MB
Mary Bauer — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Carroll, Iowa
Our Model Tree links this Mary Bauer across the 1920 and 1930 US Censuses in Carroll, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1904), then head of a 8-person household.
Age 26
b. ~1904
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Carroll, Iowa |
| Surname | Bauer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Pleasant Valley Township |
| Est. Birth Year | ~1904 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Bauer | Daughter | — | 26 | ~1904 |
| Regina Bauer | Daughter | — | 22 | ~1908 |
| Eva Bauer | Daughter | — | 15 | ~1915 |
| John Bauer | Head | — | 56 | ~1874 |
| Elma Bauer | Other | — | 50 | ~1880 |
| Clarence Bauer | Son | — | 13 | ~1917 |
| Bernard Bauer | Son | — | 18 | ~1912 |
| Melvin Bauer | Son | — | 7 | ~1923 |
Census Appearances
1920
Carroll, Iowa
Daughter, age 15
Carroll, Iowa · implied b. ~1905 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bauer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Carroll, Iowa
Daughter, age 26
Carroll, Iowa · implied b. ~1904 — 8 household members
| Surname | Bauer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| 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 Bauer across 2 US Census years (1920 and 1930) in Carroll, Iowa, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bauer
Daughter · 1930 · age 26 · b. ~1904 · Iowa
★ You are viewing this record
Sibling
Regina Bauer
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eva Bauer
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarence Bauer
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melvin Bauer
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Bauer
Sibling · 1930 · age 18
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 — Carroll, Iowa
Open full size
1930 US Federal Census — Carroll, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel646:0321)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John B Bauer | 56 | Head | Farmer | Germany |
| 2 | Elma Bauer | 50 | Wife-H | — | Iowa |
| 3 | Mary Bauer THIS PERSON | 26 | Daughter | — | Iowa |
| 4 | Regina Bauer | 22 | Daughter | — | Iowa |
| 5 | Bernard Bauer | 18 | Son | — | Iowa |
| 6 | Eva Bauer | 15 | Daughter | — | Iowa |
| 7 | Clarence J Bauer | 13 | Son | — | Iowa |
| 8 | Melvin J Bauer | 7 | Son | — | Iowa |
| 9 | John A Jr. Bauer | 24 | Head | Farmer | Iowa |
| 10 | Daisy Bauer | 24 | Wife-H | — | Iowa |
| 11 | John H Huszer | 36 | Head | Farmer | Iowa |
| 12 | Hilda Huszer | 28 | Wife-H | — | Iowa |
| 13 | Leon H Huszer | 6 | Son | — | Iowa |
| 14 | Dwayne J Huszer | 5 | Son | — | Iowa |
| 15 | Ivan L Huszer | 2 | Son | — | Iowa |
| 16 | Robert E Huszer | 0 | Son | — | Iowa |
| 17 | Agnes Thoman | 15 | Servant | Servant | Iowa |
| 18 | Joe Jr. Brinker | 33 | Head | Farmer | Iowa |
| 19 | Katherine Brinker | 27 | Wife-H | — | Iowa |
| 20 | Coletta K Brinker | 8 | Daughter | — | Iowa |
| 21 | Helen M Brinker | 6 | Daughter | — | Iowa |
| 22 | Albert J Brinker | 4 | Son | — | Iowa |
| 23 | Raymond J Brinker | 2 | Son | — | Iowa |
| 24 | Elizabeth V Brinker | 0 | Daughter | — | Iowa |
| 25 | J. J. Hansmann | 37 | Head | Farmer | Iowa |
| 26 | Rose Hansmann | 38 | Wife-H | — | Iowa |
| 27 | Melvin Hansmann | 15 | Son | — | Iowa |
| 28 | Marcella Hansmann | 13 | Daughter | — | Iowa |
| 29 | Larry Hansmann | 11 | Son | — | Iowa |
| 30 | Robert Hansmann | 7 | Son | — | Iowa |
| 31 | Phyllis Hansmann | 5 | Daughter | — | Iowa |
| 32 | Arlene Hansmann | 2 | Daughter | — | Iowa |
| 33 | John Tigges | 55 | Head | Farmer | Iowa |
| 34 | Anna Tigges | 43 | Wife-H | — | Iowa |
| 35 | George H Tigges | 24 | Son | Laborer | Iowa |
| 36 | Mathilda M Tigges | 22 | Daughter | — | Iowa |
| 37 | Katherine M Tigges | 21 | Daughter | — | Iowa |
| 38 | Victor P Tigges | 20 | Son | — | Iowa |
| 39 | William H Tigges | 18 | Son | — | Iowa |
| 40 | Regina V Tigges | 16 | Daughter | — | Iowa |
| 41 | Clarence J Tigges | 14 | Son | — | Iowa |
| 42 | Pharda M Tigges | 12 | Daughter | — | Iowa |
| 43 | Ellen B Tigges | 9 | Daughter | — | Iowa |
| 44 | Alvina E Tigges | 7 | Daughter | — | Iowa |
| 45 | Kenneth J Tigges | 4 | Son | — | Iowa |
| 46 | Patricia B Tigges | 2 | Daughter | — | Iowa |
| 47 | Theo. Brinker | 34 | Head | Farmer | Iowa |
| 48 | Teresa Brinker | 25 | Wife-H | — | Iowa |
| 49 | Evelyn M Brinker | 4 | Daughter | — | Iowa |
| 50 | Herbert H Brinker | 2 | Son | — | Iowa |
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)