WF
William Frey — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this William Frey across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 8-person household.
Age 10
b. ~1920
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Frey |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Additional Details | |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1920 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Mary Frey | Daughter | — | 18 | ~1912 |
| Elizabeth Frey | Spouse | — | 46 | ~1884 |
| William Frey | Son | — | 10 | ~1920 |
| Dora Frey | Daughter | — | 3 | ~1927 |
| Helen Frey | Daughter | — | 12 | ~1918 |
| Matthew Frey | Head | — | 56 | ~1874 |
| Rose Frey | Daughter | — | 23 | ~1907 |
| Rudolph Frey | Son | — | 16 | ~1914 |
Census Appearances
1930
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1920 — 8 household members
| Surname | Frey |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 18
Cook-County, Illinois · implied b. ~1922 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frye |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | New worker |
| Hours Worked | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 William Frey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Frey
Son · 1930 · age 10 · b. ~1920 · Illinois
★ You are viewing this record
Sibling
Helen Frey
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dora Frey
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rudolph Frey
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Frey
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Frey
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 — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel437:1028)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Walter Franke | 24 | Head | Laborer | Illinois |
| 52 | William Franke | 22 | Son | Laborer | Illinois |
| 53 | Anna Wolfe | 19 | Daughter | — | Illinois |
| 54 | Gullius Wolfe | 28 | Son-in-law | Cook | Illinois |
| 55 | John Herald | 44 | Head | — | Michigan |
| 56 | Catherine Herald | 30 | Wife | — | Pennsylvania |
| 57 | Roy Herald | 7 | Son | — | Illinois |
| 58 | Jake Herald | 9 | Son | — | Michigan |
| 59 | Edward Byska | 25 | Head | Contractor | Illinois |
| 60 | Julia Byska | 25 | Wife | — | Illinois |
| 61 | Matthew Frey | 56 | Head | Laborer | Hungary |
| 62 | Elizabeth Frey | 46 | Wife | — | Hungary |
| 63 | Rose R. Frey | 23 | Daughter | Clerk | Hungary |
| 64 | Mary Y. Frey | 18 | Daughter | Clerk | Hungary |
| 65 | Rudolph Frey | 16 | Son | — | Illinois |
| 66 | Helen Frey | 12 | Daughter | — | Illinois |
| 67 | William Frey THIS PERSON | 10 | Son | — | Illinois |
| 68 | Dora Frey | 3 | Daughter | — | Illinois |
| 69 | Matthew Frey | 26 | Head | Laborer | Hungary |
| 70 | Susie S. Frey | 28 | Wife | — | Hungary |
| 71 | Matthew Frey | 6 | Son | — | Illinois |
| 72 | Walter Frey | 6 | Son | — | Illinois |
| 73 | Albert Frey | 5 | Son | — | Illinois |
| 74 | Alex Boras | 42 | Head | Laborer | Lithuania |
| 75 | Marcella Boras | 39 | Wife | — | Lithuania |
| 76 | John Boras | 14 | Son | — | Lithuania |
| 77 | Toney Cook | 52 | Boarder | Laborer | Lithuania |
| 78 | Gustave Markos | 41 | Head | Laborer | Lithuania |
| 79 | Grace Markos | 25 | Wife | — | Illinois |
| 80 | Geraldine Markos | 6 | Daughter | — | Illinois |
| 81 | Robert Markos | 4 | Son | — | Illinois |
| 82 | Madeline Markos | 2 | Daughter | — | Illinois |
| 83 | Anna Markos | 0 | Daughter | — | Illinois |
| 84 | Charles Biskos | 42 | Head | Mechanic | Russia |
| 85 | Elizabeth Biskos | 45 | Wife | — | Illinois |
| 86 | Mable Biskos | 24 | Daughter | — | Illinois |
| 87 | Ella Biskos | 23 | Daughter | — | Illinois |
| 88 | Margaret Biskos | 19 | Daughter | — | Illinois |
| 89 | Howard Biskos | 16 | Son | — | Illinois |
| 90 | Anna Biskos | 11 | Daughter | — | Illinois |
| 91 | Marion Biskos | 2 | Daughter | — | Illinois |
| 92 | Irene Miller | 32 | Sister | Laborer | Illinois |
| 93 | Oliver Hacker | 47 | Head | — | Illinois |
| 94 | Gladis Hacker | 51 | Wife | Chauffeur | Minnesota |
| 95 | Henry Taschen | 22 | Head | — | Illinois |
| 96 | Margret Taschen | 18 | Wife | — | Illinois |
| 97 | Henry Jr. Taschen | 1 | Son | — | Illinois |
| 98 | Tony Poznia | 39 | Head | Barber | Poland |
| 99 | Mary Poznia | 39 | Wife | — | Poland |
| 100 | Mary Poznia | 16 | Daughter | — | 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)