MK
Mary Kaufman — 1930 US Census Record
Model Tree available1930 United States Federal Census · Los Angeles, California
Our Model Tree links this Mary Kaufman across the 1920, 1930 and 1940 US Censuses in Los Angeles, California (XGBoost, ~Confirmed), with identified parents William & William — first a daughter (b.~1912), then head of a 5-person household.
Age 18
b. ~1912
Female
Daughter
Born: Nebraska
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Los Angeles, California |
| Surname | Kaufman |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | Nebraska |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1912 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Kaufman | Son | — | 17 | ~1913 |
| Helen Kaufman | Daughter | — | 15 | ~1915 |
| Mary Kaufman | Daughter | — | 18 | ~1912 |
| William Kaufman | Head | — | 54 | ~1876 |
| Margaret Kaufman | Spouse | — | 44 | ~1886 |
Census Appearances
1920
Los Angeles, …
Daughter, age 8
Los Angeles, California · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kauffman |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | Nebraska |
| Speaks English | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1930
Los Angeles, …
Daughter, age 18
Los Angeles, California · implied b. ~1912 — 5 household members
| Surname | Kaufman |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Los-Angeles-County, California
Daughter, age 27
Los-Angeles-County, California · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kauffman |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Occupation | Secretary |
| Industry | Aircraft |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1036 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Kaufman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Kaufman (~0.92 confidence) and father William Kauffman (~0.92 confidence) and father William Kauffman (~0.92 confidence) and mother Margaret Kaufman (~0.92 confidence) and mother Margaret Kauffman (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Kaufman
b. ~1876
Source father
● Household
· direct · ~0.92
Father
William Kauffman
b. ~1882
Source father
● Household
· direct · ~0.92
Father
William Kauffman
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Margaret Kaufman
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Margaret Kauffman
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Kaufman
Daughter · 1930 · age 18 · b. ~1912 · California
★ You are viewing this record
Sibling
William Kaufman
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Kaufman
Sibling · 1930 · age 15
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 — Los Angeles, California
Open full size
1930 US Federal Census — Los Angeles, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel134rs:0744)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Raymond Lester | 42 | Head | Gen Manager | Ohio |
| 52 | Elizabeth S. Lester | 42 | Wife | — | Kansas |
| 53 | Raymond S. Lester | 20 | Son | — | Ohio |
| 54 | Virginia J. Lester | 15 | Daughter | — | Ohio |
| 55 | Mary E. Lester | 6 | Daughter | — | Ohio |
| 56 | Thomas Huston | 66 | Head | — | Scotland |
| 57 | Grace Huston | 62 | Wife | — | Scotland |
| 58 | Ruth Huston | 28 | Daughter | Stenographer | Illinois |
| 59 | Edith Huston | 26 | Daughter | — | Illinois |
| 60 | Maria Byrnes | 73 | Head | — | California |
| 61 | Charles H. Adams | 48 | Son | Electrician | California |
| 62 | Fergus M. Nolan | 45 | Head | Janitor | New York |
| 63 | Lucy M. Nolan | 50 | Wife | — | Wisconsin |
| 64 | Lydia A. Nolan | 19 | Daughter | — | Michigan |
| 65 | Anne W. Cummings | 56 | Head | Saleswoman | Illinois |
| 66 | Alice Cummings | 27 | Daughter | — | Connecticut |
| 67 | David Gray | 25 | Head | Driver | Illinois |
| 68 | Lois Gray | 23 | Wife | — | France |
| 69 | Monia Gray | 2 | Daughter | — | California |
| 70 | Walter Eckert | 43 | Head | Salesman | Germany |
| 71 | Nell Eckert | 46 | Wife | — | New York |
| 72 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
| 73 | B. Ernest Pires | 57 | Head | Banker | Illinois |
| 74 | Edith Pires | 56 | Wife | — | Illinois |
| 75 | Ernest Pires | 21 | Son | Servant | Illinois |
| 76 | Garrard Sherman | 56 | Head | Broker | Poland |
| 77 | Fannie Sherman | 47 | Wife | — | Poland |
| 78 | Edward C. Cornells | 51 | Head | — | Canada English |
| 79 | Ann E. Cornells | 50 | Sister | — | Indiana |
| 80 | Stanley Chambers | 26 | Lodger | Salesman | Massachusetts |
| 81 | Robert A. Russell | 51 | Head | Salesman | New York |
| 82 | Maude G. Russell | 47 | Wife | — | New York |
| 83 | George J. Mossen | 57 | Head | Clerk | Pennsylvania |
| 84 | Kate Mossen | 56 | Wife | — | Pennsylvania |
| 85 | Kenneth Mossen | 25 | Son | Salesman | Pennsylvania |
| 86 | William Kaufman | 54 | Head | Broker | Nebraska |
| 87 | Margaret Kaufman | 44 | Wife | — | Nebraska |
| 88 | Mary E. Kaufman THIS PERSON | 18 | Daughter | — | Nebraska |
| 89 | William Kaufman | 17 | Son | — | Nebraska |
| 90 | Helen M. Kaufman | 15 | Daughter | — | Nebraska |
| 91 | Hulda Eckenbrecht | 72 | Head | — | Germany |
| 92 | Daughter Eckenbrecht | 47 | — | — | Illinois |
| 93 | James Sedgwick | 51 | Head | Writer | Louisiana |
| 94 | Gertrude Sedgwick | 37 | Wife | — | France |
| 95 | John Sedgwick | 3 | Son | — | Louisiana |
| 96 | Edwin J. Watson | 50 | Head | — | Ohio |
| 97 | Florence E. Watson | 33 | Wife | Broker | New York |
| 98 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
| 99 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
| 100 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)