RK
Robert Kelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jo-Daviess-County, Illinois
Our Model Tree links this Robert Kelly across the 1920, 1930 and 1940 US Censuses in Jo-Daviess-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Lena — first a son (b.~1915), then head of a 6-person household.
Age 25
b. ~1915
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jo-Daviess-County, Illinois |
| Surname | Kelly |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Galena City |
| 1935 Residence (County) | Jo Daviess |
| Additional Details | |
| Occupation | Clerk |
| Industry | Retail Food Store |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 750 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Galena City |
| Est. Birth Year | ~1915 |
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 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Mary Kelly | Daughter | — | 19 | ~1921 |
| John Kelly | Head | — | 57 | ~1883 |
| Robert Kelly | Son | — | 25 | ~1915 |
| David Kelly | Son | — | 21 | ~1919 |
| James Kelly | Son | — | 14 | ~1926 |
| Lena Kelly | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Jo Daviess, …
Son, age 5
Jo Daviess, Illinois · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Jo Daviess, …
Son, age 15
Jo Daviess, Illinois · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Age at First Marriage | No |
| 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
Jo-Daviess-County, Illinois
Son, age 25
Jo-Daviess-County, Illinois · implied b. ~1915 — 6 household members
| Surname | Kelly |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Galena City |
| 1935 Residence (County) | Jo Daviess |
| Occupation | Clerk |
| Industry | Retail Food Store |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 750 |
| Highest Grade | Hs 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 Robert Kelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Kelly (~0.92 confidence) and mother Lena Kelly (~0.92 confidence) and mother Lina Kelly (~0.92 confidence) and mother Lena Kelly (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Kelly
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Lena Kelly
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Lina Kelly
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Lena Kelly
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Kelly
Son · 1940 · age 25 · b. ~1915 · Illinois
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Sibling
David Kelly
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Kelly
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Kelly
Sibling · 1940 · age 19
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
1940 US Federal Census — Jo-Daviess-County, Illinois
Open full size
1940 US Federal Census — Jo-Daviess-County, Illinois
Page Contents
25 people indexed on this census page (nara:1940:m-t0627-00817-00551)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mattie Twining | 62 | Mother | — | Illinois |
| 2 | Robert Twining | 14 | Son | — | Illinois |
| 3 | Harvey Johnson | 23 | Boarder | Laborer | Iowa |
| 4 | Thomas Quenneberry | 34 | Head | Laborer | Illinois |
| 5 | Wm. Quenneberry | 34 | Brother | Mechanic | Illinois |
| 6 | George Duncan | 58 | Head | Laborer | Wisconsin |
| 7 | Margaret Duncan | 66 | Wife | — | Illinois |
| 8 | Stanley Kestner | 30 | Son | Section | Wisconsin |
| 9 | Doris Kestner | 25 | Daughter | — | Illinois |
| 10 | George Kestner | 4 | Son | — | Illinois |
| 11 | C. R. Mattey | 39 | Head | Manager | Missouri |
| 12 | Alberta Mattey | 34 | Wife | — | Illinois |
| 13 | Margot Mattey | 5 | Daughter | — | Illinois |
| 14 | Charles R. Mattey | 2 | Son | — | Iowa |
| 15 | Judith C. Mattey | 1 | Daughter | — | Iowa |
| 16 | Clark Dear | 45 | Head | Fisherman | Illinois |
| 17 | Carrie Dear | 45 | Wife | — | Iowa |
| 18 | David Dear | 9 | Son | — | Iowa |
| 19 | Edmund Rapp | 40 | Head | Laborer | Illinois |
| 20 | John J. Kelly | 57 | Head | Machinist | Illinois |
| 21 | Lena Kelly | 55 | Wife | — | Illinois |
| 22 | Robert F. Kelly THIS PERSON | 25 | Son | Clerk | Illinois |
| 23 | David P. Kelly | 21 | Son | New Clerk | Illinois |
| 24 | Mary Beth Kelly | 19 | Daughter | Operator | Illinois |
| 25 | James Edw. Kelly | 14 | Son | — | Illinois |
Related Census Records
Pedigree Summary
Robert + 3 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 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)