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Mary Mckenna — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this Mary Mckenna across the 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 9-person household.
Age 22
b. ~1918
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | McKenna |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Montclair Town |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | C-3 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Montclair Town |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Betty Mckenna | Daughter | — | 20 | ~1920 |
| Jeanne Mckenna | Daughter | — | 18 | ~1922 |
| Catherine Mckenna | Daughter | — | 15 | ~1925 |
| Margaret Mckenna | Daughter | — | 29 | ~1911 |
| Mary Mckenna | Daughter | — | 22 | ~1918 |
| John Mckenna | Head | — | 49 | ~1891 |
| Paul Mckenna | Son | — | 26 | ~1914 |
| John Mckenna | Son | — | 24 | ~1916 |
| Catherine Mckenna | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Essex, New …
Daughter, age 11
Essex, New Jersey · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKeon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Daughter, age 22
Essex-County, New Jersey · implied b. ~1918 — 9 household members
| Surname | McKenna |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Montclair Town |
| 1935 Residence (County) | Essex |
| Highest Grade | C-3 |
| 1935 Residence | Same House |
| 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 Mckenna across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mckenna
Daughter · 1940 · age 22 · b. ~1918 · New Jersey
★ You are viewing this record
Sibling
Betty Mckenna
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mckenna
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mckenna
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mckenna
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jeanne Mckenna
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mckenna
Sibling · 1940 · age 29
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-t0627-02337-00153)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Adrien J. Von Schmid | 41 | Head | Sales Engineer | New York |
| 2 | Ethel H. Von Schmid | 43 | Wife | — | New York |
| 3 | Patricia Von Schmid | 15 | Daughter | — | New Jersey |
| 4 | John G. Von Schmid | 11 | Son | — | New Jersey |
| 5 | Henry H. Barfield | 33 | Head | Accountant | England |
| 6 | Augusta B. Barfield | 29 | Wife | — | California |
| 7 | Cornelius W. Egan | 32 | Head | Clerical | New Jersey |
| 8 | Loretta F. Egan | 29 | Wife | — | New York |
| 9 | Cornelius P. Egan | 1 | Son | — | New Jersey |
| 10 | William J. Egan | 0 | Son | — | New Jersey |
| 11 | Lester B. Donahue | 53 | Head | Attorney | Maine |
| 12 | Mary C. Donahue | 52 | Wife | — | New York |
| 13 | Barbara Craig | 4 | Daughter | — | New Jersey |
| 14 | Veronica Mullen | 72 | Mother Law | — | Germany |
| 15 | Harry P. Gage | 52 | Head | Executive | Michigan |
| 16 | Mary A. Gage | 54 | Wife | — | Michigan |
| 17 | Joseph Harder | 47 | Head | Importer And Exporter | New Jersey |
| 18 | Loretta M. Harder | 44 | Wife | — | New Jersey |
| 19 | Joseph Jr. Harder | 15 | Son | — | New Jersey |
| 20 | Jean Harder | 13 | Daughter | — | New Jersey |
| 21 | Richard W. Harder | 10 | Son | — | New Jersey |
| 22 | Harrieth Gibson | 23 | Servant | Servant | New York |
| 23 | Sarah Wogan | 56 | Head | — | Indiana |
| 24 | Robert G. Wogan | 33 | Son | Executive | Indiana |
| 25 | Gideon I. Davenport | 50 | Head | Executive | N. Carolina |
| 26 | Mabel Davenport | 52 | Wife | — | New Jersey |
| 27 | Allan Davenport | 17 | Son | — | New Jersey |
| 28 | Mary F. Colwell | 67 | Ward | Maid | New York |
| 29 | John A. Mckenna | 49 | Head | Executive | New York |
| 30 | Catherine Mckenna | 45 | Wife | — | New York |
| 31 | Margaret Mckenna | 29 | Daughter | — | New York |
| 32 | Mary Mckenna THIS PERSON | 22 | Daughter | — | New Jersey |
| 33 | Betty Mckenna | 20 | Daughter | — | New Jersey |
| 34 | Jeanne Mckenna | 18 | Daughter | — | New Jersey |
| 35 | Catherine Jr. Mckenna | 15 | Daughter | — | New Jersey |
| 36 | Paul Mckenna | 26 | Son | — | New York |
| 37 | John Mckenna | 24 | Son | Clerical | New York |
| 38 | Harvey W. Ewing | 53 | Head | Physician | Pennsylvania |
| 39 | Margaret J. Ewing | 51 | Wife | — | Pennsylvania |
| 40 | Donald J. Ewing | 22 | Son | — | 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)