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Frank Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Frank Clark across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed), with identified parents Jerome & Fannie — first a son (b.~1889), then head of a 2-person household.
Age 51
b. ~1889
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Clark |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Loves Park |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Loves Park |
| Est. Birth Year | ~1889 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Harry Clark | Head | — | 77 | ~1863 |
| Frank Clark | Son | — | 51 | ~1889 |
Census Appearances
1920
Winnebago, Illinois
Son, age 30
Winnebago, Illinois · implied b. ~1890 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Frank L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Occupation | Laborer |
| Industry | Cement Works |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Winnebago, Illinois
Son, age 41
Winnebago, Illinois · implied b. ~1889 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Widowed |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Occupation | Mason |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Winnebago-County, Illinois
Son, age 51
Winnebago-County, Illinois · implied b. ~1889 — 2 household members
| Surname | Clark |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Loves Park |
| 1935 Residence (County) | Winnebago |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Frank Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jerome Clark (~0.92 confidence) and mother Fannie Clark (~0.92 confidence) and mother Carrie Clark (~0.92 confidence) and father Harry Clark (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jerome Clark
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Fannie Clark
b. ~1862
Source mother
● Household
· direct · ~0.92
Mother
Carrie Clark
b. ~1862
Source mother
● Household
· direct · ~0.92
Father
Harry Clark
b. ~1863
Source father
● Household
· direct · ~0.92
This person
Anchor record
Frank Clark
Son · 1940 · age 51 · b. ~1889 · 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 — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00915-00279)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marjorie Hess | 10 | Daughter | — | Illinois |
| 2 | Theodore Wolfe | 39 | Head | Machinist | Iowa |
| 3 | Daisy Wolfe | 44 | Wife | — | Iowa |
| 4 | Robert Anderson | 42 | Head | Filling Station Attendant | Scotland |
| 5 | Cora E. Anderson | 47 | Wife | — | Illinois |
| 6 | Marion Nantz | 23 | Niece | Pairer | Illinois |
| 7 | Harry Clark | 77 | Head | — | Wisconsin |
| 8 | Frank Clark THIS PERSON | 51 | Son | — | Wisconsin |
| 9 | Bernhard Heckman | 29 | Head | Plater | Illinois |
| 10 | Edna Heckman | 25 | Wife | — | Illinois |
| 11 | Patsy Heckman | 4 | Daughter | — | Illinois |
| 13 | Alfred Bredsteen | 55 | Head | Owner Mech | Wisconsin |
| 14 | Agnes Bredsteen | 55 | Wife | — | Wisconsin |
| 15 | Sophia Bredsteen | 79 | Mother | — | Denmark |
| 16 | Axel Anderson | 52 | Head | Sawyer | Sweden |
| 17 | Anna Anderson | 53 | Wife | — | Sweden |
| 18 | Clarence Anderson | 28 | Son | Finisher | Illinois |
| 19 | Eric Anderson | 20 | Son | Boring Mach. | Illinois |
| 20 | Rosella Anderson | 15 | Daughter | — | Wisconsin |
| 21 | Anna Shields | 42 | Head | Grocery Clerk | Missouri |
| 22 | Maxine Henley | 34 | Sister | Grocery Clerk | Missouri |
| 23 | Rex Elmore Shields | 10 | Son | — | Iowa |
| 24 | Edward E. Koch | 70 | Head | — | Illinois |
| 25 | Lucia M. Koch | 69 | Wife | — | Illinois |
| 26 | Melville Koch | 33 | Son | Machinist | Iowa |
| 27 | Elsie Koch | 35 | Daughter-in-law | — | Illinois |
| 28 | Beverly Koch | 12 | Daughter | — | Illinois |
| 29 | Bernhard Koch | 7 | Son | — | Illinois |
| 30 | Charles L. Holden | 33 | Head | Pattern Maker | Illinois |
| 31 | Fern L. Holden | 27 | Wife | — | Minnesota |
| 32 | Shirley Holden | 8 | Daughter | — | Illinois |
| 33 | Clifford Jr. Lichthardt | 43 | Head | Street Sweeper | Illinois |
| 34 | Agnes Lichthardt | 45 | Wife | — | Illinois |
| 35 | Martha J. Lichthardt | 16 | Daughter | — | Illinois |
| 36 | Joyce Lichthardt | 13 | Daughter | — | Illinois |
| 37 | Henry C. Arndt | 32 | Head | Salesman | Illinois |
| 38 | Doris C. Arndt | 32 | Wife | — | Illinois |
| 39 | William Arndt | 66 | Father | — | Illinois |
| 40 | Joseph Brady | 68 | Head | — | Canada-Eng |
Pedigree Summary
Frank
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 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)