RL
Robert Lucas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Robert Lucas across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Frank & John — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Head Bell Hop |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 770 |
| Highest Grade | C 1 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Head Bell Hop |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Esther Lucas | Spouse | — | 53 | ~1887 |
| Catherine Lucas | Daughter | — | 12 | ~1928 |
| Lucy Lucas | Daughter | — | 29 | ~1911 |
| John Lucas | Head | — | 53 | ~1887 |
| Robert Lucas | Son | — | 22 | ~1918 |
| John Lucas | Son | — | 20 | ~1920 |
Census Appearances
1920
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 22
Cook-County, Illinois · implied b. ~1918 — 6 household members
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Head Bell Hop |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 770 |
| Highest Grade | C 1 |
| 1935 Residence | Same House |
| 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 Lucas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Lucas (~0.92 confidence) and father John Lucas (~0.92 confidence) and father John Lucas (~0.92 confidence) and mother Anna Lucas (~0.92 confidence) and mother Esther Lucas (~0.92 confidence) and mother Esther Lucas (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Lucas
b. ~1894
Source father
● Household
· direct · ~0.92
Father
John Lucas
b. ~1887
Source father
● Household
· direct · ~0.92
Father
John Lucas
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Anna Lucas
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Esther Lucas
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Esther Lucas
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Lucas
Son · 1940 · age 22 · b. ~1918 · Illinois
★ You are viewing this record
Sibling
John Lucas
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Lucas
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucy Lucas
Sibling · 1940 · age 29
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00977-00575)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Agnes Riley | 38 | Housekeeper | Housekeeper | Illinois |
| 2 | Mike Marinello | 40 | Head | Water Pipe Attendant | Illinois |
| 3 | Rose Marinello | 34 | Wife | — | New York |
| 4 | Margaret Marinello | 16 | Daughter | — | Illinois |
| 5 | Rosa Marinello | 13 | Daughter | — | Illinois |
| 6 | Anthony Marinello | 8 | Son | — | Illinois |
| 7 | John Coronato | 32 | Head | Alley Cleaner | Illinois |
| 8 | Theresa Coronato | 26 | Wife | — | Illinois |
| 9 | Nicholas Coronato | 63 | Head | Plasterer | Italy |
| 10 | Filomara Coronato | 57 | Wife | — | Italy |
| 11 | George Coronato | 29 | Son | Abstractor | Illinois |
| 12 | Peter Coronato | 21 | Son | Stamper | Illinois |
| 13 | Raphael Fortunato | 68 | Head | — | Italy |
| 14 | Elsie Fortunato | 33 | Daughter | Machine Op. | Illinois |
| 15 | Joseph Fortunato | 27 | Son | Presser | Illinois |
| 16 | Tessie E. Weiss | 44 | Daughter | — | Illinois |
| 17 | Mary Clark | 43 | Head | — | Illinois |
| 18 | Catherine Clark | 20 | Daughter | Inspector | Illinois |
| 19 | John Clark | 9 | Son | — | Illinois |
| 20 | Catherine Riley | 66 | Mother | — | Illinois |
| 21 | George La Pone | 37 | Head | Repair Man | France |
| 22 | Lucille La Pone | 38 | Wife | — | Illinois |
| 23 | Anthony La Pone | 10 | Son | — | Illinois |
| 24 | Delores La Pone | 7 | Daughter | — | Illinois |
| 25 | John Lucas | 53 | Head | Bus Driver | Illinois |
| 26 | Esther Lucas | 53 | Wife | Proprietress | Illinois |
| 27 | Lucy Lucas | 29 | Daughter | Comptometer Operator | Illinois |
| 28 | Robert Lucas THIS PERSON | 22 | Son | Head Bell Hop | Illinois |
| 29 | John Lucas | 20 | Son | New Worker | Illinois |
| 30 | Catherine Lucas | 12 | Daughter | — | Illinois |
| 31 | Angelo Fallo | 66 | Head | Stationary Engin. | Italy |
| 32 | Ella Fallo | 55 | Wife | — | Finland |
| 33 | Joseph Fillicaro | 43 | Head | Sponger | Illinois |
| 34 | Bella Fillicaro | 38 | Wife | — | Illinois |
| 35 | Anthony Fillicaro | 11 | Son | — | Illinois |
| 36 | Caroline Fillicaro | 8 | Daughter | — | Illinois |
| 37 | Antoinette Franutolo | 50 | Head | — | Italy |
| 38 | Josephine Franutolo | 21 | Daughter | Packer | Illinois |
| 39 | Elizabeth Franutolo | 19 | Daughter | Packer | Illinois |
| 40 | Santo Conoscenti | 24 | Head | Barber | Illinois |
Pedigree Summary
Robert + 3 siblings
Gen 1 · 6 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)