RL
Robert Leonard — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allen-County, Ohio
Our Model Tree links this Robert Leonard across the 1930 and 1940 US Censuses in Allen-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 13-person household.
Age 21
b. ~1919
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allen-County, Ohio |
| Surname | Leonard |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Lima |
| 1935 Residence (County) | Allen |
| Additional Details | |
| Occupation | Labor |
| Industry | Buckey Reling |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 340 |
| Highest Grade | H 2 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Labor |
| Township / Ward | Lima |
| 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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Leonard | Son | — | 21 | ~1919 |
| Kathryn Klingler | Other | — | 18 | ~1922 |
| Ora Ellis | Other | — | 35 | ~1905 |
| Blanche Leonard | Daughter | — | 19 | ~1921 |
| Mary Leonard | Spouse | — | 43 | ~1897 |
| Kenneth Leonard | Son | — | 14 | ~1926 |
| Deloris Sheen | Other | — | 32 | ~1908 |
| Betty Welch | Daughter | — | 12 | ~1928 |
| Annette Wernal | Other | — | 24 | ~1916 |
| Clifford Leonard | Head | — | 52 | ~1888 |
| Lanty Klingler | Other | — | 20 | ~1920 |
| Joseph Welch | Spouse | — | 34 | ~1906 |
| Donald Leonard | Son | — | 16 | ~1924 |
Census Appearances
1930
Allen, Ohio
Son, age 11
Allen, Ohio · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Allen-County, Ohio
Son, age 21
Allen-County, Ohio · implied b. ~1919 — 13 household members
| Surname | Leonard |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Lima |
| 1935 Residence (County) | Allen |
| Occupation | Labor |
| Industry | Buckey Reling |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 340 |
| Highest Grade | H 2 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Leonard across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Leonard
Son · 1940 · age 21 · b. ~1919 · Ohio
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Sibling
Betty Welch
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Leonard
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Leonard
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Blanche Leonard
Sibling · 1940 · age 19
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 — Allen-County, Ohio
Open full size
1940 US Federal Census — Allen-County, Ohio
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-03020-00928)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mrs Paul Thomson | 23 | wife | — | Ohio |
| 42 | Richard Thomson | 4 | son | — | Ohio |
| 43 | Clifford Leonard | 52 | head | Labor | Ohio |
| 44 | Mary Leonard | 43 | wife | — | Ohio |
| 45 | Robert Leonard THIS PERSON | 21 | son | Labor | Ohio |
| 46 | Blanche Leonard | 19 | daughter | — | Ohio |
| 47 | Donald Leonard | 16 | son | — | Ohio |
| 48 | Kenneth Leonard | 14 | son | — | Ohio |
| 49 | Lanty W Klingler | 20 | lodger | Labor | Ohio |
| 50 | Kathryn Klingler | 18 | lodger | — | Ohio |
| 51 | Annette Wernal | 24 | niece | Stenographer | Ohio |
| 52 | Ora Ellis | 35 | lodger | Office Clerk | Ohio |
| 53 | Deloris Sheen | 32 | aunt | — | Ohio |
| 54 | Joseph R. Mrs. Welch | 34 | wife | P.B.X. Operator | Ohio |
| 55 | Betty Jean Welch | 12 | daughter | — | Ohio |
| 56 | Ethel M. Asher | 55 | head | Teacher | Ohio |
| 57 | Beren Hazel Asher | 40 | daughter | Teacher | Ohio |
| 58 | William Moyer | 41 | head | Cement Worker | Germany |
| 59 | Inez Moyer | 30 | wife | — | Ohio |
| 60 | Harvey Moyer | 13 | son | — | Ohio |
| 61 | Irma Moyer | 9 | daughter | — | Ohio |
| 62 | Wilhelmina Moyer | 8 | daughter | — | Ohio |
| 63 | William Oafley | 24 | head | Toolmaker | Ohio |
| 64 | Ilma Oafley | 20 | wife | — | Ohio |
| 65 | Gary Oafley | 1 | son | — | Ohio |
| 66 | Edward Zink | 81 | lodger | — | Ohio |
| 67 | Elizabeth Zink | 76 | lodger | — | Ohio |
| 68 | Mary Tate | 82 | lodger | — | Ohio |
| 69 | James Mc Ginley | 23 | lodger | Music Teacher | Penn |
| 70 | Lilly Kammerer | 5 | daughter | — | Ohio |
| 71 | Edward Jr. Zapp | 12 | son | — | Ohio |
| 72 | James X Alexander | 1 | son | — | Ohio |
| 73 | Pauline M Pool | 56 | housekeeper | Deputy Auditor | Ohio |
| 74 | Earl Harlan | 27 | head | Grain Trader | Penna |
| 75 | Elizabeth Harlan | 17 | wife | — | Ohio |
| 76 | Almira O Morris | 68 | head | Sales Woman | Ohio |
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)