WB
William Blair — 1940 US Census Record
Model Tree available1940 United States Federal Census · Morgan-County, Kentucky
Our Model Tree links this William Blair across the 1920, 1930 and 1940 US Censuses in Morgan-County, Kentucky (XGBoost, ~Confirmed), with identified parents Luther & Lillian — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Morgan-County, Kentucky |
| Surname | Blair |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | West Liberty |
| 1935 Residence (County) | Morgan |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | West Liberty |
| Est. Birth Year | ~1919 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Martha Blair | Daughter | — | 14 | ~1926 |
| Luther Blair | Head | — | 48 | ~1892 |
| William Blair | Son | — | 21 | ~1919 |
| James Blair | Son | — | 14 | ~1926 |
| Lillian Blair | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Morgan, Kentucky
Son, age 1
Morgan, Kentucky · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Naturalization Status | Naturalized |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Mother Tongue | English |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Morgan, Kentucky
Son, age 12
Morgan, Kentucky · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | William A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Morgan-County, Kentucky
Son, age 21
Morgan-County, Kentucky · implied b. ~1919 — 5 household members
| Surname | Blair |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | West Liberty |
| 1935 Residence (County) | Morgan |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Blair across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Luther Blair (~0.92 confidence) and mother Lillian Blair (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Luther Blair
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Lillian Blair
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Blair
Son · 1940 · age 21 · b. ~1919 · Kentucky
★ You are viewing this record
Sibling
Martha Blair
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Blair
Sibling · 1940 · age 14
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 — Morgan-County, Kentucky
Open full size
1940 US Federal Census — Morgan-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01343-00355)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Herbert Wells | 26 | Head | Material Insp | Kentucky |
| 2 | Helen Wells | 18 | Wife | — | Kentucky |
| 3 | Stanley Ryan | 23 | Head | Merchant | Ireland |
| 4 | Christine Ryan | 23 | Wife | — | Kentucky |
| 5 | Ronnie Ryan | 0 | Son | — | Kentucky |
| 6 | Graydon Mcguire | 52 | Head | — | Kentucky |
| 7 | Lorene Mcguire | 59 | Sister | Lawyer | Kentucky |
| 8 | S. F. Perry | 53 | Head | Treasurer | Kentucky |
| 9 | Maude Perry | 53 | Wife | — | Kentucky |
| 10 | Bess Allen | 33 | Daughter | Teacher | Kentucky |
| 11 | Henry Allen | 6 | Grandson | — | Kentucky |
| 12 | John H. Elam | 58 | Brother-in-law | — | Kentucky |
| 13 | Sherman Lewis | 73 | Father-in-law | — | Kentucky |
| 14 | Alena Roland | 27 | Boarder | Waitress | Kentucky |
| 15 | Monk Gillum | 28 | Head | Supervisor | Kentucky |
| 16 | Irene Gillum | 24 | Wife | — | Kentucky |
| 17 | Pauline Gillum | 7 | Daughter | — | Kentucky |
| 18 | Billy Duke Gillum | 2 | Son | — | Kentucky |
| 19 | Gladys Petitt | 17 | Helper | House Keeper | Kentucky |
| 20 | Luther Blair | 48 | Head | Farmer | Kentucky |
| 21 | Lillian Blair | 44 | Wife | — | Kentucky |
| 22 | William Blair THIS PERSON | 21 | Son | — | Kentucky |
| 23 | Martha Blair | 14 | Daughter | — | Kentucky |
| 24 | James Blair | 14 | Son | — | Kentucky |
| 25 | Carl Reese | 30 | Head | Band Director | Kentucky |
| 26 | Ruth Reese | 24 | Wife | — | Kentucky |
| 27 | Jay Benton | 25 | Head | Clerk | Kentucky |
| 28 | Edna Benton | 28 | Wife | Teacher | Kentucky |
| 29 | Will Taulbee | 27 | Boarder | Teacher | Kentucky |
| 30 | Lonzo Elam | 36 | Head | Storekeeper | Kentucky |
| 31 | Elizabeth Elam | 31 | Wife | Teacher | Kentucky |
| 32 | Sue Elam | 5 | Daughter | — | Kentucky |
| 33 | Oscar Pelfrey | 44 | Head | Ath Officer | Kentucky |
| 34 | Chloie Pelfrey | 50 | Wife | — | Kentucky |
| 35 | Earl Pelfrey | 24 | Son | Asst | Kentucky |
| 36 | Vista Pelfrey | 24 | Daughter-in-law | Teacher | Kentucky |
| 37 | Vista Gardner | 20 | Daughter | — | Kentucky |
| 38 | Extra Line | None | — | — | — |
| 39 | Extra Line | None | — | — | — |
| 40 | Charley Turner | 56 | Head | Carpenter | Kentucky |
Pedigree Summary
William + 2 siblings
Gen 1 · 2 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)