HM
Harold Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Licking-County, Ohio
Our Model Tree links this Harold Martin across the 1920, 1930 and 1940 US Censuses in Licking-County, Ohio (XGBoost, ~Confirmed), with identified parents Ella & Harold — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Licking-County, Ohio |
| Surname | Martin |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Hartford T. |
| 1935 Residence (County) | Licking |
| Additional Details | |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 48 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Farm Laborer |
| Township / Ward | Hartford T |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Harold Martin | Son | — | 21 | ~1919 |
| Hazel Martin | Spouse | — | 44 | ~1896 |
| Carey Martin | Head | — | 46 | ~1894 |
| Jack Martin | Son | — | 17 | ~1923 |
Census Appearances
1920
Licking, Ohio
Son, age 2
Licking, Ohio · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harold R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Licking, Ohio
Son, age 12
Licking, Ohio · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martins |
| Given Name | Harold B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Licking-County, Ohio
Son, age 21
Licking-County, Ohio · implied b. ~1919 — 4 household members
| Surname | Martin |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Hartford T. |
| 1935 Residence (County) | Licking |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 48 |
| Highest Grade | H 4 |
| 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 Harold Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Ella Martin (~0.92 confidence) and father Harold Martin (~0.92 confidence) and father Carey Martin (~0.92 confidence) and mother Hazel Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ella Martin
b. ~1889
Source mother
● Household
· direct · ~0.92
Father
Harold Martin
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Carey Martin
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Hazel Martin
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Martin
Son · 1940 · age 21 · b. ~1919 · Ohio
★ You are viewing this record
Sibling
Jack 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 — Licking-County, Ohio
Open full size
1940 US Federal Census — Licking-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03098-00314)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James Montgomery | 36 | Head | Farmer | Ohio |
| 42 | Dorothy Montgomery | 28 | Wife | — | Ohio |
| 43 | Wm Montgomery | 13 | Son | — | Ohio |
| 44 | James Montgomery | 6 | Son | — | Ohio |
| 45 | Harry Roberts | 38 | Head | Farmer | Ohio |
| 46 | Margaret Roberts | 25 | Wife | — | Ohio |
| 47 | Harry Jr Roberts | 5 | Son | — | Ohio |
| 48 | Jasper Thompson | 51 | Head | Farmer | Ohio |
| 49 | Elizabeth Thompson | 58 | Wife | — | Ohio |
| 50 | Howard Cramer | 66 | Head | Farmer | Ohio |
| 51 | Laura Cramer | 63 | Wife | — | Ohio |
| 52 | Betty Edwards | 9 | Granddaughter | — | Virginia |
| 53 | Charles Cramer | 36 | Head | Farmer | Ohio |
| 54 | Ruth Cramer | 28 | Wife | — | Ohio |
| 55 | Gladys Cramer | 7 | Daughter | — | Ohio |
| 56 | Glenn Cramer | 4 | Son | — | Ohio |
| 57 | Robert Cramer | 3 | Son | — | Ohio |
| 58 | Lennis Freas | 47 | Head | Farmer | Ohio |
| 59 | Faye Freas | 48 | Wife | — | Ohio |
| 60 | Herbert Edwards | 43 | Head | Farmer | Ohio |
| 61 | Nellie Edwards | 38 | Wife | — | Ohio |
| 62 | Dorothy Edwards | 14 | Daughter | — | Ohio |
| 63 | George Edwards | 11 | Son | — | Ohio |
| 64 | Raymond Edwards | 5 | Son | — | Ohio |
| 65 | Frank Charles | 68 | Head | Farmer | Ohio |
| 66 | Phobe Charles | 64 | Wife | — | Ohio |
| 67 | Carson Hughes | 55 | Lodger | — | Ohio |
| 68 | John Baker | 39 | Head | Farmer | Ohio |
| 69 | Gail Baker | 37 | Wife | — | Ohio |
| 70 | Ellis Dysart | 38 | Head | Farmer | Ohio |
| 71 | Louise Dysart | 37 | Wife | — | Ohio |
| 72 | Lafayette Milligan | 54 | Head | Farmer | Ohio |
| 73 | Sarah Milligan | 52 | Wife | — | Ohio |
| 74 | James Milligan | 31 | Son | Farmer | Ohio |
| 75 | Louise Milligan | 25 | Daughter-in-law | — | Ohio |
| 76 | Carey Martin | 46 | Head | Farmer | Ohio |
| 77 | Hazel Martin | 44 | Wife | — | Ohio |
| 78 | Harold Martin THIS PERSON | 21 | Son | Farm Laborer | Ohio |
| 79 | Jack Martin | 17 | Son | — | Ohio |
| 80 | Clara Patton | 42 | Head | — | Ohio |
Pedigree Summary
Harold + 1 sibling
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)