MJ
Mary Jacobs — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Jacobs across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1884), then head of a 9-person household.
Age 56
b. ~1884
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia City |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1884 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Jacobs | Daughter | — | 21 | ~1919 |
| Mildred Jacobs | Daughter | — | 15 | ~1925 |
| Arthur Jacobs | Head | — | 58 | ~1882 |
| Kenneth Jacobs | Son | — | 18 | ~1922 |
| Melvin Jacobs | Son | — | 25 | ~1915 |
| Raymond Jacobs | Son | — | 24 | ~1916 |
| Carol Jacobs | Son | — | 13 | ~1927 |
| Earl Jacobs | Son | — | 31 | ~1909 |
| Mary Jacobs | Spouse | — | 56 | ~1884 |
Census Appearances
1930
Philadelphia, Pennsylvania
Other, age 45
Philadelphia, Pennsylvania · implied b. ~1885 — 2 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 | 45 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 38 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Spouse, age 56
Philadelphia-County, Pennsylvania · implied b. ~1884 — 9 household members
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia City |
| 1935 Residence (County) | Philadelphia |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Jacobs
Spouse · 1940 · age 56 · b. ~1884 · Pennsylvania
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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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03737-00820)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry Humpsteter | 55 | Head | Machinist | Germany |
| 2 | Mary Humpsteter | 51 | Wife | — | Germany |
| 3 | David Hamilton | 68 | Head | — | North Ireland |
| 4 | Annie Hamilton | 57 | Wife | — | Penna |
| 5 | Marie Mc Gowan | 21 | Niece | Waitress | Penna |
| 6 | Joseph Mc Gowan | 17 | Nephew | — | New Jersey |
| 7 | John Schelink | 47 | Head | Dispenser | Russia |
| 8 | Catherine Schelink | 42 | Wife | Sorter | Austria |
| 9 | Samuel Neely | 30 | Head | Store Manager | Pennsylvania |
| 10 | Carolyn Neely | 27 | Wife | — | Pennsylvania |
| 11 | Patricia Neely | 7 | Daughter | — | Pennsylvania |
| 12 | Jeanne Neely | 4 | Daughter | — | Pennsylvania |
| 13 | Marie Neely | 3 | Daughter | — | Pennsylvania |
| 14 | Frank Kirchner | 51 | Head | — | Pennsylvania |
| 15 | Elizabeth Kirchner | 50 | Wife | — | Pennsylvania |
| 16 | Harry Heil | 42 | Brother-in-law | Janitor | Pennsylvania |
| 17 | Frank Jr. Kirchner | 23 | Son | Bricklayer | Pennsylvania |
| 18 | Edna Kirchner | 16 | Daughter | — | Pennsylvania |
| 19 | Harry Kirchner | 13 | Son | — | Pennsylvania |
| 20 | Andrew Kinkaid | 33 | Head | Printer | Pennsylvania |
| 21 | Josephine Kinkaid | 32 | Wife | — | Pennsylvania |
| 22 | Gloria Kinkaid | 6 | Daughter | — | Pennsylvania |
| 23 | Elmira James | 64 | Mother-in-law | — | Pennsylvania |
| 24 | Arthur A. Jacobs | 58 | Head | Watchman | Pennsylvania |
| 25 | Mary Jacobs THIS PERSON | 56 | Wife | — | Pennsylvania |
| 26 | Earl Jacobs | 31 | Son | Draftsman | Pennsylvania |
| 27 | Melvin Jacobs | 25 | Son | Labor | Pennsylvania |
| 28 | Raymond Jacobs | 24 | Son | Polisher | Pennsylvania |
| 29 | Eleanor Jacobs | 21 | Daughter | Typist | Pennsylvania |
| 30 | Kenneth Jacobs | 18 | Son | — | Pennsylvania |
| 31 | Mildred Jacobs | 15 | Daughter | — | Pennsylvania |
| 32 | Carol Jacobs | 13 | Son | — | Pennsylvania |
| 33 | Walter Jacobs | 57 | Head | Machinist | Pennsylvania |
| 34 | Sarah Jacobs | 59 | Wife | — | Pennsylvania |
| 35 | Walter Jr. Jacobs | 25 | Son | Machinist | Pennsylvania |
| 36 | Katherine Jacobs | 29 | Daughter-in-law | — | Pennsylvania |
| 37 | George Glenn | 21 | Head | Operator | Pennsylvania |
| 38 | Ethel Glenn | 19 | Wife | — | Virginia |
| 39 | William Watson | 53 | Uncle | — | Virginia |
| 40 | Rose Watson | 63 | Aunt | — | Virginia |
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)