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Ruth Gray — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Ruth Gray across the 1910, 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Frank & George — first a spouse (b.~1902), then head of a 4-person household.
Age 38
b. ~1902
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Gray |
| Given Name | Ruth |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines city |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1902 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Paul Gray | Head | — | 44 | ~1896 |
| James Gray | Son | — | 12 | ~1928 |
| Ruth Gray | Spouse | — | 38 | ~1902 |
| Thomas Gray | Son | — | 9 | ~1931 |
Census Appearances
1910
Polk, Iowa
Daughter, age 8
Polk, Iowa · implied b. ~1902 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gray |
| Given Name | Rhea L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Polk, Iowa
Daughter, age 17
Polk, Iowa · implied b. ~1903 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gray |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 28
Polk, Iowa · implied b. ~1902 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gray |
| Given Name | Ruth M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Student |
| Industry | University |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Spouse, age 38
Polk-County, Iowa · implied b. ~1902 — 4 household members
| Surname | Gray |
| Given Name | Ruth |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines city |
| 1935 Residence (County) | Polk |
| Highest Grade | Hs 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 Ruth Gray across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Gray (~0.92 confidence) and father George Gray (~0.92 confidence) and mother Lillian Gray (~0.92 confidence) and mother Margaret Gray (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Gray
b. ~1874
Source father
● Household
· direct · ~0.92
Father
George Gray
b. ~1861
Source father
● Household
· direct · ~0.92
Mother
Lillian Gray
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Margaret Gray
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Gray
Spouse · 1940 · age 38 · b. ~1902 · Iowa
★ You are viewing this record
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
37 people indexed on this census page (nara:1940:m-t0627-01194-00482)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Allie Baker | 64 | Head | Operator Street Car | Iowa |
| 42 | Anna M Baker | 62 | Wife | — | Iowa |
| 43 | Pauline Toaffer|Toeffer | 84 | Head | — | Germany |
| 44 | Olga M Toaffer|Toeffer | 47 | Daughter | Artificer Flowers | Iowa |
| 45 | Paul J Gray | 44 | Head | Truck Driver | Iowa |
| 46 | Ruth Gray THIS PERSON | 38 | Wife | — | Iowa |
| 47 | James M Gray | 12 | Son | — | Iowa |
| 48 | Thomas P Gray | 9 | Son | — | Iowa |
| 51 | Vernon L Bishop | 41 | Head | Steam Fitter | Iowa |
| 52 | Gladys L Bishop | 38 | Wife | — | Oklahoma |
| 53 | Boyde L Bishop | 11 | Son | — | Iowa |
| 55 | August T Adrian | 65 | Head | — | Germany |
| 56 | Catherine Adrian | 57 | Wife | — | Iowa |
| 57 | Alma L Thomas | 34 | Daughter | Bookkeeper | Iowa |
| 58 | Carol Ann Thomas | 3 | Granddaughter | — | Iowa |
| 59 | Linda Lee Thomas | 1 | Granddaughter | — | Iowa |
| 60 | Kenneth W Middour | 29 | Lodger | Landscape Gardener | Illinois |
| 61 | Gerald L Foote | 22 | Lodger | Laborer | Iowa |
| 62 | Owens Sandvig | 24 | Lodger | Receiving Clerk | Iowa |
| 63 | Goldie Howard | 56 | Head | — | Iowa |
| 64 | Guy S Howard | 54 | Brother | Operator Street Car | Iowa |
| 65 | Michael J Gray | 34 | Head | Foreman | Iowa |
| 66 | Mildred E Gray | 26 | Wife | — | Iowa |
| 67 | Giles Joseph V Gray | 0 | Son | — | Iowa |
| 68 | John W Berens | 56 | Head | Lieutenant | Iowa |
| 69 | Florence M Berens | 58 | Wife | — | Iowa |
| 70 | M. Elizabeth Berens | 30 | Daughter | Stenographer | Iowa |
| 71 | Edward L Hughes | 44 | Head | Wholesale Salesman | Iowa |
| 72 | Sarah M Hughes | 45 | Wife | — | Iowa |
| 73 | Helen M Hughes | 17 | Daughter | — | Iowa |
| 74 | Flora-Nell Hughes | 14 | Daughter | — | Iowa |
| 75 | Isaphene Trapp | 65 | Head | — | West Virginia |
| 76 | Edwin B Trapp | 59 | Son-in-law | — | Iowa |
| 77 | Bernard J Shea | 29 | Head | Engineering Aide | Iowa |
| 78 | Cecilia M Shea | 29 | Wife | — | Iowa |
| 79 | Mose Block | 61 | Head | Buyer And Sales | Lithuania |
| 80 | Belle Block | 52 | Wife | — | Lithuania |
Pedigree Summary
Ruth
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)