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Harold Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Nodaway-County, Missouri
Our Model Tree links this Harold Martin across the 1920, 1930 and 1940 US Censuses in Nodaway-County, Missouri (XGBoost, ~Confirmed), with identified parents Albert & Ada — first a son (b.~1917), then head of a 7-person household.
Age 23
b. ~1917
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Nodaway-County, Missouri |
| Surname | Martin |
| Given Name | Harold AB |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Polk Township |
| 1935 Residence (County) | Nodaway |
| Additional Details | |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Polk Township |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Irvin Thompson | Other | — | 18 | ~1922 |
| Harold Martin | Son | — | 23 | ~1917 |
| Luther Bernard | Other | — | 36 | ~1904 |
| William Martin | Son | — | 17 | ~1923 |
| Albert Martin | Head | — | 54 | ~1886 |
| Ada Martin | Spouse | — | 49 | ~1891 |
| Carrie Martin | Daughter | — | 13 | ~1927 |
Census Appearances
1920
Nodaway, Missouri
Son, age 3
Nodaway, Missouri · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Herald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Nodaway, Missouri
Son, age 13
Nodaway, Missouri · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harold J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Nodaway-County, Missouri
Son, age 23
Nodaway-County, Missouri · implied b. ~1917 — 7 household members
| Surname | Martin |
| Given Name | Harold AB |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Polk Township |
| 1935 Residence (County) | Nodaway |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Albert Martin (~0.92 confidence) and mother Ada Martin (~0.92 confidence) and mother Ida Martin (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Martin
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Ada Martin
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Ida Martin
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Martin
Son · 1940 · age 23 · b. ~1917 · Missouri
★ You are viewing this record
Sibling
Carrie Martin
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William 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 — Nodaway-County, Missouri
Open full size
1940 US Federal Census — Nodaway-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02134-00629)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mona Hilenback | 6 | daughter | — | Missouri |
| 42 | Perry F Holbrook | 51 | Head | Farmer | Missouri |
| 43 | Ada B Holbrook | 45 | wife | — | Missouri |
| 44 | Robert Lee Holbrook | 12 | son | — | Missouri |
| 45 | James Ab Holbrook | 23 | son | 6 | Missouri |
| 46 | Winifred Ab Holbrook | 20 | daughter | 6 | Missouri |
| 47 | Frank Holbrook | 80 | Father | — | Missouri |
| 48 | Nadine Arney | 25 | lodger | Teacher | Missouri |
| 49 | Earl R Mcclurg | 43 | Head | Farmer | Missouri |
| 50 | Margaret L Mcclurg | 35 | wife | — | Missouri |
| 51 | Lloyd R Mcclurg | 17 | son | 6 | Missouri |
| 52 | Cleta R Mcclurg | 16 | daughter | 6 | Missouri |
| 53 | Ralph Mcclurg | 14 | son | — | Missouri |
| 54 | Wilma J Mcclurg | 8 | daughter | — | Missouri |
| 55 | Letha L Mcclurg | 1 | daughter | — | Missouri |
| 56 | John P Mcclurg | 73 | Head | Farmer | Illinois |
| 57 | Neva Mcclurg | 40 | daughter | — | Missouri |
| 58 | Thomas L Mcclurg | 69 | Head | — | Missouri |
| 59 | Sarah E Mcclurg | 69 | wife | — | Kansas |
| 60 | Milo Mcclurg | 31 | son | Farmer | Missouri |
| 61 | Henry T Carmichael | 76 | Head | — | Illinois |
| 62 | Laura Carmichael | 61 | wife | — | Indiana |
| 63 | Albert S Martin | 54 | Head | Farmer | Missouri |
| 64 | Ada E Martin | 49 | wife | — | Iowa |
| 65 | Harold Ab Martin THIS PERSON | 23 | son | — | Missouri |
| 66 | William Martin | 17 | son | — | Missouri |
| 67 | Carrie M Martin | 13 | daughter | — | Missouri |
| 68 | Irvin Thompson | 18 | lodger | Farm Laborer | Missouri |
| 69 | Luther Bernard | 36 | lodger | Farm Laborer | Missouri |
| 70 | Floyd A Pope | 46 | Head | Salesman | Missouri |
| 71 | Mary M Pope | 46 | wife | — | Missouri |
| 72 | Floyd Jr Pope | 20 | son | Buyer | Missouri |
| 73 | Earl F Pope | 16 | son | Delivery Boy | Missouri |
| 74 | Harold J Pope | 14 | son | Delivery Boy | Missouri |
| 75 | John L Pope | 12 | son | — | Missouri |
| 76 | Mary Elizabeth Pope | 10 | daughter | — | Missouri |
| 77 | Margaret Dougan | 67 | Mother-in-law | — | Kansas |
| 78 | Joseph Jr Peters | 33 | lodger | Salesman | North Dakota |
| 79 | Vilas M Walker | 24 | Head | Deliveryman | Missouri |
| 80 | Gertrude A Walker | 25 | wife | — | Missouri |
Related Census Records
Pedigree Summary
Harold + 2 siblings
Gen 1 · 3 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)