter | Teacher | Kentucky |
| 5 | William B. Martin THIS PERSON | 21 | Son | File Clerk | Kentucky |
| 6 | Helen Louise Martin | 19 | Daughter | Librarian | Kentucky |
| 7 | Wilford Leo Martin | 9 | Son | — | Kentucky |
| 8 | Joe R. Burkhead | 23 | Head | Farmer | Kentucky |
| 9 | Mary A. Burkhead | 21 | Wife | — | Kentucky |
| 10 | Amanda Hume | 66 | Head | — | Kentucky |
| 11 | John F. Hume | 38 | Son | — | Kentucky |
| 12 | Kathrine Hume | 24 | Daughter | Teacher | Kentucky |
| 13 | Martha E. Hume | 23 | Daughter | Teacher | Kentucky |
| 14 | Ben Jeff. Hume | 26 | Son | Teacher | Kentucky |
| 15 | Ida Turner Hume | 25 | Wife | — | Kentucky |
| 16 | James R. Porter | 55 | Head | Farmer | Kentucky |
| 17 | Sarah Porter | 38 | Wife | — | Kentucky |
| 18 | Cecil T. Porter | 14 | Son | — | Kentucky |
| 19 | Ray Porter | 6 | Son | — | Kentucky |
| 20 | Aubrey Brookshire | 43 | Head | Farmer | Kentucky |
| 21 | Tina Brookshire | 40 | Wife | — | Kentucky |
| 22 | Frances Brookshire | 20 | Daughter | — | Kentucky |
| 23 | Lena Brookshire | 19 | Daughter | — | Kentucky |
| 24 | Omar Brewer | 38 | Head | Farmer | Kentucky |
| 25 | Myrtle Brewer | 32 | Wife | — | Kentucky |
| 26 | James A. Brewer | 11 | Son | — | Kentucky |
| 27 | Daphne Brewer | 4 | Daughter | — | Kentucky |
| 28 | Loretta Brewer | 1 | Daughter | — | Kentucky |
| 29 | James E. Brewer | 77 | Father | — | Kentucky |
| 30 | Jesse Williams | 17 | Head | Farmer | Kentucky |
| 31 | Thomas Williams | 12 | Brother | — | Kentucky |
| 32 | Paul Williams | 9 | Brother | — | Kentucky |
| 33 | Alvin Williams | 4 | Brother | — | Kentucky |
| 34 | Alpha Williams | 44 | Mother | — | Kentucky |
| 35 | Gus Williams | 31 | Head | Farmer | Kentucky |
| 36 | Jim Lou Williams | 26 | Wife | — | Kentucky |
| 37 | Martha Williams | 70 | Mother | — | Kentucky |
| 38 | Alvin Jewell | 54 | Head | Farmer | Kentucky |
| 39 | Ethel Jewell | 51 | Wife | — | Kentucky |
| 40 | Elmer B. Jewell | 25 | Son | Farmer | Kentucky |
Pedigree Summary
William + 4 siblings
Gen 1 · 2 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)