MJ
Mary Jacobs — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lucas-County, Ohio
Our Model Tree links this Mary Jacobs across the 1920, 1930 and 1940 US Censuses in Lucas-County, Ohio (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 5-person household.
Age 61
b. ~1879
Female
Spouse
Born: Hungary
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lucas-County, Ohio |
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Hungary |
| 1935 Residence (City) | Toledo City |
| 1935 Residence (County) | LUCAS |
| Naturalization Status | Naturalized |
| Additional Details | |
| Industry | Yes |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
| Township / Ward | Toledo City |
| Est. Birth Year | ~1879 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Katie Jacobs | Daughter | — | 28 | ~1912 |
| Betty Jacobs | Daughter | — | 22 | ~1918 |
| Anna Jacobs | Daughter | — | 24 | ~1916 |
| Joseph Jacobs | Head | — | 64 | ~1876 |
| Mary Jacobs | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Lucas, Ohio
Spouse, age 42
Lucas, Ohio · implied b. ~1878 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jakab |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Hungary |
| Year of Immigration | 1896 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Magyar |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
1930
Lucas, Ohio
Other, age 51
Lucas, Ohio · implied b. ~1879 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacob |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Hungary |
| Naturalization Status | Naturalized |
| Year of Immigration | 1895 |
| Age at First Marriage | 22 |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | Magyar |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
1940
Lucas-County, Ohio
Spouse, age 61
Lucas-County, Ohio · implied b. ~1879 — 5 household members
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Hungary |
| 1935 Residence (City) | Toledo City |
| 1935 Residence (County) | LUCAS |
| Naturalization Status | Naturalized |
| Industry | Yes |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
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.
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This person
Anchor record
Mary Jacobs
Spouse · 1940 · age 61 · b. ~1879 · Ohio
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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 — Lucas-County, Ohio
Open full size
1940 US Federal Census — Lucas-County, Ohio
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03266-00691)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Andrew Hanudel | 30 | Son | Clerk | Czechoslovakia |
| 2 | Joe Hanudel | 22 | Son | Waiter | Ohio |
| 3 | John Hanudel | 21 | Son | Waiter | Ohio |
| 4 | Jim Hanudel | 19 | Son | — | Ohio |
| 5 | Mary Hanudel | 17 | Daughter | — | Ohio |
| 6 | Francis Hanudel | 15 | Daughter | — | Ohio |
| 7 | Richard Hanudel | 10 | Son | — | Ohio |
| 8 | Francis B Hanudel | 9 | Son | — | Ohio |
| 9 | Olen V Mcdaniel | 32 | Head | Mechinest | Ohio |
| 10 | Agnes Mcdaniel | 26 | Wife | — | Ohio |
| 11 | Barbara Mcdaniel | 5 | Daughter | — | Ohio |
| 12 | James F Mcdaniel | 0 | Son | — | Ohio |
| 13 | John Markovitz | 60 | Head | Laborer | Poland |
| 14 | Anna Markovitz | 53 | Wife | Laundress | Slovakia |
| 15 | George Stuller | 47 | Head | Rigger | Slovakia |
| 16 | Elizabeth Stuller | 43 | Wife | — | Slovakia |
| 17 | George Stuller | 21 | Son | Rivet Passer | Ohio |
| 18 | Francis Stuller | 17 | Son | — | Ohio |
| 19 | Virginia Stuller | 14 | Daughter | — | Ohio |
| 21 | Emery Sopko | 53 | Head | Laborer | Hungary |
| 22 | Anna Sopko | 49 | Wife | — | Hungary |
| 23 | Andrew Sopko | 30 | Son | Bartender | Penn |
| 24 | James Sopko | 14 | Son | — | Ohio |
| 25 | Anna Sopko | 11 | Daughter | — | Ohio |
| 26 | Frank Sopko | 7 | Son | — | Ohio |
| 27 | Emery Toth | 31 | Head | Glass Worker | Ohio |
| 28 | Pauline Toth | 32 | Wife | — | Czechoslovakia |
| 29 | Mary E Toth | 3 | Daughter | — | Ohio |
| 30 | James V Toth | 2 | Son | — | Ohio |
| 31 | Joseph Sinay | 50 | Head | Molder Maker | Slovakia |
| 32 | Anna Sinay | 45 | Wife | — | Slovakia |
| 33 | Joseph Sinay | 19 | Son | Helper | Ohio |
| 34 | Anna Sinay | 21 | Daughter | — | Ohio |
| 35 | Dorothy Sinay | 13 | Daughter | — | Ohio |
| 36 | Joseph Jacobs | 64 | Head | — | Hungary |
| 37 | Mary Jacobs THIS PERSON | 61 | Wife | — | Hungary |
| 38 | Katie Jacobs | 28 | Daughter | Operator | Ohio |
| 39 | Anna Jacobs | 24 | Daughter | Maid | Ohio |
| 40 | Betty Jacobs | 22 | Daughter | Operator | Ohio |
Related Census Records
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)