WM
Walter Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this Walter Martin across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed), with identified parents John & Mary — first a son (b.~1898), then head of a 5-person household.
Age 42
b. ~1898
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Martin |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Cincinnati |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Occupation | Lathe Hand |
| Industry | Machine Shop |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1300 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Lathe Hand |
| Township / Ward | Cincinnati |
| Est. Birth Year | ~1898 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Walter | Age | Birth yr |
|---|---|---|---|---|
| Julia Martin | Daughter | — | 35 | ~1905 |
| John Martin | Head | — | 32 | ~1908 |
| Cora Mueller | Other | — | 62 | ~1878 |
| George Martin | Son | — | 33 | ~1907 |
| Walter Martin | Son | — | 42 | ~1898 |
Census Appearances
1920
Hamilton, Ohio
Son, age 21
Hamilton, Ohio · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Hamilton, Ohio
Son, age 32
Hamilton, Ohio · implied b. ~1898 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Ohio |
| Occupation | Machinist |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Hamilton-County, Ohio
Son, age 42
Hamilton-County, Ohio · implied b. ~1898 — 5 household members
| Surname | Martin |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Cincinnati |
| 1935 Residence (County) | Hamilton |
| Occupation | Lathe Hand |
| Industry | Machine Shop |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1300 |
| Highest Grade | No 8 |
| 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 Walter Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Martin (~0.92 confidence) and mother Mary Martin (~0.92 confidence) and mother Maud Martin (~0.92 confidence) and mother Catherine Martin (~0.44 confidence) and father John Martin (~0.50 confidence). The pedigree spans 2 generations with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.74
Father
John Martin
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Mary Martin
b. ~1869
Source mother
● Household
· direct · ~0.92
Mother
Maud Martin
b. ~1869
Source mother
● Household
· direct · ~0.92
Mother
Catherine Martin
b. ~1883
Source father>mother
● Household
· direct · ~0.44
Father
John Martin
b. ~1908
Source father
● Household
· direct · ~0.5
This person
Anchor record
Walter Martin
Son · 1940 · age 42 · b. ~1898 · Ohio
★ You are viewing this record
Sibling
George Martin
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Martin
Sibling · 1940 · age 35
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 — Hamilton-County, Ohio
Open full size
1940 US Federal Census — Hamilton-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03200-00764)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Norma D Mach | 30 | Wife | Housewife | Ohio |
| 42 | Bernice Mach | 9 | Daughter | — | Ohio |
| 43 | Eugene Mach | 4 | Son | — | Ohio |
| 44 | Ida B Mcclain | 59 | Head | Housewife | Ohio |
| 45 | Elsie Thomas | 40 | Daughter | Recreation Leader | Ohio |
| 46 | Evelyn Thomas | 15 | Granddaughter | — | Michigan |
| 47 | Frank Weil | 34 | Head | Blacksmith Apprentice | Ohio |
| 48 | Lillian G Weil | 33 | Wife | Housewife | Ohio |
| 49 | Frank Jr Weil | 9 | Son | — | Ohio |
| 50 | Catherine Risch | 63 | Head | Housewife | Ohio |
| 51 | Franklin Risch | 32 | Son | Commercial | Ohio |
| 52 | Benjamin F Sheppard | 56 | Head | Shoe Service | Ohio |
| 53 | Esther A Sheppard | 36 | Daughter | Housewife | Ohio |
| 54 | Mildred Sheppard | 34 | Daughter | Asst Cashier | Ohio |
| 55 | Mary Sheppard | 84 | Mother | — | Ohio |
| 56 | Stella Gilpin | 65 | Aunt | Assembler | Ohio |
| 57 | Nicholas Schlechtingen | 65 | Head | Cutter | Ohio |
| 58 | Ida Schlechtingen | 55 | Wife | Housewife | Ohio |
| 59 | Clarence Schlechtingen | 26 | Head | Compositor | Ohio |
| 60 | Elizabeth Schlechtingen | 27 | Wife | Housewife | Ohio |
| 61 | Shirley Schlechtingen | 6 | Daughter | — | Ohio |
| 62 | Janice Schlechtingen | 4 | Daughter | — | Ohio |
| 63 | Joseph Sterns | 70 | Head | Stationary Engineer | France |
| 64 | Marie Sterns | 67 | Wife | Housewife | Ireland |
| 65 | Walter Sterns | 49 | Roomer | General Mach | Ohio |
| 66 | Woodrow W Wilson | 23 | Roomer | Factory Employee | Kentucky |
| 67 | John Martin | 32 | Head | Engineer | Kentucky |
| 68 | Walter Martin THIS PERSON | 42 | Son | Lathe Hand | Kentucky |
| 69 | George R Martin | 33 | Son | — | Ohio |
| 70 | Julia E Martin | 35 | Daughter | — | Ohio |
| 71 | Cora T Mueller | 62 | Housekeeper | Housekeeper | Kentucky |
| 72 | James Mctey | 22 | Head | Butcher | Ohio |
| 73 | Ruth Mctey | 22 | Wife | Housewife | Kentucky |
| 74 | Patricia Jean Mctey | 1 | Daughter | — | Ohio |
| 75 | Thomas R Clark | 45 | Head | Vulcanizer | Kentucky |
| 76 | Wesley Clark | 41 | Wife | Housewife | Kentucky |
| 77 | Robert Clark | 16 | Son | — | Kentucky |
| 78 | Minnie Clark | 15 | Daughter | — | Kentucky |
| 79 | Eugene Clark | 14 | Son | — | Kentucky |
| 80 | Orville Clark | 12 | Son | — | Kentucky |
Related Census Records
Pedigree Summary
Walter + 2 siblings
Gen 1 · 4 parents
~0.81
Gen 2 · 1 grandparents
~0.44
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)