RM
Ruth Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this Ruth Martin across the 1920, 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Martin |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Additional Details | |
| Occupation | Comptometer |
| Industry | Department Store |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 800 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Comptometer |
| Township / Ward | Sioux City |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Ruth Martin | Daughter | — | 24 | ~1916 |
| Ellen Martin | Daughter | — | 28 | ~1912 |
| Edith Martin | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Woodbury, Iowa
Daughter, age 4
Woodbury, Iowa · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Woodbury, Iowa
Daughter, age 14
Woodbury, Iowa · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ruth M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Woodbury-County, Iowa
Daughter, age 24
Woodbury-County, Iowa · implied b. ~1916 — 3 household members
| Surname | Martin |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Occupation | Comptometer |
| Industry | Department Store |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 800 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Ruth Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Martin (~0.92 confidence) and father John Martin (~0.92 confidence) and mother Emma Martin (~0.92 confidence) and mother Edith Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Martin
b. ~1878
Source father
● Household
· direct · ~0.92
Father
John Martin
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Emma Martin
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Edith Martin
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Martin
Daughter · 1940 · age 24 · b. ~1916 · Iowa
★ You are viewing this record
Sibling
Ellen 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 — Woodbury-County, Iowa
Open full size
1940 US Federal Census — Woodbury-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01215-00221)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edith Martin | 52 | Wife | — | Ohio |
| 2 | Ellen Martin | 28 | Daughter | Stenographer | Iowa |
| 3 | Ruth Martin THIS PERSON | 24 | Daughter | Comptometer | Iowa |
| 4 | Ole G. Olsen | 69 | Head | Boiler Maker | Norway |
| 5 | Jennie G. Olsen | 67 | Wife | — | Norway |
| 6 | Charles C. Woodward | 67 | Head | Horse Buyer | Iowa |
| 7 | Ida Woodward | 67 | Wife | — | Michigan |
| 8 | Richard Sieler | 46 | Head | Machinist | South Dakota |
| 9 | Inez Sieler | 46 | Wife | — | South Dakota |
| 10 | Stanley Sieler | 22 | Son | Electrician | South Dakota |
| 11 | William Kavanaugh | 58 | Head | Conductor | Illinois |
| 12 | Francis Kavanaugh | 52 | Wife | — | Nebraska |
| 13 | John Kavanaugh | 20 | Son | — | Iowa |
| 14 | Irvin O. Jacobson | 44 | Head | Furrier | South Dakota |
| 15 | Rose Jacobson | 41 | Wife | — | Iowa |
| 16 | Lois Jacobson | 16 | Daughter | — | Iowa |
| 17 | Robert Jacobson | 13 | Son | — | Iowa |
| 18 | Rose Oliphant | 44 | Head | Wrapper | Nebraska |
| 19 | Josephine Oliphant | 25 | Daughter | Sales Lady | Nebraska |
| 20 | Wyman Forker | 34 | Head | Bar Tender | Iowa |
| 21 | Ester Forker | 34 | Wife | — | Iowa |
| 22 | Wilfred Forker | 15 | Son | — | Iowa |
| 23 | Martin Nelson | 25 | Head | Maintenance Man | Nebraska |
| 24 | Bernice Nelson | 20 | Wife | Waitress | South Dakota |
| 25 | Carrie Nelson | 38 | Mother | Cook | Nebraska |
| 26 | Gordon Nelson | 19 | Brother | Laborer | Iowa |
| 27 | Clara Frentel | 71 | Head | — | Minnesota |
| 28 | Florence Frentel | 45 | Daughter | Tailor | Wisconsin |
| 29 | Mabel Frentel | 42 | Daughter | Service Observer | Wisconsin |
| 30 | Emil Munson | 52 | Head | Carpenter | Nebraska |
| 31 | Ester Munson | 46 | Wife | — | Iowa |
| 32 | Dorothy Munson | 8 | Daughter | — | Iowa |
| 33 | Beatrice Ottillia Munson | 36 | Sister | Bookkeeper | South Dakota |
| 34 | George Erneskin | 68 | Head | Fruit Peddler | Russia |
| 35 | Rose Erneskin | 53 | Wife | — | Russia |
| 36 | Milton Erneskin | 24 | Son | Cattle Buyer | Iowa |
| 37 | Ruth Erneskin | 28 | Daughter | Stenographer | Iowa |
| 38 | Earl Bertrand | 37 | Head | Section Laborer | South Dakota |
| 39 | Gladys Bertrand | 31 | Wife | — | South Dakota |
| 40 | Sylvia Huntley | 62 | Mother in Law | — | Minnesota |
Pedigree Summary
Ruth + 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)