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Mary Mckay — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Mckay across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 4-person household.
Age 12
b. ~1928
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | McKay |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Kearny town |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Kearny Town |
| Est. Birth Year | ~1928 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Leah Mckay | Spouse | — | 41 | ~1899 |
| Hugh Mckay | Head | — | 40 | ~1900 |
| Doris Mckay | Daughter | — | 7 | ~1933 |
| Mary Mckay | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Hudson, New …
Daughter, age 1
Hudson, New Jersey · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCoy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 12
Hudson-County, New Jersey · implied b. ~1928 — 4 household members
| Surname | McKay |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Kearny town |
| 1935 Residence (County) | Hudson |
| Highest Grade | 7 |
| 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 Mckay across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mckay
Daughter · 1940 · age 12 · b. ~1928 · New Jersey
★ You are viewing this record
Sibling
Doris Mckay
Sibling · 1940 · age 7
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 — Hudson-County, New Jersey
Open full size
1940 US Federal Census — Hudson-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02350-00255)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bernard Holofast | 38 | Head | Manager | New York |
| 2 | Helen Holofast | 38 | Wife | Housewife | Pennsylvania |
| 3 | Joseph Mcguire | 42 | Head | Machinist Mech | New Jersey |
| 4 | Rose Mcguire | 33 | Wife | Housewife | New Jersey |
| 5 | Joseph Mcguire | 13 | Son | — | New Jersey |
| 6 | Erma Agler | 20 | Sister-in-law | Housekeeper | New Jersey |
| 7 | Leslie Kenworthy | 41 | Head | Chauffeur | New Jersey |
| 8 | Anne Kenworthy | 36 | Wife | Housewife | New Jersey |
| 9 | Leslie Jr Kenworthy | 19 | Son | File Clerk | New Jersey |
| 10 | Alfred Kenworthy | 16 | Son | — | New Jersey |
| 11 | Frederick Kenworthy | 14 | Son | — | New Jersey |
| 12 | Elmer(On) Kenworthy | 11 | Son | — | New Jersey |
| 13 | Nancy Kenworthy | 5 | Daughter | — | New Jersey |
| 14 | Charles Gillen | 48 | Head | Carpenter | Scotland |
| 15 | Jane Gillen | 42 | Wife | Housewife | Scotland |
| 16 | Eileen Gillen | 16 | Daughter | — | New Jersey |
| 17 | Frank Tragi | 57 | Head | Janitor | Italy |
| 18 | Josephine Tragi | 47 | Wife | Housewife | Italy |
| 19 | Alexander Wright | 49 | Head | Confectioner | Ireland |
| 20 | Margaret Wright | 42 | Wife | Housewife | Scotland |
| 21 | Robert Knox | 44 | Brother-in-law | Operator | Scotland |
| 22 | Hugh Mckay | 40 | Head | Machinist | Scotland |
| 23 | Leah Mckay | 41 | Wife | Housewife | Scotland |
| 24 | Mary Mckay THIS PERSON | 12 | Daughter | — | New Jersey |
| 25 | Doris Mckay | 7 | Daughter | — | New Jersey |
| 26 | Arthur Hogge | 58 | Head | Machinist | England |
| 27 | Anna Hogge | 57 | Wife | Housewife | Scotland |
| 28 | Arthur Jr Hogge | 25 | Son | Rev Worker | New Jersey |
| 29 | James Hogg | 42 | Head | Machinist | Scotland |
| 30 | Mary Hogg | 40 | Wife | Housewife | Scotland |
| 31 | John Hogg | 16 | Son | — | Scotland |
| 32 | Norma Hogg | 10 | Daughter | — | New Jersey |
| 33 | William Glover | 51 | Boarder | Marine Engr | Scotland |
| 34 | Jennie Belford | 71 | Head | Housekeeper | Scotland |
| 35 | David Evans | 26 | Grandson | Laborer | New Jersey |
| 36 | Victor Polssy | 53 | Head | Pump Tester | St. Helena |
| 37 | Bertha Polssy | 47 | Wife | Housewife | Massachusetts |
| 38 | Paul Polssy | 11 | Son | — | Massachusetts |
| 39 | Jeanette Polssy | 10 | Daughter | — | Massachusetts |
| 40 | Andrew Pue | 39 | Head | Electrician | Scotland |
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)