WJ
William Jacobs — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this William Jacobs across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Louis & Joseph — first a son (b.~1914), then head of a 6-person household.
Age 16
b. ~1914
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Jacobs |
| Given Name | William R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1914 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Lucille Jacobs | Daughter | — | 26 | ~1904 |
| Louis Jacobs | Head | — | 55 | ~1875 |
| Anna Scheer | Other | — | 47 | ~1883 |
| William Jacobs | Son | — | 16 | ~1914 |
| Louis Jacobs | Son | — | 18 | ~1912 |
| Minnie Jacobs | Spouse | — | 45 | ~1885 |
Census Appearances
1920
Cook, Illinois
Son, age 6
Cook, Illinois · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobi |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 16
Cook, Illinois · implied b. ~1914 — 6 household members
| Surname | Jacobs |
| Given Name | William R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Other, age 27
Cook-County, Illinois · implied b. ~1913 — 39 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacob |
| Given Name | William |
| Relationship to Head | guest |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Springfield |
| Occupation | Bookkeeping |
| Industry | Finance Dept |
| Class of Worker | PW |
| Hours Worked | 39 |
| Income (1939) | 210 |
| Highest Grade | C-2 |
| 1935 Residence | Illinois |
| 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 Jacobs across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Louis Jacobs (~0.92 confidence) and father Joseph Jacobi (~0.92 confidence) and mother Minnie Jacobs (~0.92 confidence) and mother Maud Jacobi (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Louis Jacobs
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Joseph Jacobi
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Minnie Jacobs
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Maud Jacobi
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Jacobs
Son · 1930 · age 16 · b. ~1914 · Illinois
★ You are viewing this record
Sibling
Lucille Jacobs
Sibling · 1930 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Jacobs
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:illinoiscensus00reel449:0753)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Solomon T Kidder | 46 | Head | Vice President | Illinois |
| 2 | Mabel S Kidder | 46 | Wife | None | Illinois |
| 3 | Helen L Kidder | 21 | Daughter | None | South Dakota |
| 4 | Thomas E Kidder | 19 | Son | None | South Dakota |
| 5 | Emil Hoheisen | 30 | Butler | Houseman | Germany |
| 6 | Gertrude Hoheisen | 27 | Servant | Servant | Germany |
| 7 | Wilford R Sproul | 42 | Head | President | Illinois |
| 8 | Frances E Sproul | 39 | Wife | None | Illinois |
| 9 | Elliott W Sproul | 79 | Father | Rep. In Congress | Canada-Eng |
| 10 | Elliott R Sproul | 19 | Son | Bricklayer | Illinois |
| 11 | Wilford R Jr Sproul | 16 | Son | None | Illinois |
| 12 | John S Sproul | 14 | Son | None | Illinois |
| 13 | Dandridge Sproul | 7 | Son | None | Illinois |
| 14 | Marion H Bailey | 39 | Servant | Servant | Massachusetts |
| 15 | Lucius H Bailey | 38 | Servant | House Man | New York |
| 16 | Arthur T Clarage | 35 | Head | President | Illinois |
| 17 | Helen S Clarage | 32 | Wife | None | Illinois |
| 18 | Thomas A Clarage | 8 | Son | None | Illinois |
| 19 | Richard S Clarage | 5 | Son | None | Illinois |
| 20 | Signe N Hulten | 42 | Servant | Servant | Sweden |
| 21 | Britta Person | 30 | Servant | Servant | Sweden |
| 22 | Henry P Downey | 38 | Head | Sheet Paving | Illinois |
| 23 | Marie G Downey | 29 | Wife | None | Illinois |
| 24 | Henry P Jr Downey | 3 | Son | None | Illinois |
| 25 | Marie G Downey | 1 | Daughter | None | Illinois |
| 26 | Edith A Smith | 49 | Servant | Servant | Ohio |
| 27 | Misinformed | None | — | — | — |
| 28 | Louis G Jacobs | 55 | Head | Treasurer | Illinois |
| 29 | Minnie M Jacobs | 45 | Wife | None | Illinois |
| 30 | Lucille E Jacobs | 26 | Daughter | Secretary | Illinois |
| 31 | Louis G Jacobs | 18 | Son | None | Illinois |
| 32 | William R Jacobs THIS PERSON | 16 | Son | None | Illinois |
| 33 | Anna A Scheer | 47 | Servant | Servant | Illinois |
| 34 | Rensselaer Greer | 55 | Head | Salesman | New York |
| 35 | Ruth N Greer | 34 | Wife | None | New York |
| 36 | Robert C Greer | 6 | Son | None | Illinois |
| 37 | Donald N Greer | 4 | Son | None | Illinois |
| 38 | Orrin A Camer | 52 | Head | Broker | Illinois |
| 39 | Frieda D Camer | 42 | Wife | None | Germany |
| 40 | Frances M Camer | 20 | Daughter | Clerk | Illinois |
| 41 | Orrin A Jr Camer | 19 | Son | None | Illinois |
| 42 | Verna R Camer | 12 | Daughter | None | Illinois |
| 43 | John J Monahan | 55 | Head | Broker | Illinois |
| 44 | Anna A Monahan | 53 | Wife | None | Illinois |
| 45 | Bessie F Monahan | 40 | Daughter | Teacher | Illinois |
| 46 | Sanford F Coons | 56 | Head | None | Indiana |
| 47 | Lillian M Coons | 44 | Wife | None | Minnesota |
| 48 | Jeremy Barnhart | 35 | Boarder | Houseman | Mississippi |
| 49 | Goldie Barnhart | 23 | Servant | Servant | Illinois |
| 50 | James C Sperce | 34 | Head | Attorney | Illinois |
Pedigree Summary
William + 2 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)