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Herbert Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Weld-County, Colorado
Our Model Tree links this Herbert Martin across the 1930 and 1940 US Censuses in Weld-County, Colorado (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Weld-County, Colorado |
| Surname | Martin |
| Given Name | Herbert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Weld |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Precinct 10 |
| Est. Birth Year | ~1929 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Herbert | Age | Birth yr |
|---|---|---|---|---|
| Victor Wassermiller | Other | — | 25 | ~1915 |
| Bobby Cook | Son | — | 10 | ~1930 |
| Henry Martin | Son | — | 1 | ~1939 |
| Dorothy Martin | Daughter | — | 9 | ~1931 |
| Henry Martin | Head | — | 36 | ~1904 |
| Herbert Martin | Son | — | 11 | ~1929 |
| Elmer Martin | Son | — | 13 | ~1927 |
| Darlene Martin | Daughter | — | 5 | ~1935 |
| Earl Martin | Son | — | 5 | ~1935 |
| Charlotte Martin | Spouse | — | 30 | ~1910 |
Census Appearances
1930
Weld, Colorado
Son, age 1
Weld, Colorado · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Herbert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Russia |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Weld-County, Colorado
Son, age 11
Weld-County, Colorado · implied b. ~1929 — 10 household members
| Surname | Martin |
| Given Name | Herbert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Weld |
| Highest Grade | No 5 |
| 1935 Residence | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Herbert Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Herbert Martin
Son · 1940 · age 11 · b. ~1929 · Colorado
★ You are viewing this record
Sibling
Earl Martin
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Darlene Martin
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Martin
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bobby Cook
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Martin
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elmer Martin
Sibling · 1940 · age 13
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 — Weld-County, Colorado
Open full size
1940 US Federal Census — Weld-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00481-00478)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Floyd Pfaff | 2 | Son | — | Colorado |
| 2 | Henry Pfaff | 69 | Father | — | Germany |
| 3 | Helen Smith | 15 | Daughter | — | Colorado |
| 4 | Irene Swetzig | 37 | Head | Picking Turkey | Nebraska |
| 5 | Della Swetzig | 11 | Daughter | — | Colorado |
| 6 | Marietta Swetzig | 2 | Daughter | — | Colorado |
| 7 | Lloyd Craven | 31 | Head | Bus Driver | Colorado |
| 8 | Edith Craven | 23 | Wife | — | Colorado |
| 9 | Henry Martin | 36 | Head | Farmer | Colorado |
| 10 | Charlotte Martin | 30 | Wife | — | Russia |
| 11 | Elmer Martin | 13 | Son | — | Colorado |
| 12 | Herbert Martin THIS PERSON | 11 | Son | — | Colorado |
| 13 | Dorothy Martin | 9 | Daughter | — | Colorado |
| 14 | Darlene Martin | 5 | Daughter | — | Colorado |
| 15 | Earl Martin | 5 | Son | — | Colorado |
| 16 | Henry Martin | 1 | Son | — | Colorado |
| 17 | Bobby Joe Cook | 10 | Son | — | Wyoming |
| 18 | Victor Wassermiller | 25 | Hired hand | Farm Hand | Russia |
| 19 | John Jr. Dupper | 24 | Head | Farmer | Colorado |
| 20 | Hazel Dupper | 23 | Wife | — | Nebraska |
| 21 | Allen Dupper | 2 | Daughter | — | Washington |
| 22 | Lavenia Dupper | 1 | Daughter | — | Washington |
| 23 | Sam Dupper | 23 | Brother | Farmer | Colorado |
| 24 | John Kembel | 54 | Head | Farmer | Russia |
| 25 | Mollie Kembel | 40 | Wife | — | Russia |
| 26 | Walter Kembel | 17 | Son | — | Colorado |
| 27 | Edward Kembel | 12 | Son | — | Colorado |
| 28 | Darlene Kembel | 7 | Daughter | — | Colorado |
| 29 | Harry Kembel | 5 | Son | — | Colorado |
| 30 | Mary Wait | 76 | Law | — | Russia |
| 31 | Perry F. Bowser | 57 | Head | Farmer | Missouri |
| 32 | Alpha Bowser | 57 | Wife | — | Illinois |
| 33 | Jacob Wetterle | 40 | Head | Farmer | Russia |
| 34 | Ada Wetterle | 34 | Wife | — | Nebraska |
| 35 | Paul Wetterle | 11 | Son | — | Nebraska |
| 36 | Rosella Wetterle | 8 | Daughter | — | Colorado |
| 37 | Lowell Wetterle | 6 | Son | — | Colorado |
| 38 | Gloria Wetterle | 1 | Daughter | — | Colorado |
| 39 | John Oponovich | 66 | Head | Farmer | Russia |
| 40 | Annie Oponovich | 61 | Wife | — | Poland |
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)