JL
John Leahy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lawrence-County, Indiana
Our Model Tree links this John Leahy across the 1930 and 1940 US Censuses in Lawrence-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lawrence-County, Indiana |
| Surname | Leahy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | BEDFORD CITY |
| 1935 Residence (County) | LAWRENCE |
| Additional Details | |
| Occupation | Cement Finisher Master |
| Industry | Golf Links |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 300 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Cement Finisher Master |
| Township / Ward | Bedford City |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mabel Leahy | Spouse | — | 48 | ~1892 |
| Ruth Leahy | Daughter | — | 18 | ~1922 |
| George Leahy | Son | — | 16 | ~1924 |
| Mary Leahy | Daughter | — | 11 | ~1929 |
| Minnie Sharp | Other | — | 67 | ~1873 |
| William Leahy | Head | — | 53 | ~1887 |
| John Leahy | Son | — | 21 | ~1919 |
| Herschell Leahy | Son | — | 27 | ~1913 |
Census Appearances
1930
Lawrence, Indiana
Son, age 11
Lawrence, Indiana · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leahy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Lawrence-County, Indiana
Son, age 21
Lawrence-County, Indiana · implied b. ~1919 — 8 household members
| Surname | Leahy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | BEDFORD CITY |
| 1935 Residence (County) | LAWRENCE |
| Occupation | Cement Finisher Master |
| Industry | Golf Links |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 300 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 John Leahy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Leahy
Son · 1940 · age 21 · b. ~1919 · Indiana
★ You are viewing this record
Sibling
Ruth Leahy
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Leahy
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herschell Leahy
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Leahy
Sibling · 1940 · age 16
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 — Lawrence-County, Indiana
Open full size
1940 US Federal Census — Lawrence-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01071-00540)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Norma Jean Veirs | 5 | Daughter | — | Indiana |
| 2 | Lee Young | 35 | Head | Painter & Laborer | Indiana |
| 3 | Agnes Young | 30 | Wife | Machine Operator | Indiana |
| 4 | John Smith | 61 | Father-in-law | — | Indiana |
| 5 | William Leahy | 53 | Head | Traveling Salesman | Indiana |
| 6 | Mabel Leahy | 48 | Wife | — | Indiana |
| 7 | Herschell Leahy | 27 | Son | Laborer | Indiana |
| 8 | John Leahy THIS PERSON | 21 | Son | Cement Finisher Master | Indiana |
| 9 | Ruth Leahy | 18 | Daughter | — | Indiana |
| 10 | George Leahy | 16 | Son | — | Indiana |
| 11 | Mary Ellen Leahy | 11 | Daughter | — | Indiana |
| 12 | Minnie Sharp | 67 | Mother-in-law | — | Indiana |
| 13 | Vera East | 31 | Head | Laundress | Indiana |
| 14 | Ella May East | 13 | Daughter | — | Indiana |
| 15 | Lena Thomas | 38 | Head | — | Kentucky |
| 16 | Aubrey Thomas | 10 | Son | — | Indiana |
| 17 | Eugene Thomas | 8 | Son | — | Indiana |
| 18 | Norma Thomas | 5 | Daughter | — | Indiana |
| 19 | Alonzo Allen | 74 | Head | — | Indiana |
| 20 | Myrtle Allen | 68 | Wife | — | Indiana |
| 21 | Isaac Duncan | 68 | Head | Laborer | Indiana |
| 22 | Bertha Duncan | 61 | Wife | — | Indiana |
| 23 | Head G. Cleveland | None | M | Road Improvement | — |
| 24 | Ida G. Cleveland | 50 | Wife | — | Indiana |
| 25 | Robert G. Cleveland | 20 | Son | Laborer | Indiana |
| 26 | Warren G. Cleveland | 17 | Son | — | Indiana |
| 27 | Chester G. Cleveland | 13 | Son | — | Indiana |
| 28 | Walter Pollard | 39 | Head | Car Blocker | Indiana |
| 29 | George Pollard | 21 | Son | — | Indiana |
| 30 | James E. Pollard | 19 | Son | New Worker | Indiana |
| 31 | Clyde Pollard | 16 | Son | — | Indiana |
| 32 | Mildred Pollard | 14 | Daughter | — | Indiana |
| 33 | Mary Isis Young | 39 | Head | — | Indiana |
| 34 | Hugh F. Young | 14 | Son | — | Indiana |
| 35 | Robert L. Young | 12 | Son | — | Indiana |
| 36 | Wright J. Sanders | 75 | Head | — | Indiana |
| 37 | Raymond Gilson | 37 | Head | Laborer | Canada |
| 38 | Dorothy Gilson | 32 | Wife | Trimmer | Indiana |
| 39 | Helen Gilson | 13 | Daughter | — | Indiana |
| 40 | Raymond Jr. Gilson | 11 | Son | — | Indiana |
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)