MK
Mary Kaufman — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Essex, Massachusetts
Our Model Tree links this Mary Kaufman across the 1930 and 1940 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1892), then head of a 7-person household.
Age 38
b. ~1892
Female
Spouse
Born: Russia
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, Massachusetts |
| Surname | Kaufman |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Alien |
| Year of Immigration | 1910 |
| Age at First Marriage | 20 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | Yiddish |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1892 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Beatrice Kaufman | Daughter | — | 14 | ~1916 |
| Henry Kaufman | Son | — | 16 | ~1914 |
| Harold Kaufman | Son | — | 9 | ~1921 |
| Charles Kaufman | Son | — | 12 | ~1918 |
| Mary Kaufman | Spouse | — | 38 | ~1892 |
| Mildred Kaufman | Daughter | — | 4 | ~1926 |
| Abraham Kaufman | Head | — | 43 | ~1887 |
Census Appearances
1930
Essex, Massachusetts
Spouse, age 38
Essex, Massachusetts · implied b. ~1892 — 7 household members
| Surname | Kaufman |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Alien |
| Year of Immigration | 1910 |
| Age at First Marriage | 20 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | Yiddish |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
1940
Essex-County, Massachusetts
Spouse, age 48
Essex-County, Massachusetts · implied b. ~1892 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kauffman |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Lynn |
| 1935 Residence (County) | Essex |
| Naturalization Status | Alien |
| Highest Grade | 6 |
| 1935 Residence | Same Place |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kaufman
Spouse · 1930 · age 38 · b. ~1892 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Essex, Massachusetts
Open full size
1930 US Federal Census — Essex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel899:0859)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fletcher S Ross | 71 | Head | Model Maker | Canada |
| 2 | Mary J Ross | 63 | Wife | None | Canada |
| 3 | Charles B Ross | 31 | Daughter | Stenographer | Massachusetts |
| 4 | Nellie Kennedy | 58 | Head | Vamper | Massachusetts |
| 5 | Anna Kennedy | 41 | Sister | Skiver | Massachusetts |
| 6 | Harold Kennedy | 36 | Brother | Last Maker | Massachusetts |
| 7 | Mabel Kennedy | 29 | Sister | Buyer | Massachusetts |
| 8 | Arminta G Kennedy | 28 | Sister | Stenographer | Massachusetts |
| 9 | Edward R Clark | 27 | Nephew | Draftsman | Massachusetts |
| 10 | Alice Clark | 22 | Sister | None | Massachusetts |
| 11 | Barbara M Clark | 2 | Niece | None | Massachusetts |
| 12 | Mary P Clark | 1 | Niece | None | Massachusetts |
| 13 | Jerry J Costello | 58 | Head | Cook | Massachusetts |
| 14 | Mary G Costello | 47 | Wife | None | England |
| 15 | Eleanor B Costello | 20 | Daughter | Stenographer | Massachusetts |
| 16 | Jerry J Jr Costello | 18 | Son | None | Massachusetts |
| 17 | Mary G Costello | 16 | Daughter | None | Massachusetts |
| 18 | Claire M Costello | 15 | Daughter | None | Massachusetts |
| 19 | Genevieve A Costello | 14 | Daughter | None | Massachusetts |
| 20 | Kathryn A Costello | 11 | Daughter | None | Massachusetts |
| 21 | Charles W Costello | 8 | Son | None | Massachusetts |
| 22 | Lloyd Kimball | 47 | Head | Goodyear Op | New York |
| 23 | Florence Kimball | 47 | Wife | None | Massachusetts |
| 24 | — | None | — | — | — |
| 25 | — | None | — | — | — |
| 26 | — | None | — | — | — |
| 27 | — | None | — | — | — |
| 28 | — | None | — | — | — |
| 29 | Hannah Donohue | 65 | Head | None | Ireland |
| 30 | Frank T Donohue | 34 | Son | Clerk | Massachusetts |
| 31 | John B Donohue | 33 | Son | Lawyer | Massachusetts |
| 32 | James D Donohue | 31 | Son | Clerk | Massachusetts |
| 33 | Joseph A Donohue | 26 | Son | Lawyer | Massachusetts |
| 34 | Michael J Donohue | 72 | Head | None | Ireland |
| 35 | Elizabeth Donohue | 66 | Wife | None | Ireland |
| 36 | Abraham Kaufman | 43 | Head | Paper Dealer | Russia |
| 37 | Mary Kaufman THIS PERSON | 38 | Wife | None | Russia |
| 38 | Henry Kaufman | 16 | Son | None | Massachusetts |
| 39 | Beatrice Kaufman | 14 | Daughter | None | Massachusetts |
| 40 | Charles Kaufman | 12 | Son | None | Massachusetts |
| 41 | Harold Kaufman | 9 | Son | None | Massachusetts |
| 42 | Mildred Kaufman | 4 | Daughter | None | Massachusetts |
| 43 | John A King | 39 | Head | Car Repairman | Pennsylvania |
| 44 | Nellie E King | 34 | Wife | None | Massachusetts |
| 45 | John A Jr King | 11 | Son | None | Massachusetts |
| 46 | Mary King | 10 | Daughter | None | Massachusetts |
| 47 | James J King | 7 | Son | None | Massachusetts |
| 48 | Thomas King | 2 | Son | None | Massachusetts |
| 49 | — | None | — | — | — |
| 50 | — | None | — | — | — |
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)