JF
John Fritz — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Fritz across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 7-person household.
Age 52
b. ~1888
Male
Head
Born: Austria
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Fritz |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Austria |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Watchman |
| Industry | Rubber Tires |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 1000 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Austria |
| Birthplace (normalized) | austria |
| Occupation | Watchman |
| Township / Ward | Chicago |
| Est. Birth Year | ~1888 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Robert Fritz | Son | — | 12 | ~1928 |
| Mary Fritz | Spouse | — | 48 | ~1892 |
| Lillian Fritz | Daughter | — | 20 | ~1920 |
| John Fritz | Head | — | 52 | ~1888 |
| Edward Fritz | Son | — | 16 | ~1924 |
| Margaret Fritz | Daughter | — | 14 | ~1926 |
| Henry Fritz | Son | — | 18 | ~1922 |
Census Appearances
1920
Cook, Illinois
Head, age 35
Cook, Illinois · implied b. ~1885 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fritz |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Austria |
| Year of Immigration | 1901 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Occupation | Cabinetmaker |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Birth Country | Austria |
| Year of Naturalization | 1911 |
| Birthplace (normalized) | austria |
1930
Cook, Illinois
Head, age 44
Cook, Illinois · implied b. ~1886 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fritz |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Austria |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 22 |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Occupation | Carpenter |
| Industry | Own Shop |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 7000 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Austria |
| Birthplace (normalized) | austria |
1940
Cook-County, Illinois
Head, age 52
Cook-County, Illinois · implied b. ~1888 — 7 household members
| Surname | Fritz |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Austria |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Watchman |
| Industry | Rubber Tires |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 1000 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Austria |
| Birthplace (normalized) | austria |
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 John Fritz across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Fritz
Head · 1940 · age 52 · b. ~1888 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00950-00823)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Fritz THIS PERSON | 52 | Head | Watchman | Austria |
| 42 | Mary Fritz | 48 | Wife | — | Austria |
| 43 | Lillian Fritz | 20 | Daughter | Soldierer | Illinois |
| 44 | Henry Fritz | 18 | Son | Laborer | Illinois |
| 45 | Edward Fritz | 16 | Son | — | Illinois |
| 46 | Margaret Fritz | 14 | Daughter | — | Illinois |
| 47 | Robert Fritz | 12 | Son | — | Illinois |
| 48 | John Sache | 45 | Head | — | Jugoslavia |
| 49 | Anna Sache | 42 | Wife | Housework | Austria |
| 50 | Anna Sache | 22 | Daughter | File Clerk | Illinois |
| 51 | Lorraine Sache | 13 | Daughter | — | Illinois |
| 52 | Joseph Baba | 45 | Head | Janitor | Austria |
| 53 | Theresa Baba | 44 | Wife | — | Austria |
| 54 | Joseph B. Baba | 21 | Son | Pan Washer | Illinois |
| 55 | Elizabeth Baba | 18 | Daughter | Stock Clerk | Illinois |
| 56 | Carl J. Gross | 32 | Head | Sampler | Austria |
| 57 | Theresa Gross | 30 | Wife | — | Austria |
| 58 | Carl J. Jr. Gross | 5 | Son | — | Illinois |
| 59 | John Pachan | 27 | Head | Painter | Wisconsin |
| 60 | Mary Pachan | 27 | Wife | — | Illinois |
| 61 | Frank Pachan | 5 | Son | — | Illinois |
| 62 | Frank Feckenast | 59 | Head | Laborer | Hungary |
| 63 | Susanna Feckenast | 51 | Wife | — | Hungary |
| 64 | Frank Jr. Feckenast | 28 | Son | Machinist | Illinois |
| 65 | Charles Feckenast | 27 | Son | Laborer | Illinois |
| 66 | Elizabeth Feckenast | 24 | Daughter | Forewoman | Illinois |
| 67 | Alfred Feckenast | 20 | Son | New Worker | Illinois |
| 68 | Marie Feckenast | 18 | Daughter | — | Illinois |
| 69 | Walter Feckenast | 12 | Son | — | Illinois |
| 70 | Mildred Feckenast | 9 | Daughter | — | Illinois |
| 71 | James Davino | 46 | Head | Laborer | Italy |
| 72 | Christina Davino | 30 | Wife | — | Italy |
| 73 | Joseph Davino | 23 | Son | Apprentice Printer | Illinois |
| 74 | John Davino | 9 | Son | — | Illinois |
| 75 | Henry Wolf | 34 | Head | Manager | Illinois |
| 76 | Laura Wolf | 30 | Wife | — | Illinois |
| 77 | Henry W. Wolf | 9 | Son | — | Illinois |
| 78 | Shirley M. Wolf | 8 | Daughter | — | Illinois |
| 79 | Andrew Guerin | 58 | Head | — | Illinois |
| 80 | Thomas Guerin | 56 | Brother | — | Illinois |
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)