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William Jacobs — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lee-County, Illinois
Our Model Tree links this William Jacobs across the 1920, 1930 and 1940 US Censuses in Lee-County, Illinois (XGBoost, ~Confirmed), with identified parents Anna — first a head (b.~1898), then head of a 4-person household.
Age 42
b. ~1898
Male
Head
Born: Germany
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lee-County, Illinois |
| Surname | Jacobs |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | ASHTON Village |
| 1935 Residence (County) | LEE |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Operator |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 50 |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Occupation | Operator |
| Township / Ward | Ashton Village |
| Est. Birth Year | ~1898 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Carol Jacobs | Daughter | — | 4 | ~1936 |
| William Jacobs | Head | — | 42 | ~1898 |
| Billy Jacobs | Son | — | 12 | ~1928 |
| Amanda Jacobs | Spouse | — | 38 | ~1902 |
Census Appearances
1920
Lee, Illinois
Son, age 22
Lee, Illinois · implied b. ~1898 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Germany |
| Year of Immigration | 1901 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | Gen farm |
| Class of Worker | W.W. |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Year of Naturalization | 1905 |
| Birthplace (normalized) | germany |
1930
Lee, Illinois
Head, age 31
Lee, Illinois · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1900 |
| Age at First Marriage | 27 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Machinist |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Lee-County, Illinois
Head, age 42
Lee-County, Illinois · implied b. ~1898 — 4 household members
| Surname | Jacobs |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | ASHTON Village |
| 1935 Residence (County) | LEE |
| Naturalization Status | Naturalized |
| Occupation | Operator |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 50 |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| 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 William Jacobs across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Anna Jacobs (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Anna Jacobs
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Jacobs
Head · 1940 · age 42 · b. ~1898 · 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 — Lee-County, Illinois
Open full size
1940 US Federal Census — Lee-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00836-00099)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jacob Koenes | 33 | Head | Foreman | Illinois |
| 2 | Johanna Koenes | 30 | Wife | — | Illinois |
| 3 | Harold Koenes | 5 | Son | — | Illinois |
| 4 | Vernon Koenes | 2 | Son | — | Illinois |
| 5 | William Jacobs THIS PERSON | 42 | Head | Operator | Germany |
| 6 | Amanda Jacobs | 38 | Wife | — | Illinois |
| 7 | Billy Jacobs | 12 | Son | — | Illinois |
| 8 | Carol Jacobs | 4 | Daughter | — | Illinois |
| 9 | Curtis Calhoun | 59 | Head | Doctor | Illinois |
| 10 | Louise Calhoun | 58 | Wife | — | Illinois |
| 11 | Harold Dubbs | 41 | Head | Mechanic | Illinois |
| 12 | Cecilia Dubbs | 40 | Wife | — | Illinois |
| 13 | Agnes Brillman | 64 | Mother in Law | — | Michigan |
| 14 | Frank Brillman | 67 | Father in Law | — | Michigan |
| 15 | Harry Dubbs | 4 | Son | — | Illinois |
| 16 | Leila Willett | 40 | Head | — | Illinois |
| 17 | Lue Cortright | 78 | Mother | — | Illinois |
| 18 | Charles Glinderman | 64 | Head | — | Illinois |
| 19 | Charles Lake | 51 | Head | — | Illinois |
| 20 | Ida F. Lake | 66 | Wife | — | English Canada |
| 21 | Charles Lake | 31 | Son | Booking Agt. | Illinois |
| 22 | Daisy Lake | 35 | Daughter in Law | Adv. Ticket Agt. | Illinois |
| 23 | Richard C. Carter | 11 | Grand Son | — | Illinois |
| 24 | William Schade | 63 | Head | — | Illinois |
| 25 | Faye Schade | 57 | Wife | — | Illinois |
| 26 | Nettie Gibson | 62 | Head | — | Illinois |
| 27 | Daisy Cole | 37 | Daughter | Spinner | Illinois |
| 28 | Robert Cole | 16 | Grand Son | — | Illinois |
| 29 | Willie D. Q. Quick | 79 | Head | — | Illinois |
| 30 | Frank O. Whitsell | 31 | Head | Labor | Illinois |
| 31 | Nellie Whitsell | 30 | Wife | — | Illinois |
| 32 | Shirley Whitsell | 7 | Daughter | — | Illinois |
| 33 | Raymond Losey | 45 | Head | R. Mail Man | Wisconsin |
| 34 | Sera Losey | 50 | Wife | — | Illinois |
| 35 | Wayne Wise | 26 | Head | Agriculture Instructor | Illinois |
| 36 | Betty Wise | 22 | Wife | — | Illinois |
| 37 | Gerald Wise | 2 | Son | — | Illinois |
| 38 | Blanche Masselman | 40 | Lodger | — | Penn |
| 39 | Harvey Nylandes | 53 | Head | Watchman | Indiana |
| 40 | Roy Jeter | 57 | Head | Helper | Illinois |
Pedigree Summary
William
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)