JL
James Lucas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, Ohio
Our Model Tree links this James Lucas across the 1930 and 1940 US Censuses in Union-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, Ohio |
| Surname | Lucas |
| Given Name | James R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Fairfield |
| Additional Details | |
| Occupation | Housework |
| Industry | At Home |
| Class of Worker | UP |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | S 8 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Housework |
| Township / Ward | Milford Center Village |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Jane Lucas | Daughter | — | 3 | ~1937 |
| Ruth Lucas | Daughter | — | 5 | ~1935 |
| Wanda Lucas | Daughter | — | 13 | ~1927 |
| Helen Lucas | Daughter | — | 10 | ~1930 |
| Wade Lucas | Head | — | 35 | ~1905 |
| John Lucas | Son | — | 16 | ~1924 |
| James Lucas | Son | — | 15 | ~1925 |
Census Appearances
1930
Union, Ohio
Son, age 5
Union, Ohio · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | James R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Union-County, Ohio
Son, age 15
Union-County, Ohio · implied b. ~1925 — 7 household members
| Surname | Lucas |
| Given Name | James R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Fairfield |
| Occupation | Housework |
| Industry | At Home |
| Class of Worker | UP |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | S 8 |
| 1935 Residence | Ohio |
| 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 James Lucas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Lucas
Son · 1940 · age 15 · b. ~1925 · Ohio
★ You are viewing this record
Sibling
Helen Lucas
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Lucas
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lucas
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wanda Lucas
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Lucas
Sibling · 1940 · age 3
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 — Union-County, Ohio
Open full size
1940 US Federal Census — Union-County, Ohio
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03162-00486)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary G. Post | 28 | Wife | — | Ohio |
| 2 | Howard F. Post | 4 | Son | 0 | Ohio |
| 3 | Hugh L. Post | 1 | Son | 0 | Ohio |
| 4 | Elmer Adams | 69 | Head | — | Ohio |
| 5 | Providence Adams | 67 | Wife | — | Ohio |
| 6 | Marlow Cloughenour | 63 | Head | Carpenter | Ohio |
| 7 | Theodore R. Cloughenour | 33 | Son | — | Ohio |
| 8 | Lucy L. White | 60 | Head | — | Ohio |
| 9 | Alvin Blumenschein | 27 | Son-in-law | Salesman | Ohio |
| 10 | Viola Blumenschein | 27 | Daughter | Assistant Postmaster | Ohio |
| 11 | Elsworth Rice | 68 | Lodger | — | Ohio |
| 12 | Lenard O. Hayes | 43 | Head | Section Foreman | Ohio |
| 13 | Flora B. Hayes | 36 | Wife | — | Ohio |
| 14 | Lenard O. Jr. Hayes | 19 | Son | Laborer | Ohio |
| 15 | Richard D. Hayes | 10 | Son | — | Ohio |
| 16 | Janice E. Hayes | 5 | Daughter | — | Ohio |
| 17 | Chester M. Freed | 38 | Head | Truck Driver | Illinois |
| 18 | Willie Anna Freed | 36 | Wife | — | Ohio |
| 19 | Frederick G. Freed | 18 | Son | Laborer | Ohio |
| 20 | Lester R. Freed | 17 | Son | Laborer | Ohio |
| 21 | Mildred M. Freed | 10 | Daughter | — | Ohio |
| 22 | James F. Huffman | 54 | Head | Laborer | Ohio |
| 23 | Mamie E. Huffman | 44 | Wife | Laundress | Ohio |
| 24 | Bernice L. Huffman | 9 | Daughter | — | Ohio |
| 25 | Betty R. Huffman | 6 | Daughter | — | Ohio |
| 26 | Wade S. Lucas | 35 | Head | — | Ohio |
| 27 | John K. Lucas | 16 | Son | Laborer | Ohio |
| 28 | James R. Lucas THIS PERSON | 15 | Son | Housework | Ohio |
| 29 | Wanda L. Lucas | 13 | Daughter | — | Ohio |
| 30 | Helen J. Lucas | 10 | Daughter | — | Ohio |
| 31 | Ruth E. Lucas | 5 | Daughter | — | Ohio |
| 32 | Jane M. Lucas | 3 | Daughter | — | Ohio |
| 33 | Carl L. Reed | 32 | Head | Laborer | West Virginia |
| 34 | Lucile N. Reed | 29 | Wife | — | Ohio |
| 35 | Evelyn A. Reed | 14 | Daughter | — | Ohio |
| 36 | Mary L. Reed | 12 | Daughter | — | Ohio |
| 37 | Anna L. Reed | 10 | Daughter | — | Ohio |
| 38 | James W. Reed | 4 | Son | — | Ohio |
| 39 | Edgar A. Reed | 1 | Son | — | 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)