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Gertrude Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Gertrude Martin across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 10-person household.
Age 40
b. ~1900
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Martin |
| Given Name | Gertrude |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1900 |
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 Gertrude | Age | Birth yr |
|---|---|---|---|---|
| Thomas Martin | Son | — | 3 | ~1937 |
| James Martin | Son | — | 16 | ~1924 |
| Jane Martin | Daughter | — | 1 | ~1939 |
| Howard Martin | Head | — | 40 | ~1900 |
| Howard Martin | Son | — | 14 | ~1926 |
| Nina Brown | Other | — | 51 | ~1889 |
| Betty Martin | Daughter | — | 6 | ~1934 |
| Gertrude Martin | Spouse | — | 40 | ~1900 |
| Mary Martin | Daughter | — | 18 | ~1922 |
| William Martin | Son | — | 8 | ~1932 |
Census Appearances
1930
Polk, Iowa
Other, age 32
Polk, Iowa · implied b. ~1898 — 43 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Gertrude |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 23 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Spouse, age 40
Polk-County, Iowa · implied b. ~1900 — 10 household members
| Surname | Martin |
| Given Name | Gertrude |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Industry | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Gertrude Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Gertrude Martin
Spouse · 1940 · age 40 · b. ~1900 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01193-00162)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Walter Dobbins | 37 | Head | Asst Mgr | Illinois |
| 42 | Bertha Dobbins | 33 | Wife | — | Iowa |
| 43 | Lawrence Dobbins | 13 | Son | — | Iowa |
| 44 | Robert Dobbins | 9 | Son | — | Iowa |
| 45 | Ronald Dobbins | 7 | Son | — | Iowa |
| 46 | Marilyn Dobbins | 4 | Daughter | — | Iowa |
| 47 | Bonnie Dobbins | 1 | Daughter | — | Iowa |
| 48 | Chester R. Perkins | 44 | Head | Mail Carrier | Iowa |
| 49 | Pearl Perkins | 44 | Wife | — | Iowa |
| 50 | Maxine Perkins | 17 | Daughter | New Worker | Iowa |
| 51 | Mary Jaynes | 80 | Mother | — | Switzerland |
| 52 | Howard Martin | 40 | Head | Proprietor | Iowa |
| 53 | Gertrude Martin THIS PERSON | 40 | Wife | — | Iowa |
| 54 | Mary E. Martin | 18 | Daughter | — | Iowa |
| 55 | James Martin | 16 | Son | — | Iowa |
| 56 | Howard Martin | 14 | Son | — | Iowa |
| 57 | William Martin | 8 | Son | — | Iowa |
| 58 | Betty L. Martin | 6 | Daughter | — | Iowa |
| 59 | Thomas Martin | 3 | Son | — | Iowa |
| 60 | Jane A. Martin | 1 | Daughter | — | Iowa |
| 61 | Nina Brown | 51 | Lodger | Stenographer | Iowa |
| 62 | John W. Canfield | 51 | Head | Postal Clerk | Iowa |
| 63 | Minnie S. Canfield | 55 | Wife | — | Iowa |
| 64 | Fredrick A. Dewenter | 37 | Head | Zone Manager | Indiana |
| 65 | Wilda Dewenter | 32 | Wife | — | Iowa |
| 66 | Martha S. Dewenter | 1 | Daughter | — | Iowa |
| 67 | Mildred Coleman | 20 | Niece | House Keeper | Iowa |
| 68 | Harold L. Davis | 44 | Head | Employee | Iowa |
| 69 | Bessie M. Davis | 38 | Wife | Saleslady | Iowa |
| 70 | E. Lu Davis | 12 | Daughter | — | Iowa |
| 71 | Glenn H. Smith | 35 | Head | General Mgr. | Indiana |
| 72 | Genevieve Smith | 34 | Wife | — | Iowa |
| 73 | Larry Smith | 5 | Son | — | Iowa |
| 74 | Glenn E. Whitlock | 38 | Head | Teacher | Iowa |
| 75 | Ruth Whitlock | 36 | Wife | — | Iowa |
| 76 | Charles Whitlock | 1 | Son | — | Iowa |
| 77 | Leslie Piatt | 40 | Head | Driver | Iowa |
| 78 | Erma Piatt | 45 | Wife | Store Mgr. | Iowa |
| 79 | Michael Hendrickson | 29 | Boarder | Fountain Mgr. | Iowa |
| 80 | Frieda Hendrickson | 25 | Boarder | — | Iowa |
Related Census Records
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)