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Mary Brock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boone-County, Indiana
Our Model Tree links this Mary Brock across the 1930 and 1940 US Censuses in Boone-County, Indiana (XGBoost, ~Confirmed) — first a head (b.~1897), then head of a 9-person household.
Age 43
b. ~1897
Female
Head
Born: Indiana
Divorced
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Indiana |
| Surname | Brock |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Divorced |
| Birthplace | Indiana |
| 1935 Residence (City) | Lebanon |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Lebanon |
| Est. Birth Year | ~1897 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| George Brock | Son | — | 23 | ~1917 |
| Ollie Brock | Daughter | — | 11 | ~1929 |
| Martha Brock | Daughter | — | 13 | ~1927 |
| Clifford Brock | Son | — | 19 | ~1921 |
| Charles Brock | Son | — | 15 | ~1925 |
| Bertha Brock | Daughter | — | 8 | ~1932 |
| Mary Brock | Head | — | 43 | ~1897 |
| Mary Brock | Daughter | — | 9 | ~1931 |
| Donna Brock | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Boone, Indiana
Spouse, age 34
Boone, Indiana · implied b. ~1896 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brock |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 23 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Boone-County, Indiana
Head, age 43
Boone-County, Indiana · implied b. ~1897 — 9 household members
| Surname | Brock |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Divorced |
| Birthplace | Indiana |
| 1935 Residence (City) | Lebanon |
| 1935 Residence (County) | Boone |
| Hours Worked | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Mary Brock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Brock
Head · 1940 · age 43 · b. ~1897 · Indiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Boone-County, Indiana
Open full size
1940 US Federal Census — Boone-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01028-00156)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Earnest Doyle | 29 | Brother-in-law | Truck Driver | Indiana |
| 42 | Mary A. Brock THIS PERSON | 43 | Head | — | Indiana |
| 43 | George W. Brock | 23 | Son | Assistant Foreman | Indiana |
| 44 | Clifford J. Brock | 19 | Son | Laborer | Indiana |
| 45 | Charles R. Brock | 15 | Son | — | Indiana |
| 46 | Martha S. Brock | 13 | Daughter | — | Indiana |
| 47 | Ollie S. Brock | 11 | Daughter | — | Indiana |
| 48 | Mary C. Brock | 9 | Daughter | — | Indiana |
| 49 | Bertha S. Brock | 8 | Daughter | — | Indiana |
| 50 | Donna J. Brock | 5 | Daughter | — | Indiana |
| 51 | Mack Washington | 65 | Head | Laborer | Kentucky |
| 52 | Ollie E. Washington | 61 | Wife | — | Kentucky |
| 53 | Eva E. Washington | 22 | Daughter | Seamstress | Kentucky |
| 54 | Abe Artman | 79 | Head | Janitor | Indiana |
| 55 | Marie R. Artman | 38 | Daughter-in-law | — | Indiana |
| 56 | Mary A. Artman | 19 | Granddaughter | House Cleaner | Indiana |
| 57 | Nora Belle Artman | 17 | Granddaughter | — | Indiana |
| 58 | Betty L. Artman | 15 | Granddaughter | — | Michigan |
| 59 | Daniel T. Artman | 14 | Grandson | — | Indiana |
| 60 | Ruby M. Artman | 12 | Granddaughter | — | Indiana |
| 61 | Ogle S. Jameson | 29 | Head | Boiler Fireman | Indiana |
| 62 | Vivian M. Jameson | 23 | Wife | — | Indiana |
| 63 | Teddy Jameson | 5 | Son | — | Indiana |
| 64 | Anna J. Jameson | 0 | Daughter | — | Indiana |
| 65 | Victor E. Borden | 27 | Head | Production Worker | Indiana |
| 66 | Carmen Borden | 21 | Wife | Production Worker | Indiana |
| 67 | Donald E. Borden | 5 | Son | — | Indiana |
| 68 | Larry J. Borden | 0 | Son | — | Indiana |
| 69 | David Wills | 46 | Head | Night Watchman | Indiana |
| 70 | Flossie Wills | 44 | Wife | — | Indiana |
| 71 | John Wills | 20 | Son | Utility Laborer | Indiana |
| 72 | Richard Wills | 19 | Son | Section Hand | Indiana |
| 73 | Fern Wills | 16 | Daughter | — | Indiana |
| 74 | David Jr. Wills | 15 | Son | — | Indiana |
| 75 | Frank Wills | 13 | Son | — | Indiana |
| 76 | Mary Kemp | 22 | Daughter | Waitress | Indiana |
| 77 | John E. Sines | 49 | Lodger | Carpenter | Indiana |
| 78 | Lee Keeley | 31 | Head | Paper Hanger | Indiana |
| 79 | Beulah Keeley | 30 | Wife | — | Indiana |
| 80 | Henry Cook | 49 | Head | Painter | 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)