HM
Harold Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jackson-County, Ohio
Our Model Tree links this Harold Martin across the 1920, 1930 and 1940 US Censuses in Jackson-County, Ohio (XGBoost, ~Confirmed), with identified parents Abra & Albert — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Ohio |
| Surname | Martin |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Jackson City |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Occupation | Clerk |
| Industry | Store Iron Furnace |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 936 |
| Highest Grade | No H-4 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Clerk |
| Township / Ward | Jackson City |
| Est. Birth Year | ~1918 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Richard Martin | Son | — | 14 | ~1926 |
| Rosemary Martin | Daughter | — | 17 | ~1923 |
| Alex Martin | Head | — | 48 | ~1892 |
| Laura Martin | Spouse | — | 46 | ~1894 |
| Harold Martin | Son | — | 22 | ~1918 |
Census Appearances
1920
Jackson, Ohio
Son, age 2
Jackson, Ohio · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Jackson, Ohio
Son, age 12
Jackson, Ohio · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Jackson-County, Ohio
Son, age 22
Jackson-County, Ohio · implied b. ~1918 — 5 household members
| Surname | Martin |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Jackson City |
| 1935 Residence (County) | Jackson |
| Occupation | Clerk |
| Industry | Store Iron Furnace |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 936 |
| Highest Grade | No H-4 |
| 1935 Residence | Same House |
| 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 Harold Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Abra Martin (~0.92 confidence) and father Albert Martin (~0.92 confidence) and father Alex Martin (~0.92 confidence) and mother Laura Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Abra Martin
b. ~1892
Source father
● Household
· direct · ~0.92
Father
Albert Martin
b. ~1892
Source father
● Household
· direct · ~0.92
Father
Alex Martin
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Laura Martin
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Martin
Son · 1940 · age 22 · b. ~1918 · Ohio
★ You are viewing this record
Sibling
Richard Martin
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosemary Martin
Sibling · 1940 · age 17
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 — Jackson-County, Ohio
Open full size
1940 US Federal Census — Jackson-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03089-00408)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marie Blackburn | 47 | Wife | — | Ky |
| 42 | Jessie Dewald | 23 | Daughter | — | Ky |
| 43 | Freida Y. Dewald | 4 | Granddaughter | — | — |
| 44 | Benjamin F. Craft | 53 | Brother-in-law | Laborer | Ky |
| 45 | Emma Smith | 64 | Head | Cook | Ohio |
| 46 | Etta E. Smith | 71 | Sister-in-law | — | Ohio |
| 47 | Kathleen Long | 14 | Granddaughter | — | Ohio |
| 48 | Alex L. Martin | 48 | Head | Store Manager | Ohio |
| 49 | Laura Martin | 46 | Wife | — | Ohio |
| 50 | Harold Martin THIS PERSON | 22 | Son | Clerk | Ohio |
| 51 | Rosemary Martin | 17 | Daughter | — | Ohio |
| 52 | Richard Martin | 14 | Son | — | Ohio |
| 53 | Ray G. Ray | 24 | Head | Driver | Ohio |
| 54 | Alma F. Ray | 22 | Wife | — | Ohio |
| 55 | Donald Ray | 3 | Son | — | — |
| 56 | Richard Ray | 1 | Son | — | — |
| 57 | Joseph J. Oty | 39 | Head | Laborer | Ohio |
| 58 | Ethel Oty | 33 | Wife | — | Ohio |
| 59 | Jewell Oty | 13 | Daughter | — | Ohio |
| 60 | Billy J. Oty | 7 | Son | — | Ohio |
| 61 | Joseph S. Perkins | 48 | Head | Laborer | Ohio |
| 62 | Effie Perkins | 43 | Wife | — | Ohio |
| 63 | Charles Perkins | 23 | Son | Clerk | Ohio |
| 64 | Olen Perkins | 21 | Son | — | Ohio |
| 65 | Frances Perkins | 20 | Daughter | — | Ohio |
| 66 | Dorothy Perkins | 16 | Daughter | House Work | Ohio |
| 67 | Edgar Perkins | 15 | Son | — | Ohio |
| 68 | Glenna Perkins | 12 | Daughter | — | Ohio |
| 69 | Milton Freeland | 38 | Head | Clerk | Ohio |
| 70 | Grace Freeland | 33 | Wife | — | Ohio |
| 71 | Ethel M. Freeland | 14 | Daughter | — | Ohio |
| 72 | Betty L. Freeland | 12 | Daughter | — | Ohio |
| 73 | James L. Freeland | 10 | Son | — | Ohio |
| 74 | Grace C. Freeland | 6 | Daughter | — | Ohio |
| 75 | Richard H. Freeland | 4 | Son | — | — |
| 76 | Leila F. Freeland | 1 | Daughter | — | — |
| 77 | Williams F. Rice | 57 | Head | Coal Miner | Ohio |
| 78 | Minnie F. Rice | 58 | Wife | — | Ohio |
| 79 | Harvey Rice | 25 | Son | Meat Packing Co. | Michigan |
| 80 | Cora M. Emmons | 14 | Granddaughter | — | Ohio |
Related Census Records
Pedigree Summary
Harold + 2 siblings
Gen 1 · 4 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)