BC
Betty Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Indiana
Our Model Tree links this Betty Clark across the 1930 and 1940 US Censuses in Lake-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Indiana |
| Surname | Clark |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Hammond City |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Hammond City |
| Est. Birth Year | ~1926 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| Betty Clark | Daughter | — | 14 | ~1926 |
| Bernice Clark | Daughter | — | 22 | ~1918 |
| Homer Clark | Head | — | 54 | ~1886 |
| Robert Clark | Son | — | 20 | ~1920 |
| Charles Clark | Son | — | 17 | ~1923 |
| Homer Clark | Son | — | 28 | ~1912 |
| Donald Clark | Son | — | 24 | ~1916 |
| Amy Clark | Spouse | — | 53 | ~1887 |
| Richard Clark | Son | — | 28 | ~1912 |
Census Appearances
1930
Lake, Indiana
Daughter, age 4
Lake, Indiana · implied b. ~1926 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Betty C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Texas |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lake-County, Indiana
Daughter, age 14
Lake-County, Indiana · implied b. ~1926 — 9 household members
| Surname | Clark |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Hammond City |
| 1935 Residence (County) | Lake |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Betty Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Betty Clark
Daughter · 1940 · age 14 · b. ~1926 · Indiana
★ You are viewing this record
Sibling
Donald Clark
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Clark
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Clark
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Clark
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Clark
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Homer Clark
Sibling · 1940 · age 28
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 — Lake-County, Indiana
Open full size
1940 US Federal Census — Lake-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01066-00658)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph Kollada | 22 | Son | Architect | Indiana |
| 42 | William Kollada | 21 | Son | Machinist | Indiana |
| 43 | Edward Kollada | 19 | Son | Laborer | Indiana |
| 44 | Joseph F. A. Deakins | 27 | Head | Sales Clerk | Illinois |
| 45 | Emma L. Deakins | 26 | Wife | — | Illinois |
| 46 | Joseph Deakins | 0 | Son | — | Illinois |
| 47 | Emma Barragree | 52 | Mother in law | Sales Clerk | Illinois |
| 48 | Anthony Frey | 38 | Head | Helper | Ohio |
| 49 | Helen Frey | 38 | Wife | — | West Virginia |
| 50 | Virgil Frey | 20 | Son | Sales Clerk | Ohio |
| 51 | Anthony Frey | 16 | Son | — | Ohio |
| 52 | Virginia Frey | 13 | Daughter | — | Ohio |
| 53 | Mary Louise Frey | 11 | Daughter | — | Ohio |
| 54 | Tony Novak | 77 | Head | — | Germany |
| 55 | James Croak | 29 | Head | Coke Still Cleaner | Illinois |
| 56 | Mary Croak | 29 | Wife | — | Illinois |
| 57 | Mary Croak | 9 | Daughter | — | Illinois |
| 58 | James Croak | 7 | Son | — | Indiana |
| 59 | Gerald Croak | 4 | Son | — | Indiana |
| 60 | Valentine Jr. Gallas | 35 | Head | Machinist | New York |
| 61 | Florence A. Gallas | 31 | Wife | — | Texas |
| 62 | Ray L. Gallas | 11 | Son | — | Texas |
| 63 | Phyllis L. Gallas | 6 | Daughter | — | Indiana |
| 64 | Richard F. Gallas | 1 | Son | — | Indiana |
| 65 | Leonard Gargas | 51 | Head | Carpenter | Poland |
| 66 | Josephine Gargas | 46 | Wife | — | Poland |
| 67 | Steve Gargas | 28 | Son | Machinist | Illinois |
| 68 | Chester Gargas | 25 | Son | — | Michigan |
| 69 | Bruno Gargas | 18 | Son | — | Indiana |
| 70 | Homer E. Clark | 54 | Head | First Helper Melting Furnace | Illinois |
| 71 | Amy B. Clark | 53 | Wife | — | Illinois |
| 72 | Homer Clark | 28 | Son | Heat Treater | Illinois |
| 73 | Richard Clark | 28 | Son | Carpenter | Illinois |
| 74 | Donald Clark | 24 | Son | Carpenter | Illinois |
| 75 | Bernice Clark | 22 | Daughter | — | Illinois |
| 76 | Robert Clark | 20 | Son | Carpenter | Illinois |
| 77 | Charles Clark | 17 | Son | — | Illinois |
| 78 | Betty Clark THIS PERSON | 14 | Daughter | — | Illinois |
| 79 | Leonard Maching | 32 | Head | Operator Blast Furnace | Wisconsin |
| 80 | Harriet Maching | 33 | Wife | — | 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)