MJ
Mary Jacobs — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Marion, Indiana
Our Model Tree links this Mary Jacobs across the 1920, 1930 and 1940 US Censuses in Marion, Indiana (XGBoost, ~Confirmed) — first a spouse (b.~1885), then head of a 4-person household.
Age 45
b. ~1885
Female
Spouse
Born: Indiana
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Marion, Indiana |
| Surname | Jacobs |
| Given Name | Mary R. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 18 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1885 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Pauline Jacobs | Daughter | — | 13 | ~1917 |
| Charles Jacobs | Head | — | 46 | ~1884 |
| Frederick Jacobs | Son | — | 15 | ~1915 |
| Mary Jacobs | Spouse | — | 45 | ~1885 |
Census Appearances
1920
Marion, Indiana
Spouse, age 34
Marion, Indiana · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | Mary R |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Spouse, age 45
Marion, Indiana · implied b. ~1885 — 4 household members
| Surname | Jacobs |
| Given Name | Mary R. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 18 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Other, age 55
Marion-County, Indiana · implied b. ~1885 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | Mabel |
| Relationship to Head | Companion |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| 1935 Residence (City) | Village |
| 1935 Residence (County) | Warren |
| Occupation | Companion |
| Industry | Private family |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 312 |
| Highest Grade | S 8 |
| 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 Jacobs across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Jacobs
Spouse · 1930 · age 45 · b. ~1885 · Indiana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Marion, Indiana
Open full size
1930 US Federal Census — Marion, Indiana
Page Contents
50 people indexed on this census page (ia:1930:indianacensus00reel614:0835)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles K. Sidler | 53 | Head | Truck Driver | Indiana |
| 2 | Nettie Sidler | 43 | Wife | — | Indiana |
| 3 | George Sidler | 23 | Son | Mechanic | Indiana |
| 4 | Mabel Sidler | 21 | Daughter | — | Indiana |
| 5 | Edna Sidler | 18 | Daughter | — | Indiana |
| 6 | Henry Schmidt | 43 | Lodger | Machinist | Indiana |
| 7 | Fred Kistner | 48 | Head | Machinist | Indiana |
| 8 | Catherine Kistner | 32 | Wife | — | Indiana |
| 9 | Charles P. Jacobs | 46 | Head | Clerk | Indiana |
| 10 | Mary R. Jacobs THIS PERSON | 45 | Wife | — | Indiana |
| 11 | Frederick Jr. Jacobs | 15 | Son | Electrician | Indiana |
| 12 | Pauline Jacobs | 13 | Daughter | Stenographer | Indiana |
| 13 | Carl G. Sander | 51 | Head | Salesman | Indiana |
| 14 | Anna G. Sander | 51 | Wife | — | Germany |
| 15 | Anna G. Sander | 19 | Daughter | — | Indiana |
| 16 | William F. Sherer | 73 | Head | Cabinet Maker | Germany |
| 17 | Louisa M. Sherer | 71 | Wife | — | Germany |
| 18 | Carl F. Summers | 44 | Head | Bookkeeper | Indiana |
| 19 | Eileen Summers | 35 | Wife | — | Illinois |
| 20 | Anna G. Summers | 16 | Daughter | — | Indiana |
| 21 | Charles J. Lutz | 47 | Head | Stock Clerk | Indiana |
| 22 | Ellen M. Lutz | 48 | Wife | — | Indiana |
| 23 | Marie E. Lutz | 19 | Daughter | — | Indiana |
| 24 | Lucile M. Lutz | 9 | Daughter | — | Ohio |
| 25 | Ezra F. Noelker | 30 | Head | Salesman | Indiana |
| 26 | Lois Noelker | 29 | Wife | — | Indiana |
| 27 | Lois La Vern Noelker | 4 | Daughter | — | Indiana |
| 28 | Charles F. Menger | 51 | Head | Mechanic | Indiana |
| 29 | Rosa Menger | 46 | Wife | — | Indiana |
| 30 | Charles J. Menger | 20 | Son | — | Indiana |
| 31 | Walter Menger | 14 | Son | — | Indiana |
| 32 | Frank Menger | 12 | Son | — | Indiana |
| 33 | Velma Cavanaugh | 30 | Lodger | Operator | Indiana |
| 34 | Catherine Cavanaugh | 5 | Lodger | — | Indiana |
| 35 | August Baecher | 60 | Head | Baker | Germany |
| 36 | Mary Baecher | 59 | Wife | — | Indiana |
| 37 | Richard Baecher | 29 | Son | — | Indiana |
| 38 | Walter Baecher | 25 | Son | — | Indiana |
| 39 | Dennis Gilkey | 27 | Head | Spotter | Kentucky |
| 40 | Mary Gilkey | 27 | Wife | — | Kentucky |
| 41 | Mary Louise Gilkey | 5 | Daughter | — | Indiana |
| 42 | Anna Bell Gilkey | 0 | Daughter | — | Indiana |
| 43 | Andrew Walkerson | 34 | Brother-in-law | Printer | Kentucky |
| 44 | John A. Steinmetz | 58 | Head | Pattern Maker | Indiana |
| 45 | Amelia Steinmetz | 54 | Sister | Stenographer | Indiana |
| 46 | Truman Buller | 26 | Head | Floor Manager | Indiana |
| 47 | Helen Buller | 23 | Wife | — | Indiana |
| 48 | Barbara Jane Buller | 1 | Daughter | — | Indiana |
| 49 | Robert R. Kingston | 26 | Head | Repairman | Indiana |
| 50 | Mary J. Kingston | 24 | Wife | — | Indiana |
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)