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Mary Brock — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Oklahoma, Oklahoma
Our Model Tree links this Mary Brock across the 1930 and 1940 US Censuses in Oklahoma, Oklahoma (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 6-person household.
Age 6
b. ~1924
Female
Daughter
Born: Oklahoma
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Oklahoma, Oklahoma |
| Surname | Brock |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Occupation | none |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Township / Ward | Oklahoma City |
| Est. Birth Year | ~1924 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bert Brock | Head | — | 40 | ~1890 |
| Phyllis Brock | Daughter | — | 16 | ~1914 |
| Bert Brock | Son | — | 10 | ~1920 |
| Gwendolyn Brock | Spouse | — | 39 | ~1891 |
| Mary Brock | Daughter | — | 6 | ~1924 |
| Betty Brock | Daughter | — | 12 | ~1918 |
Census Appearances
1930
Oklahoma, Oklahoma
Daughter, age 6
Oklahoma, Oklahoma · implied b. ~1924 — 6 household members
| Surname | Brock |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Oklahoma-County, Oklahoma
Daughter, age 16
Oklahoma-County, Oklahoma · implied b. ~1924 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Oklahoma City |
| 1935 Residence (County) | Oklahoma |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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
Daughter · 1930 · age 6 · b. ~1924 · Oklahoma
★ You are viewing this record
Sibling
Betty Brock
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bert Brock
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phyllis Brock
Sibling · 1930 · age 16
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
1930 US Federal Census — Oklahoma, Oklahoma
Open full size
1930 US Federal Census — Oklahoma, Oklahoma
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1918unit:0640)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Rutherford Moned | 2 | Son | None | Tennessee |
| 52 | Granvil S. Kirk | 34 | Head | Accountant | Alabama |
| 53 | Mae Kirk | 31 | Wife | None | Kentucky |
| 54 | Charles R. Kirk | 5 | Son | None | Oklahoma |
| 55 | Billy H. Kirk | 2 | Son | None | Oklahoma |
| 56 | Leo C. Horock | 23 | Roomer | Machinist | Missouri |
| 57 | Henry J. Pederson | 23 | Roomer | Employee | Nebraska |
| 58 | Alonzo Benefield | 17 | Roomer | Bank Clerk | Oklahoma |
| 59 | Robert E. Leonard | 40 | Head | State Mgr | Texas |
| 60 | Eolag Leonard | 40 | Wife | None | Texas |
| 61 | Virginia Leonard | 15 | Daughter | None | Oklahoma |
| 62 | Robert Leonard | 11 | Son | None | Oklahoma |
| 63 | Harry Leonard | 7 | Son | None | Oklahoma |
| 64 | Jake Keller | 37 | Head | Painter | Switzerland |
| 65 | Mary Keller | 49 | Wife | None | Germany |
| 66 | Edward Keller | 12 | Son | None | Oklahoma |
| 67 | Albert Keller | 25 | Son | Meterman|Meter Man | Tennessee |
| 68 | O. Rev Cox | 32 | Head | Credit Manager | Alabama |
| 69 | Agnes Cox | 28 | Wife | Cashier | Oklahoma |
| 70 | Bonita Bond | 30 | Roomer | None | Indiana |
| 71 | Carl Grover | 34 | Head | Tr. Salesman | Indiana |
| 72 | Janice Grover | 26 | Wife | Stenographer | Oklahoma |
| 73 | John E. Haley | 32 | Head | Supt. | Illinois |
| 74 | Olive Haley | 28 | Wife | None | Ohio |
| 75 | Mary Alice Haley | 2 | Daughter | None | Illinois |
| 76 | Roy Hughes | 37 | Head | Tr. Salesman | Missouri |
| 77 | Frances Hughes | 34 | Wife | None | Missouri |
| 78 | Myrtle Chattin | 32 | Sister-in-law | None | Missouri |
| 79 | Leo Oppenheim | 36 | Head | Investment Banking | Indiana |
| 80 | Elizabeth Oppenheim | 33 | Wife | None | Hungary |
| 81 | Edgar Oppenheim | 11 | Son | None | Ohio |
| 82 | Betty Oppenheim | 8 | Daughter | None | Ohio |
| 83 | Edward Weiss | 23 | Brother-in-law | Office Mgr | Ohio |
| 84 | Bert Brock | 40 | Head | Contractor | Kansas |
| 85 | Gwendolyn Brock | 39 | Wife | None | Missouri |
| 86 | Phyllis Brock | 16 | Daughter | None | Oklahoma |
| 87 | Betty Brock | 12 | Daughter | None | Texas |
| 88 | Bert Jr. Brock | 10 | Son | None | Oklahoma |
| 89 | Mary Jane Brock THIS PERSON | 6 | Daughter | None | Oklahoma |
| 90 | John Mathews | 57 | Head | Architect | Georgia |
| 91 | Martha Mathews | 38 | Wife | None | Kentucky |
| 92 | Ilorian Mathews | 17 | Daughter | None | Texas |
| 93 | John Mathews | 15 | Son | None | Texas |
| 94 | Margaret Mathews | 11 | Daughter | None | Texas |
| 95 | O. James Lowell | 27 | Head | Minister | Kentucky |
| 96 | Tressa Lowell | 26 | Wife | None | Missouri |
| 97 | Arthur Clough | 30 | Head | Auditor | Indiana |
| 98 | Sarah Clough | 26 | Wife | None | Texas |
| 99 | Carol Clough | 1 | Daughter | None | Oklahoma |
| 100 | C. Wesley Guttermann | 47 | Head | Principal High School | Iowa |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)