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Bertha Schmidt — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Bertha Schmidt across the 1900, 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1859), then head of a 7-person household.
Age 71
b. ~1859
Female
Spouse
Born: Germany
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Schmidt |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1872 |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1859 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Bertha | Age | Birth yr |
|---|---|---|---|---|
| Lorraine Hettmann | Other | — | 3 | ~1927 |
| William Schmidt | Head | — | 72 | ~1858 |
| Meta Hettmann | Daughter | — | 31 | ~1899 |
| Fred Schmidt | Son | — | 36 | ~1894 |
| Alfred Hettmann | Other | — | 26 | ~1904 |
| Bertha Schmidt | Spouse | — | 71 | ~1859 |
| Lillian French | Other | — | 23 | ~1907 |
Census Appearances
1900
Cook, Illinois
Spouse, age 45
Cook, Illinois · implied b. ~1855 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Germany |
| Birth Month | Jan |
| Birth Year | 1855 |
| Year of Immigration | 1880 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1910
Cook, Illinois
Spouse, age 54
Cook, Illinois · implied b. ~1856 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Germany |
| Years Married | 25 |
| Year of Immigration | 1882 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1920
Cook, Illinois
Spouse, age 61
Cook, Illinois · implied b. ~1859 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Germany |
| Year of Immigration | 1882 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Year of Naturalization | 1887 |
| Birthplace (normalized) | germany |
1930
Cook, Illinois
Spouse, age 71
Cook, Illinois · implied b. ~1859 — 7 household members
| Surname | Schmidt |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1872 |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Bertha Schmidt across 4 US Census years (1900, 1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage.
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This person
Anchor record
Bertha Schmidt
Spouse · 1930 · age 71 · b. ~1859 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel481:1056)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur Kefer | 29 | Head | Salesman | Illinois |
| 2 | Genevieve Kefer | 34 | Wife | — | Illinois |
| 3 | Arthur Kefer | 6 | Son | — | Illinois |
| 4 | Marjorie Kefer | 6 | Daughter | — | Illinois |
| 5 | William Oelker | 60 | Head | Salesman | Germany |
| 6 | Kate Oelker | 53 | Wife | — | Illinois |
| 7 | William Schmidt | 72 | Head | — | Illinois |
| 8 | Bertha Schmidt THIS PERSON | 71 | Wife | — | Germany |
| 9 | Fred Schmidt | 36 | Son | Steam Fitter | Illinois |
| 10 | Alfred Hettmann | 26 | Son-in-law | Sign Painter | Illinois |
| 11 | Meta Hettmann | 31 | Daughter | — | Illinois |
| 12 | Lorraine Hettmann | 3 | Granddaughter | — | Illinois |
| 13 | Lillian French | 23 | Granddaughter | Key Puncher | Illinois |
| 14 | Boleslaw Skarbek | 48 | Head | Machinist | Poland |
| 15 | Pauline Skarbek | 41 | Wife | — | Germany |
| 16 | Louise Skarbek | 21 | Daughter | Bookkeeper | Illinois |
| 17 | Martin Woyczynski | 45 | Head | Salesman | Germany |
| 18 | Josephine Woyczynski | 43 | Wife | — | Illinois |
| 19 | Leo Woyczynski | 22 | Son | — | Illinois |
| 20 | Frank Eichstaedt | 74 | Head | — | Germany |
| 21 | Bertha Eichstaedt | 66 | Wife | — | Germany |
| 22 | Joseph J. Novak | 47 | Head | Engineer | Illinois |
| 23 | Louise H. Novak | 46 | Wife | — | Illinois |
| 24 | William Novak | 27 | Son | Agent | Illinois |
| 25 | Esther Novak | 26 | Daughter-in-law | — | Illinois |
| 26 | William J. Novak | 0 | Grandson | — | Illinois |
| 27 | William H. Wind | 52 | Head | Fireman | Illinois |
| 28 | Augusta Wind | 51 | Wife | — | Germany |
| 29 | William H. Jr. Wind | 30 | Son | Radio Repair | Illinois |
| 30 | Richard A. Wind | 25 | Son | Guard | Illinois |
| 31 | Morris Wolke | 40 | Head | Merchant | Russia |
| 32 | Sarah Wolke | 38 | Wife | — | Russia |
| 33 | Albert Wolke | 30 | Brother | Clerk | Russia |
| 34 | Joseph Kotler | 80 | Head | — | Russia |
| 35 | Abe Kotler | 40 | Son | Merchant | Russia |
| 36 | Sara Kotler | 27 | Daughter | — | Russia |
| 37 | Gertrude Kotler | 22 | Granddaughter | Saleslady | Michigan |
| 38 | Elizabeth Wojteski | 58 | Head | — | Illinois |
| 39 | Edward Wojteski | 26 | Son | Assembler | Illinois |
| 40 | Dennis Wojteski | 24 | Son | Assembler | Illinois |
| 41 | Gertrude Wojteski | 21 | Daughter | Clerk | Illinois |
| 42 | George Wojteski | 18 | Son | Errand Boy | Illinois |
| 43 | Frank Bruski | 63 | Brother | — | Germany |
| 44 | Charles Schmook | 60 | Head | — | Illinois |
| 45 | Augusta Schmook | 60 | Wife | — | Germany |
| 46 | Herbert Schmook | 29 | Son | Manager | Illinois |
| 47 | Antje Schmook | 95 | Mother | — | Germany |
| 48 | Louis Moeller | 53 | Head | — | Germany |
| 49 | Mary Moeller | 52 | Wife | — | Germany |
| 50 | Herman Grimm | 32 | Son-in-law | Helper | Illinois |
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)