JL
James Leonard — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this James Leonard across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed), with identified parents Catherine & Edwin — first a son (b.~1920), then head of a 4-person household.
Age 20
b. ~1920
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Leonard |
| Given Name | James A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Occupation | Draftsman |
| Industry | Dept Automotive |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | 9 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Draftsman |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1920 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Jean Leonard | Daughter | — | 15 | ~1925 |
| Fredric Leonard | Head | — | 56 | ~1884 |
| James Leonard | Son | — | 20 | ~1920 |
| Catherine Leonard | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Wayne, Michigan
Son, age
Wayne, Michigan · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | James A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Wayne, Michigan
Son, age 10
Wayne, Michigan · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | James G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Son, age 20
Wayne-County, Michigan · implied b. ~1920 — 4 household members
| Surname | Leonard |
| Given Name | James A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Occupation | Draftsman |
| Industry | Dept Automotive |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | 9 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 James Leonard across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Catherine Leonard (~0.92 confidence) and father Edwin Leonard (~0.92 confidence) and father Fredric Leonard (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Catherine Leonard
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
Edwin Leonard
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Fredric Leonard
b. ~1884
Source father
● Household
· direct · ~0.92
This person
Anchor record
James Leonard
Son · 1940 · age 20 · b. ~1920 · Michigan
★ You are viewing this record
Sibling
Jean Leonard
Sibling · 1940 · age 15
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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01870-00263)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Burton A Backwell | 45 | Head | Teacher | Michigan |
| 42 | Leona Backwell | 43 | Wife | Teacher | Michigan |
| 43 | Leda L Elder | 59 | Wife | Operator | Michigan |
| 44 | Shirley E Elder | 17 | Daughter | — | Michigan |
| 45 | Lois M Elder | 10 | Daughter | — | Michigan |
| 46 | Line Vacant | None | — | — | — |
| 47 | Line Vacant | None | — | — | — |
| 48 | Line Vacant | None | — | — | — |
| 49 | Alfred Mcclellan | 24 | Head | Manager | Michigan |
| 50 | Bernice Mcclellan | 20 | Wife | Stenographer | Missouri |
| 51 | Frank A Vogt | 65 | Head | Salesman | Germany |
| 52 | Maude E Vogt | 66 | Wife | — | Michigan |
| 53 | Frank C Bunn | 44 | Head | Plumber | New York |
| 54 | Eva J Bunn | 42 | Wife | — | Indiana |
| 55 | Richard Bunn | 5 | Son | — | Michigan |
| 56 | James Lindsay | 69 | Head | Broker | Scotland |
| 57 | Sarah Lindsay | 65 | Wife | — | Scotland |
| 58 | George G Lindsay | 21 | Son | Tool & Die Maker | Scotland |
| 59 | John Ryan | 39 | Head | Machinist | Ohio |
| 60 | Genevieve Ryan | 36 | Wife | Stenographer | Canada-Eng |
| 61 | Herbert S Stanford | 42 | Head | Grinder | Cincinnati |
| 62 | Elizabeth Stanford | 46 | Wife | Saleslady | Arkansas |
| 63 | Ernest M Vanderhoff | 27 | Head | Fireman | Michigan |
| 64 | Jane E Vanderhoff | 22 | Wife | Surveyor | Michigan |
| 65 | Clifford W Ballard | 36 | Head | Window Cleaner | Washington D.C. |
| 66 | Ruth A Ballard | 31 | Wife | — | Illinois |
| 67 | Shirley A Ballard | 12 | Daughter | — | Michigan |
| 68 | Beverly B Ballard | 8 | Daughter | — | Michigan |
| 69 | Wesley C Ballard | 5 | Son | — | Michigan |
| 70 | Joseph M Haelin | 57 | Head | Elec. Crane Operator | Kentucky |
| 71 | Frances K Haelin | 54 | Wife | — | Germany |
| 72 | Louise E Haelin | 27 | Daughter | Stenographer | Kentucky |
| 73 | Josephine M Haelin | 23 | Daughter | Bulb Changer | Kentucky |
| 74 | Fredric A Leonard | 56 | Head | Mover & Storage | Michigan |
| 75 | Catherine A Leonard | 54 | Wife | — | Michigan |
| 76 | James A Leonard THIS PERSON | 20 | Son | Draftsman | Michigan |
| 77 | Jean R Leonard | 15 | Daughter | — | Michigan |
| 78 | Thomas Earl Lester | 59 | Head | Salesman | Michigan |
| 79 | Catherine A Lester | 57 | Wife | Seamstress | Indiana |
| 80 | Thomas Earl Lester | 14 | Son | — | Michigan |
Pedigree Summary
James + 1 sibling
Gen 1 · 3 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)