MC
Mary Corcoran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this Mary Corcoran across the 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 6-person household.
Age 18
b. ~1922
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Corcoran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Orange |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Industry | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Orange |
| Est. Birth Year | ~1922 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Corcoran | Spouse | — | 45 | ~1895 |
| Theodore Corcoran | Son | — | 21 | ~1919 |
| Martin Corcoran | Head | — | 45 | ~1895 |
| Raymond Corcoran | Son | — | 5 | ~1935 |
| Mary Corcoran | Daughter | — | 18 | ~1922 |
| Thomas Corcoran | Son | — | 20 | ~1920 |
Census Appearances
1930
Essex, New …
Daughter, age 8
Essex, New Jersey · implied b. ~1922 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Corcoran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Daughter, age 18
Essex-County, New Jersey · implied b. ~1922 — 6 household members
| Surname | Corcoran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Orange |
| 1935 Residence (County) | Essex |
| Industry | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Corcoran across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Corcoran
Daughter · 1940 · age 18 · b. ~1922 · New Jersey
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Sibling
Thomas Corcoran
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theodore Corcoran
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Corcoran
Sibling · 1940 · age 5
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
1940 US Federal Census — Essex-County, New Jersey
Open full size
1940 US Federal Census — Essex-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02339-00929)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sam Stanziale | 48 | Head | Proprietor | Italy |
| 2 | Santina Stanziale | 46 | Wife | — | Italy |
| 3 | Adolph Stanziale | 18 | Son | Waiter | New Jersey |
| 4 | Richard Carter | 60 | Head | Postal Clerk | England |
| 5 | Agnes Carter | 57 | Wife | — | England |
| 6 | Agnes M. Carter | 29 | Daughter | Teacher | New Jersey |
| 7 | Richard Van Breemen | 46 | Head | Carpenter | New Jersey |
| 8 | Lillian Van Breemen | 42 | Wife | Secretary | New Jersey |
| 9 | John J. Isaire | 51 | Head | Policeman | Eire |
| 10 | Delia Isaire | 45 | Wife | — | Eire |
| 11 | John M. Isaire | 20 | Son | New Worker | New Jersey |
| 12 | Thomas F. Isaire | 18 | Son | — | New Jersey |
| 13 | James Isaire | 14 | Son | — | New Jersey |
| 14 | Therese Isaire | 8 | Daughter | — | New Jersey |
| 15 | George Dietz | 41 | Head | Baker | Germany |
| 16 | Augusta Dietz | 34 | Wife | — | Germany |
| 17 | Hildegard Dietz | 10 | Daughter | — | New Jersey |
| 18 | Karl Dietz | 33 | Brother | Baker | Germany |
| 19 | Martin Corcoran | 45 | Head | Policeman | Eire |
| 20 | Mary Corcoran | 45 | Wife | — | Eire |
| 21 | Theodore Corcoran | 21 | Son | — | New Jersey |
| 22 | Thomas A. Corcoran | 20 | Son | — | New Jersey |
| 23 | Mary Corcoran THIS PERSON | 18 | Daughter | — | New Jersey |
| 24 | Raymond Corcoran | 5 | Son | — | New Jersey |
| 25 | Herbert C. Hundley | 26 | Head | Production | Pennsylvania |
| 26 | Helen J. Hundley | 24 | Wife | — | New Jersey |
| 27 | William A. Schreiner | 31 | Head | Salesman | New Jersey |
| 28 | Beulah R. Schreiner | 28 | Wife | — | New Jersey |
| 29 | William A. Jr. Schreiner | 2 | Son | — | New Jersey |
| 30 | Walter A. Werner | 36 | Head | Chauffeur | New Jersey |
| 31 | Mary Werner | 35 | Wife | — | New Jersey |
| 32 | Marie Werner | 12 | Daughter | — | New Jersey |
| 33 | Walter Jr. Werner | 10 | Son | — | New Jersey |
| 34 | John Brougham | 11 | Nephew | — | New Jersey |
| 35 | Catherine Tynon | 64 | Mother-in-law | — | Pennsylvania |
| 36 | Charles Tynon | 42 | Brother-in-law | Receiving Clerk | New Jersey |
| 37 | Louis R. Van Nest | 48 | Head | Draughtsman | New Jersey |
| 38 | Mary Van Nest | 44 | Wife | — | New Jersey |
| 39 | Audrey Van Nest | 24 | Daughter | Comptometer Operator | New Jersey |
| 40 | William B. Kearney | 53 | Head | Laborer | New Jersey |
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)