RM
Ruth Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Webster-County, Iowa
Our Model Tree links this Ruth Martin across the 1920, 1930 and 1940 US Censuses in Webster-County, Iowa (XGBoost, ~Confirmed), with identified parents Rosco & Roscoe — first a daughter (b.~1918), then head of a 8-person household.
Age 22
b. ~1918
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Webster-County, Iowa |
| Surname | Martin |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Fort Dodge |
| 1935 Residence (County) | Webster |
| Additional Details | |
| Occupation | bookkeeper |
| Industry | electric co |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 700 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Bookkeeper |
| Township / Ward | Fort Dodge |
| Est. Birth Year | ~1918 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Nancy Martin | Daughter | — | 3 | ~1937 |
| Betty Martin | Daughter | — | 9 | ~1931 |
| Ruth Martin | Daughter | — | 22 | ~1918 |
| Rosco Martin | Head | — | 47 | ~1893 |
| Ray Martin | Son | — | 19 | ~1921 |
| Ralph Martin | Son | — | 13 | ~1927 |
| Robert Martin | Son | — | 18 | ~1922 |
| Emma Martin | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Webster, Iowa
Daughter, age 2
Webster, Iowa · implied b. ~1918 — 4 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 | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Webster, Iowa
Daughter, age 12
Webster, Iowa · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ruth |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Webster-County, Iowa
Daughter, age 22
Webster-County, Iowa · implied b. ~1918 — 8 household members
| Surname | Martin |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Fort Dodge |
| 1935 Residence (County) | Webster |
| Occupation | bookkeeper |
| Industry | electric co |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 700 |
| Highest Grade | H-3 |
| 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 Ruth Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Rosco Martin (~0.92 confidence) and father Roscoe Martin (~0.92 confidence) and mother Emma Martin (~0.92 confidence) and mother Emma Martin (~0.92 confidence) and mother Emma Martin (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Rosco Martin
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Roscoe Martin
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Emma Martin
b. ~1897
Source mother
● Household
· direct · ~0.92
Mother
Emma Martin
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Emma Martin
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Martin
Daughter · 1940 · age 22 · b. ~1918 · Iowa
★ You are viewing this record
Sibling
Betty Martin
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ray Martin
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Martin
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Martin
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Martin
Sibling · 1940 · age 3
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 — Webster-County, Iowa
Open full size
1940 US Federal Census — Webster-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01212-00970)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mable Barnette | 29 | Head | Bookkeeper | Iowa |
| 2 | Blanche Hall | 28 | Lodger | Credit Clerk | South Dakota |
| 3 | Katherine Welch | 72 | Head | — | Iowa |
| 4 | Ann Conway | 40 | Head | Clerk | Iowa |
| 5 | James Conway | 37 | Brother | Manager | Iowa |
| 6 | Lloyd Rittenhouse | 32 | Head | — | Ohio |
| 7 | Charlotte Rittenhouse | 30 | Wife | — | Kansas |
| 8 | Carl Hamiel | 42 | Head | Freight Agent | Iowa |
| 9 | Betty Hamiel | 42 | Wife | — | Kansas |
| 10 | Howard Hamiel | 14 | Son | — | Iowa |
| 11 | John Hamiel | 9 | Son | — | Iowa |
| 12 | Raymond Cravens | 33 | Head | Salesman | Kentucky |
| 13 | Clara Cravens | 22 | Wife | — | Kansas |
| 14 | Rosco Martin | 47 | Head | Conductor | Iowa |
| 15 | Emma Martin | 42 | Wife | — | Iowa |
| 16 | Ruth Martin THIS PERSON | 22 | Daughter | Bookkeeper | Iowa |
| 17 | Ray Martin | 19 | Son | Laborer | Iowa |
| 18 | Robert Martin | 18 | Son | — | Iowa |
| 19 | Ralph Martin | 13 | Son | — | Iowa |
| 20 | Betty Lou Martin | 9 | Daughter | — | Iowa |
| 21 | Nancy Martin | 3 | Daughter | — | Iowa |
| 22 | Alfred Mccardy | 79 | Head | — | Wisconsin |
| 23 | Caroline Mccardy | 59 | Wife | Teacher | Wisconsin |
| 24 | Stanley Mccardy | 30 | Son | — | Wisconsin |
| 25 | Dorothy Poole | 26 | Daughter | Office Worker | Iowa |
| 26 | Caroline Poole | 4 | Granddaughter | — | Iowa |
| 27 | Joan Poole | 3 | Granddaughter | — | Iowa |
| 28 | Elwin Frihe | 27 | Lodger | Laborer | Iowa |
| 29 | Ester Frihe | 22 | Lodger | Clerk | Iowa |
| 30 | Carl Bahl | 24 | Lodger | Clerk | Iowa |
| 31 | Ellen Mueller | 53 | Head | — | Iowa |
| 32 | Mable Mueller | 52 | Daughter | — | Iowa |
| 33 | Lucinda Harvey | 27 | Lodger | Clerk | Iowa |
| 34 | Mary Smalley | 45 | Lodger | Nurse | Iowa |
| 35 | Mickle Coppinger | 48 | Head | — | Ireland |
| 36 | Sophia Coppinger | 43 | Wife | — | Iowa |
| 37 | Alice Coppinger | 18 | Daughter | — | Iowa |
| 38 | Margaret Coppinger | 17 | Daughter | — | Iowa |
| 39 | Dorothy Coppinger | 16 | Daughter | — | Iowa |
| 40 | Helen Coppinger | 13 | Daughter | — | Iowa |
Related Census Records
Pedigree Summary
Ruth + 5 siblings
Gen 1 · 5 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)