BS
Barbara Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Knox-County, Illinois
Our Model Tree links this Barbara Smith across the 1920, 1930 and 1940 US Censuses in Knox-County, Illinois (XGBoost, ~Confirmed), with identified parents Errol & Friend — first a daughter (b.~1917), then head of a 7-person household.
Age 23
b. ~1917
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Knox-County, Illinois |
| Surname | Smith |
| Given Name | Barbara W. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Galesburg City |
| 1935 Residence (County) | Knox |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Galesburg City |
| Est. Birth Year | ~1917 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Barbara | Age | Birth yr |
|---|---|---|---|---|
| Mary Smith | Daughter | — | 31 | ~1909 |
| Ruth Smith | Daughter | — | 27 | ~1913 |
| Barbara Smith | Daughter | — | 23 | ~1917 |
| Jane Smith | Daughter | — | 33 | ~1907 |
| Betty Smith | Daughter | — | 36 | ~1904 |
| Fred Smith | Head | — | 62 | ~1878 |
| Mary Smith | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Knox, Illinois
Daughter, age 2
Knox, Illinois · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Knox, Illinois
Daughter, age 13
Knox, Illinois · implied b. ~1917 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Barbara W. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Knox-County, Illinois
Daughter, age 23
Knox-County, Illinois · implied b. ~1917 — 7 household members
| Surname | Smith |
| Given Name | Barbara W. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Galesburg City |
| 1935 Residence (County) | Knox |
| Highest Grade | H 4 |
| 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 Barbara Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Errol Smith (~0.92 confidence) and father Friend Smith (~0.92 confidence) and father Fred Smith (~0.92 confidence) and mother Mary Smith (~0.92 confidence) and mother Mary Smith (~0.92 confidence) and mother Mary Smith (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Errol Smith
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Friend Smith
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Fred Smith
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Barbara Smith
Daughter · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Sibling
Ruth Smith
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Smith
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Smith
Sibling · 1940 · age 36
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Smith
Sibling · 1940 · age 33
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 — Knox-County, Illinois
Open full size
1940 US Federal Census — Knox-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00826-00392)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alfred W. Newcomb | 49 | Head | Teacher | Maine |
| 2 | Lucile S. Newcomb | 45 | Wife | — | Illinois |
| 3 | Helen Bennett | 57 | Head | — | Illinois |
| 4 | Blanche A. May | 66 | Head | — | Illinois |
| 5 | Myra H. Patch | 70 | Head | — | Wisconsin |
| 6 | Eva Jennings | 72 | Head | — | Wisconsin |
| 7 | Bessie Graelle | 63 | Sister | — | Wisconsin |
| 8 | H. S. Whiting | 53 | Head | Cashier | Illinois |
| 9 | Lillian Whiting | 54 | Wife | Seamstress | Illinois |
| 10 | John M. Mcgirr | 35 | Head | Salesman | Illinois |
| 11 | Kathryn Mcgirr | 33 | Wife | — | Virginia |
| 12 | Bessie L. Hinckley | 61 | Head | Secretary | Illinois |
| 13 | Jerome L. Holohan | 75 | Head | Therapeutic Doctor | Illinois |
| 14 | Rose M. Peterson | 43 | Head | — | Illinois |
| 15 | Charles S. Little | 32 | Head | Salesman | Illinois |
| 16 | Harriet E. Little | 26 | Wife | Secretary | Ohio |
| 17 | Iner M. Collins | 52 | Head | Seamstress | Illinois |
| 18 | Marilyn M. Collins | 14 | Daughter | — | Illinois |
| 19 | Henry W. Thompson | 80 | Head | — | Illinois |
| 20 | Mabel Thompson | 54 | Wife | — | Illinois |
| 21 | John R. Mccoy | 33 | Step-son | Farm Hand | Illinois |
| 22 | Fred L. Stewart | 55 | Head | Furniture Merchant | Ohio |
| 23 | Ethel S. Stewart | 50 | Wife | Book Keeper | Illinois |
| 24 | Minnie E. Johnson | 46 | Head | Teacher | Illinois |
| 25 | Eva G. Cecil | 48 | Head | Teacher | Illinois |
| 26 | Ella A. Frederick | 72 | Head | — | Illinois |
| 27 | Crescent C. Frederick | 43 | Son | Salesman | Illinois |
| 28 | Ethel M. Johnson | 50 | Maid | Maid | Illinois |
| 29 | Donald M. Norton | 29 | Head | Visiting Clerk | Illinois |
| 30 | Clarabelle A. Norton | 20 | Wife | — | Iowa |
| 31 | Ronald M. Norton | 3 | Son | — | Illinois |
| 32 | Cora H. Kegley | 64 | Aunt | — | Illinois |
| 33 | Fred G. Smith | 62 | Head | — | Iowa |
| 34 | Mary E. Smith | 61 | Wife | — | Illinois |
| 35 | Betty G. Smith | 36 | Daughter | Book Keeper | Illinois |
| 36 | Jane L. Smith | 33 | Daughter | Photo Finisher | Illinois |
| 37 | Mary E. Smith | 31 | Daughter | Secretary | Illinois |
| 38 | Ruth G. Smith | 27 | Daughter | Clerical Work | Illinois |
| 39 | Barbara W. Smith THIS PERSON | 23 | Daughter | — | Illinois |
| 40 | Henry L. Wilson | 36 | Head | Merchant | Texas |
Related Census Records
Pedigree Summary
Barbara + 4 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)