MW
Mary Warren — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Polk, Iowa
Our Model Tree links this Mary Warren across the 1920 and 1930 US Censuses in Polk, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1912), then head of a 14-person household.
Age 18
b. ~1912
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Polk, Iowa |
| Surname | Warren |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Runnells Town |
| Est. Birth Year | ~1912 |
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.
14 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Gloria Warren | Daughter | — | 4 | ~1926 |
| Virginia Warren | Daughter | — | 8 | ~1922 |
| Mary Warren | Daughter | — | 18 | ~1912 |
| Lucy Warren | Daughter | — | 9 | ~1921 |
| Alma Warren | Daughter | — | 2 | ~1928 |
| Carl Warren | Head | — | 46 | ~1884 |
| George Warren | Other | — | 72 | ~1858 |
| Lucy Warren | Other | — | 43 | ~1887 |
| Irvin Warren | Other | — | 44 | ~1886 |
| Eunice Warren | Son | — | 21 | ~1909 |
| Ernest Warren | Son | — | 20 | ~1910 |
| Earl Warren | Son | — | 13 | ~1917 |
| Kenneth Warren | Son | — | 12 | ~1918 |
| Claud Warren | Son | — | 23 | ~1907 |
Census Appearances
1920
Polk, Iowa
Daughter, age 7
Polk, Iowa · implied b. ~1913 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Warren |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 18
Polk, Iowa · implied b. ~1912 — 14 household members
| Surname | Warren |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Can Read/Write | Yes |
| 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 Warren across 2 US Census years (1920 and 1930) in Polk, Iowa, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Warren
Daughter · 1930 · age 18 · b. ~1912 · Iowa
★ You are viewing this record
Sibling
Virginia Warren
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Warren
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eunice Warren
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alma Warren
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earl Warren
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Claud Warren
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucy Warren
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gloria Warren
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ernest Warren
Sibling · 1930 · age 20
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
1930 US Federal Census — Polk, Iowa
Open full size
1930 US Federal Census — Polk, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel678:0006)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Carl P. Warren | 46 | Head | Laborer | Iowa |
| 52 | Lucy Warren | 43 | Wife-H | — | South Dakota |
| 53 | Claud L. Warren | 23 | Son | Coal Miner | Iowa |
| 54 | Eunice C. Warren | 21 | Son | Coal Miner | Iowa |
| 55 | Ernest L. Warren | 20 | Son | Coal Miner | Iowa |
| 56 | Mary A. Warren THIS PERSON | 18 | Daughter | — | Iowa |
| 57 | Earl Warren | 13 | Son | — | Iowa |
| 58 | Kenneth Warren | 12 | Son | — | Iowa |
| 59 | Lucy F. Warren | 9 | Daughter | — | Iowa |
| 60 | Virginia L. Warren | 8 | Daughter | — | Iowa |
| 61 | Gloria J. Warren | 4 | Daughter | — | Iowa |
| 62 | Alma Warren | 2 | Daughter | — | Iowa |
| 63 | George J. Warren | 72 | Father | — | Iowa |
| 64 | Irvin H. Warren | 44 | Brother | Coal Miner | Iowa |
| 65 | Itai H. Davis | 60 | Head-H | — | Iowa |
| 66 | Sirus E. Brooks | 77 | Head-H | — | Illinois |
| 67 | Eli J. Welshons | 50 | Head | Carpenter | Iowa |
| 68 | Eliza J. Welshons | 43 | Wife-H | — | Iowa |
| 69 | James H. Welshons | 24 | Son | — | Iowa |
| 70 | Albert H. Welshons | 21 | Son | Concrete Work | Iowa |
| 71 | Don E. Welshons | 19 | Son | Concrete Work | Iowa |
| 72 | Raymond Welshons | 13 | Son | — | Iowa |
| 73 | Betty J. Welshons | 5 | Daughter | — | Iowa |
| 74 | Glen L. Welshons | 5 | Son | — | Iowa |
| 75 | George W. Wilson | 68 | Head | Laborer | Iowa |
| 76 | Mary P. Wilson | 40 | Wife-H | — | Iowa |
| 77 | Thomas W. Wilson | 16 | Son | — | Iowa |
| 78 | Zelda M. Wilson | 10 | Daughter | — | Iowa |
| 79 | Joe L. Wilson | 8 | Son | — | Iowa |
| 80 | Ray W. Wilson | 6 | Son | — | Iowa |
| 81 | Ward A. Shell | 36 | Head | Owner | Iowa |
| 82 | Gladys Shell | 31 | Wife-H | — | Illinois |
| 83 | Darrell L. Shell | 15 | Son | — | Iowa |
| 84 | Delmar R. Shell | 10 | Son | — | Iowa |
| 85 | Phineas Busby | 58 | Head | Laborer | Illinois |
| 86 | Laura M. Busby | 53 | Wife-H | — | Illinois |
| 87 | Evelyn Busby | 15 | Daughter | — | Iowa |
| 88 | Herbert Welshons | 78 | Boarder | — | Iowa |
| 89 | Beverly Shawhan | 47 | Head | Truck Driver | Iowa |
| 90 | Maude R. Shawhan | 49 | Wife-H | — | Iowa |
| 91 | Delbert Lewis | 25 | Head | Truck Driver | Iowa |
| 92 | Lois R. Lewis | 27 | Wife H | — | Iowa |
| 93 | Wayne Lewis | 4 | Son | — | Iowa |
| 94 | Walda Lewis | 2 | Daughter | — | Iowa |
| 95 | Naomi Lewis | 0 | Daughter | — | Iowa |
| 96 | Mark C. Shawhan | 22 | Head | Truck Driver | Iowa |
| 97 | Nina Shawhan | 24 | Wife-H | — | Iowa |
| 98 | Jean Shawhan | 2 | Daughter | — | Iowa |
| 99 | Robert G. Shawhan | 0 | Son | — | Iowa |
| 100 | Nancy | 72 | Head-H | — | Scotland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)