HM
Harry Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Franklin-County, Ohio
Our Model Tree links this Harry Martin across the 1920, 1930 and 1940 US Censuses in Franklin-County, Ohio (XGBoost, ~Confirmed), with identified parents Clarence & Cora — first a head (b.~1898), then head of a 5-person household.
Age 42
b. ~1898
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Franklin-County, Ohio |
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Additional Details | |
| Occupation | Machinist |
| Industry | Timken Bearing |
| Class of Worker | PW |
| Hours Worked | 37 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Machinist |
| Township / Ward | Columbus |
| 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 Harry | Age | Birth yr |
|---|---|---|---|---|
| Harry Martin | Head | — | 42 | ~1898 |
| Clarence Martin | Other | — | 69 | ~1871 |
| Gerald Martin | Son | — | 18 | ~1922 |
| Charles Martin | Son | — | 19 | ~1921 |
| Willia Martin | Spouse | — | 35 | ~1905 |
Census Appearances
1920
Franklin, Ohio
Son, age 20
Franklin, Ohio · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harry E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Clerk |
| Industry | Rail Road |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Franklin, Ohio
Son, age 30
Franklin, Ohio · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harry E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Machinist |
| Industry | Roller Bearing |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Franklin-County, Ohio
Head, age 42
Franklin-County, Ohio · implied b. ~1898 — 5 household members
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Occupation | Machinist |
| Industry | Timken Bearing |
| Class of Worker | PW |
| Hours Worked | 37 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Harry Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Clarence Martin (~0.92 confidence) and mother Cora Martin (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Clarence Martin
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Cora Martin
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Martin
Head · 1940 · age 42 · b. ~1898 · Ohio
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Franklin-County, Ohio
Open full size
1940 US Federal Census — Franklin-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03249-00405)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Tate | 31 | Wife | — | Ohio |
| 2 | J. W. Tate | 10 | Son | — | Ohio |
| 3 | Samuel Tate | 8 | Son | — | Ohio |
| 4 | Annetta Tate | 4 | Daughter | — | Ohio |
| 5 | R. Q. Kimball | 32 | Head | Salesman | Ohio |
| 6 | Lucille Kimball | 27 | Wife | — | Ohio |
| 7 | Betty Kimball | 7 | Daughter | — | Ohio |
| 8 | Robt. Wm. Kimball | 4 | Son | — | Ohio |
| 9 | R. L. Hulse | 34 | Head | Grinder | Ohio |
| 10 | Iris D. Hulse | 32 | Wife | — | Ohio |
| 11 | Betty Jean Hulse | 12 | Daughter | — | Ohio |
| 12 | S. R. Lappe | 42 | Head | Salesman | Ohio |
| 13 | Blanche Lappe | 42 | Wife | — | Ohio |
| 14 | Richard Lappe | 17 | Son | — | Ohio |
| 15 | Paul Lappe | 11 | Son | — | Ohio |
| 16 | S. L. Sterner | 49 | Head | Cabinet Maker | Ohio |
| 17 | Cath. Sterner | 41 | Wife | — | Ohio |
| 18 | Marg. Sterner | 17 | Daughter | New Worker | Ohio |
| 19 | Albe Sterner | 15 | Daughter | — | Ohio |
| 20 | Charles Thompson | 45 | Lodger | Die Sinker | Ohio |
| 21 | S. W. Heckert | 43 | Head | Mechanic | Ohio |
| 22 | Helen Heckert | 34 | Wife | Office Manager | Ohio |
| 23 | Virginia Heckert | 11 | Daughter | — | Ohio |
| 24 | Mabel Peelle | 59 | Sister-in-law | — | Ohio |
| 25 | O. E. Laybourn | 52 | Head | Foreman | Ohio |
| 26 | L. D. Laybourn | 55 | Wife | — | Ohio |
| 27 | Glenn Laybourn | 28 | Son | Helper | Ohio |
| 28 | Ralph Beale | 20 | Nephew | Book-Keeper | Ohio |
| 29 | Thad. Pyle | 43 | Head | Machinist | Ohio |
| 30 | Eva Pyle | 42 | Wife | Buyer | Ohio |
| 31 | Dorothy Pierce | 23 | Daughter | Book-Keeper | Ohio |
| 32 | Thos. Pierce | 1 | G. Son | — | Ohio |
| 33 | F. W. Shart | 26 | Head | — | Ohio |
| 34 | Florence Shart | 24 | Wife | — | Ohio |
| 35 | Elsa Kimball | 54 | Lodger | Machinist | Ohio |
| 36 | Harry Martin THIS PERSON | 42 | Head | Machinist | Ohio |
| 37 | Willia Martin | 35 | Wife | — | Ohio |
| 38 | Charles Martin | 19 | Son | Tool Maker | Ohio |
| 39 | Gerald Martin | 18 | Son | New Worker | Ohio |
| 40 | Clarence Martin | 69 | Father | Retired Conductor | Ohio |
Pedigree Summary
Harry
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)