JL
James Lucas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Gogebic-County, Michigan
Our Model Tree links this James Lucas across the 1930 and 1940 US Censuses in Gogebic-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Gogebic-County, Michigan |
| Surname | Lucas |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Bessemer city |
| 1935 Residence (County) | Gogebic |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Bessemer City |
| Est. Birth Year | ~1927 |
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 |
|---|---|---|---|---|
| Barbara Lucas | Daughter | — | 19 | ~1921 |
| Ruth Lucas | Daughter | — | 9 | ~1931 |
| Margaret Lucas | Daughter | — | 17 | ~1923 |
| Magdalene Lucas | Head | — | 54 | ~1886 |
| John Lucas | Son | — | 21 | ~1919 |
| William Lucas | Son | — | 15 | ~1925 |
| James Lucas | Son | — | 13 | ~1927 |
Census Appearances
1930
Gogebic, Michigan
Son, age 1
Gogebic, Michigan · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Austria |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Gogebic-County, Michigan
Son, age 13
Gogebic-County, Michigan · implied b. ~1927 — 7 household members
| Surname | Lucas |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Bessemer city |
| 1935 Residence (County) | Gogebic |
| Highest Grade | No 6 |
| 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 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 13 · b. ~1927 · Michigan
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Sibling
Barbara Lucas
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Lucas
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lucas
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Lucas
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Lucas
Sibling · 1940 · age 17
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 — Gogebic-County, Michigan
Open full size
1940 US Federal Census — Gogebic-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01752-00041)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Ab Lalich | 21 | Son | Senior Clerk | Michigan |
| 2 | Katherine Lalich | 20 | Daughter | Vital Statistics | Michigan |
| 3 | Stephania Lalich | 16 | Daughter | — | Michigan |
| 4 | Elizabeth Carlson | 56 | Head | — | Finland |
| 5 | Conrad Ab Carlson | 26 | Son | General Laborer | Michigan |
| 6 | Clifford Carlson | 19 | Son | General Laborer | Michigan |
| 7 | Clarence Carlson | 17 | Son | General Laborer | Michigan |
| 8 | Eugene Carlson | 14 | Son | — | Michigan |
| 9 | Mary Mylnarck | 67 | Head | — | Wisconsin |
| 10 | John Mylnarck | 34 | Son | Wood Construction | Michigan |
| 11 | Erick Erickson | 62 | Head | — | Finland |
| 12 | Walter Erickson | 27 | Son | S-Clerk | Michigan |
| 13 | Emma Jacobson | 64 | Head | — | Finland |
| 14 | Thure Jacobson | 41 | Son | General Laborer | Michigan |
| 15 | August Stonemark | 48 | Head | General Laborer | Michigan |
| 16 | Fannie Stonemark | 43 | Wife | — | Michigan |
| 17 | Faye Stonemark | 3 | Daughter | — | Michigan |
| 18 | Vincent Koncharge | 67 | Head | Road Construction | Jugo-Slavia |
| 19 | Emily Koncharge | 55 | Wife | — | Czecho-Slovakia |
| 20 | Louis Koncharge | 27 | Son | Janitor | Michigan |
| 21 | Helga Johnson | 60 | Head | — | Sweden |
| 22 | Lloyd Johnson | 39 | Son | — | Michigan |
| 23 | Elvira Johnson | 34 | Daughter | — | Michigan |
| 24 | Waldo Johnson | 27 | Son | Road Construction | Michigan |
| 25 | Margaret Johnson | 19 | Daughter | Assistant | Michigan |
| 26 | Florence Johnson | 16 | Daughter | Dishwasher | Michigan |
| 27 | Magdalene Lucas | 54 | Head | — | Jugo-Slavia |
| 28 | John Lucas | 21 | Son | Tool Checker | Michigan |
| 29 | Barbara Lucas | 19 | Daughter | New Worker | Michigan |
| 30 | Margaret Lucas | 17 | Daughter | — | Michigan |
| 31 | William Lucas | 15 | Son | — | Michigan |
| 32 | James Lucas THIS PERSON | 13 | Son | — | Michigan |
| 33 | Ruth Lucas | 9 | Daughter | — | Michigan |
| 34 | Alma Sanquist | 74 | Head | — | Sweden |
| 35 | Thomas Kovacevich | 50 | Head | Miner | Jugo-Slavia |
| 36 | Magdalene Kovacevich | 50 | Wife | — | Jugo-Slavia |
| 37 | Mary Ab Kovacevich | 21 | Daughter | — | Michigan |
| 38 | George Ab Kovacevich | 19 | Son | Night Attendant | Michigan |
| 39 | Joseph Kovacevich | 25 | Son | Body Man | Michigan |
| 40 | Magdalene Kovacevich | 14 | Daughter | — | Michigan |
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)