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Harold Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Logan-County, Illinois
Our Model Tree links this Harold Martin across the 1920, 1930 and 1940 US Censuses in Logan-County, Illinois (XGBoost, ~Confirmed), with identified parents Ida & Ida — first a son (b.~1916), then head of a 7-person household.
Age 24
b. ~1916
Male
Son
Born: Nebraska
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Logan-County, Illinois |
| Surname | Martin |
| Given Name | Harold W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | East Lincoln Township |
| 1935 Residence (County) | Logan |
| Additional Details | |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 22 |
| Income (1939) | 230 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Occupation | Farm Laborer |
| Township / Ward | East Lincoln Township |
| Est. Birth Year | ~1916 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Blanche Martin | Daughter | — | 20 | ~1920 |
| Glenn Martin | Son | — | 28 | ~1912 |
| Harold Martin | Son | — | 24 | ~1916 |
| Mabel Martin | Daughter | — | 23 | ~1917 |
| Rose Martin | Daughter | — | 21 | ~1919 |
| Ida Martin | Head | — | 57 | ~1883 |
| Marie Martin | Daughter | — | 33 | ~1907 |
Census Appearances
1920
Logan, Illinois
Son, age 4
Logan, Illinois · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harold W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1930
Logan, Illinois
Son, age 14
Logan, Illinois · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harold W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Logan-County, Illinois
Son, age 24
Logan-County, Illinois · implied b. ~1916 — 7 household members
| Surname | Martin |
| Given Name | Harold W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | East Lincoln Township |
| 1935 Residence (County) | Logan |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 22 |
| Income (1939) | 230 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Ida Martin (~0.92 confidence) and mother Ida Martin (~0.92 confidence) and mother Ida Martin (~0.92 confidence) and father Louis Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ida Martin
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Ida Martin
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Ida Martin
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
Louis Martin
b. ~1885
Source father
● Household
· direct · ~0.92
This person
Anchor record
Harold Martin
Son · 1940 · age 24 · b. ~1916 · Illinois
★ You are viewing this record
Sibling
Marie Martin
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Blanche Martin
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Martin
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Martin
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glenn Martin
Sibling · 1940 · age 28
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 — Logan-County, Illinois
Open full size
1940 US Federal Census — Logan-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00838-00552)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John G Meishner | 73 | Head | Farmer | Germany |
| 42 | Mary Meishner | 66 | Wife | — | Illinois |
| 43 | Anna Meishner | 44 | Daughter | Housekeeper | Illinois |
| 44 | Emma Meishner | 40 | Daughter | Housekeeper | Illinois |
| 45 | Matilda Meishner | 37 | Daughter | Housekeeper | Illinois |
| 46 | Clara Meishner | 33 | Daughter | Housekeeper | Illinois |
| 47 | William Brown | 69 | Head | Farmer | Illinois |
| 48 | Adam J Snyder | 44 | Head | Farmer | Indiana |
| 49 | Ella Snyder | 40 | Wife | — | Illinois |
| 50 | Mae Snyder | 21 | Daughter | Housekeeper | Illinois |
| 51 | Betty Snyder | 14 | Daughter | — | Illinois |
| 52 | Melvin Snyder | 11 | Son | — | Illinois |
| 53 | Robert Snyder | 9 | Son | — | Illinois |
| 54 | Kenneth Snyder | 8 | Son | — | Illinois |
| 55 | Patricia Snyder | 4 | Daughter | — | Illinois |
| 56 | Clarence Snyder | 3 | Son | — | Illinois |
| 57 | John C Rohrer | 37 | Head | Farmer | Illinois |
| 58 | Irene Rohrer | 41 | Wife | — | Illinois |
| 59 | Marilyn Rohrer | 14 | Daughter | — | Illinois |
| 60 | John R Rohrer | 12 | Son | — | Illinois |
| 61 | Dolores Rohrer | 11 | Daughter | — | Illinois |
| 62 | Henry Rohrer | 37 | Head | Farmer | Illinois |
| 63 | Ruth Rohrer | 38 | Wife | — | Illinois |
| 64 | Arthur Rohrer | 8 | Son | — | Illinois |
| 65 | Joseph Kuenzi | 22 | Head | Farmer | Illinois |
| 66 | Dorothy Kuenzi | 23 | Wife | — | Illinois |
| 67 | Joseph Kroos | 34 | Head | Farmer | Illinois |
| 68 | Florence Kroos | 30 | Wife | — | Illinois |
| 69 | Alma (A) Kroos | 28 | Daughter | Bookkeeper | Illinois |
| 70 | Ida C Martin | 57 | Head | Farmer | Illinois |
| 71 | Marie Martin | 33 | Daughter | Teacher | Illinois |
| 72 | Glenn C Martin | 28 | Son | Laborer | Nebraska |
| 73 | Harold W Martin THIS PERSON | 24 | Son | Farm Laborer | Nebraska |
| 74 | Mabel L Martin | 23 | Daughter | Stenographer | Nebraska |
| 75 | Rose (A) Martin | 21 | Daughter | Trained Nurse | Illinois |
| 76 | Blanche Martin | 20 | Daughter | Teacher | Illinois |
| 77 | Vincent Moisier | 43 | Head | Farmer | Illinois |
| 78 | Mildred Moisier | 35 | Wife | — | Illinois |
| 79 | Jeanette Moisier | 4 | Daughter | — | Illinois |
| 80 | Elmer E Rohrer | 32 | Head | Farmer | Illinois |
Related Census Records
Pedigree Summary
Harold + 5 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)