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William Donnelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this William Donnelly across the 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Donnelly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1925 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Ruth Donnelly | Daughter | — | 17 | ~1923 |
| Imelda Donnelly | Daughter | — | 24 | ~1916 |
| Mary Donnelly | Daughter | — | 20 | ~1920 |
| Frank Donnelly | Head | — | 50 | ~1890 |
| William Donnelly | Son | — | 15 | ~1925 |
| Blanche Donnelly | Spouse | — | 50 | ~1890 |
Census Appearances
1930
Jefferson, Kentucky
Son, age 5
Jefferson, Kentucky · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Son, age 15
Jefferson-County, Kentucky · implied b. ~1925 — 6 household members
| Surname | Donnelly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Donnelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Donnelly
Son · 1940 · age 15 · b. ~1925 · Kentucky
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Sibling
Mary Donnelly
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Donnelly
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Imelda Donnelly
Sibling · 1940 · age 24
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 — Jefferson-County, Kentucky
Open full size
1940 US Federal Census — Jefferson-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01375-00033)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Grady J Dentsch | 15 | Daughter | — | Kentucky |
| 42 | Shelby Dentsch | 13 | Son | — | Kentucky |
| 43 | Claude Dentsch | 11 | Son | — | Kentucky |
| 44 | John O'Neil | 58 | Head | Storer | Tennessee |
| 45 | Ida O'Neil | 54 | Wife | — | Tennessee |
| 46 | Clarence O'Neil | 32 | Son | Helper | Tennessee |
| 47 | Magnus Martins | 70 | Head | — | Denmark |
| 48 | Oree L Buckner | 24 | Boarder | — | Pennsylvania |
| 49 | Lamar Haley | 25 | Head | Cooper | Arkansas |
| 50 | Mable Haley | 25 | Wife | — | Arkansas |
| 51 | Stanley Haley | 6 | Son | — | Arkansas |
| 52 | David Haley | 4 | Son | — | Arkansas |
| 53 | Francilla Haley | 2 | Daughter | — | Arkansas |
| 54 | Zeb Mullikin | 35 | Head | Laborer | Arkansas |
| 55 | Opal Mullikin | 27 | Wife | — | Texas |
| 56 | Edna Mullikin | 9 | Daughter | — | Arkansas |
| 57 | Frank Anderson | 48 | Head | Laborer | Arkansas |
| 58 | Elizabeth Anderson | 47 | Wife | — | Arkansas |
| 59 | Lula Anderson | 18 | Daughter | Laborer | Arkansas |
| 60 | Loretta Harris | 74 | Mother-in-law | — | Arkansas |
| 61 | Eulas Neren | 27 | Black | — | — |
| 62 | Frank Donnelly | 50 | Head | Bartender | Indiana |
| 63 | Blanche Donnelly | 50 | Wife | — | Indiana |
| 64 | Imelda Donnelly | 24 | Daughter | Telephone Operator | Kentucky |
| 65 | Mary B Donnelly | 20 | Daughter | — | Kentucky |
| 66 | Ruth Donnelly | 17 | Daughter | — | Kentucky |
| 67 | William Donnelly THIS PERSON | 15 | Son | — | Kentucky |
| 68 | Easter Embry | 44 | Head | Proprietor | Kentucky |
| 69 | Ina Embry | 39 | Wife | — | Kentucky |
| 70 | Constance Embry | 18 | Daughter | — | Kentucky |
| 71 | Jo-Anna Embry | 11 | Daughter | — | Kentucky |
| 72 | E. Russell Harlow | 46 | Head | Mechanic Helper | Kentucky |
| 73 | Verna Harlow | 43 | Wife | — | Kentucky |
| 74 | Pattie Lawson | 57 | Head | Meter Reader | Kentucky |
| 75 | Allen Lawson | 23 | Son | Meter Reader | Kentucky |
| 76 | J. H. Hornback | 59 | Head | Shipping Clerk | Kentucky |
| 77 | Lettie Hornback | 50 | Wife | — | Kentucky |
| 78 | Elva Foster | 25 | Daughter | Truck Driver | Kentucky |
| 79 | Robert Brant | 22 | Head | Department Manager | Kentucky |
| 80 | Margaret Brant | 19 | Wife | — | Kentucky |
Related Census Records
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)