MR
Mary Riley — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Mary Riley across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents W & Wm — first a daughter (b.~1914), then head of a 6-person household.
Age 26
b. ~1914
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Riley |
| Given Name | Mary Frances |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1914 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Riley | Daughter | — | 26 | ~1914 |
| Catherine Riley | Daughter | — | 10 | ~1930 |
| W Riley | Head | — | 56 | ~1884 |
| Phillip Riley | Son | — | 14 | ~1926 |
| Robert Riley | Son | — | 23 | ~1917 |
| Catherine Riley | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Polk, Iowa
Daughter, age 7
Polk, Iowa · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | Mary Frances |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 16
Polk, Iowa · implied b. ~1914 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | Mary Frances |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Daughter, age 26
Polk-County, Iowa · implied b. ~1914 — 6 household members
| Surname | Riley |
| Given Name | Mary Frances |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Iowa |
| 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 Mary Riley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father W Riley (~0.92 confidence) and father Wm Riley (~0.92 confidence) and father William Riley (~0.92 confidence) and mother Catherine Riley (~0.92 confidence) and mother Katherine Riley (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
W Riley
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Wm Riley
b. ~1885
Source father
● Household
· direct · ~0.92
Father
William Riley
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Catherine Riley
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Katherine Riley
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Riley
Daughter · 1940 · age 26 · b. ~1914 · Iowa
★ You are viewing this record
Sibling
Robert Riley
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phillip Riley
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Riley
Sibling · 1940 · age 10
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 — 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-t0627-01193-00847)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jennie Heick | 78 | Head | — | Iowa |
| 42 | Marian Brecht | 58 | Daughter | — | Iowa |
| 43 | Justine Brecht | 31 | Granddaughter | — | Iowa |
| 44 | Louise Duncan | 67 | Maid | Servant | Iowa |
| 45 | Ethel Jones | 48 | Head | — | Iowa |
| 46 | Richard Jones | 24 | Son | Lawyer | Iowa |
| 47 | Helen Jones | 39 | Daughter | None Reported | Wisconsin |
| 48 | Joseph H. Allen | 69 | Head | Lawyer | Iowa |
| 49 | Grace G. Allen | 64 | Wife | — | Iowa |
| 50 | Josephine Allen | 32 | Daughter | Commercial Artist | Iowa |
| 51 | Byron G. Allen | 38 | Son | Writer | Iowa |
| 52 | Elsie Allen | 39 | Daughter-in-law | — | Iowa |
| 53 | Virginia Allen | 12 | Granddaughter | — | Iowa |
| 54 | Eric Allen | 8 | Grandson | — | Iowa |
| 55 | Jacob Tignee | 40 | Head | Caretaker | Iowa |
| 56 | Carrie Tignee | 38 | Wife | Caretaker | Iowa |
| 57 | Hugo Snothel | 47 | Head | Circulation Mgr | Iowa |
| 58 | Ann Snothel | 45 | Wife | — | Iowa |
| 59 | Hugo Jr. Snothel | 19 | Son | — | Iowa |
| 60 | Ann G. Snothel | 10 | Daughter | — | Iowa |
| 61 | Gretchen Straight | 22 | Maid | Maid | Iowa |
| 62 | Wm. Hurlbut | 41 | Head | Attorney | Iowa |
| 63 | Alice Hurlbut | 45 | Wife | — | Iowa |
| 64 | Millard Hurlbut | 18 | Son | Salesman | Iowa |
| 65 | Stella East | 22 | Maid | Maid | Minnesota |
| 66 | Della Rust | 75 | Head | — | Iowa |
| 67 | Wm. Moss | 61 | Servant | Servant | Iowa |
| 68 | W. Francis Riley | 56 | Head | Attorney | Iowa |
| 69 | Catherine Riley | 55 | Wife | — | Iowa |
| 70 | Mary Frances Riley THIS PERSON | 26 | Daughter | — | Iowa |
| 71 | Robert Francis Riley | 23 | Son | — | Iowa |
| 72 | Phillip H. Riley | 14 | Son | — | Iowa |
| 73 | Catherine Riley | 10 | Daughter | — | Iowa |
| 74 | Eli Raymond Shapiro | 41 | Head | Manager | Russia |
| 75 | Lottie Shapiro | 39 | Wife | — | Illinois |
| 76 | Marilyn Louise Shapiro | 16 | Daughter | — | Illinois |
| 77 | Sheldon Shapiro | 13 | Son | — | Illinois |
| 78 | Viemma Gunderson | 23 | Maid | House Maid | Illinois |
| 79 | Amos Johnson | 40 | Cook | Cook | Iowa |
| 80 | Wm. Marvin Marshall | 39 | Head | Real Estate | Missouri |
Pedigree Summary
Mary + 3 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)