MC
Mary Cahill — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Cahill across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 7-person household.
Age 16
b. ~1924
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Cahill |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Hoboken city |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Hoboken City |
| Est. Birth Year | ~1924 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Joseph Cahill | Son | — | 13 | ~1927 |
| Bridget Cahill | Spouse | — | 43 | ~1897 |
| Mary Cahill | Daughter | — | 16 | ~1924 |
| Agnes Cahill | Daughter | — | 15 | ~1925 |
| Joan Cahill | Daughter | — | 9 | ~1931 |
| Thomas Cahill | Son | — | 11 | ~1929 |
| Joseph Cahill | Head | — | 43 | ~1897 |
Census Appearances
1930
Hudson, New …
Daughter, age 6
Hudson, New Jersey · implied b. ~1924 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cahill |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | Irish Free State |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Hudson-County, New …
Daughter, age 16
Hudson-County, New Jersey · implied b. ~1924 — 7 household members
| Surname | Cahill |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Hoboken city |
| 1935 Residence (County) | Hudson |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Cahill across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cahill
Daughter · 1940 · age 16 · b. ~1924 · New Jersey
★ You are viewing this record
Sibling
Joseph Cahill
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Cahill
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Cahill
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Cahill
Sibling · 1940 · age 11
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
39 people indexed on this census page (nara:1940:m-t0627-02348-00508)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Kane | 51 | Head | Laborer | Russia |
| 2 | Harold Kane | 25 | Son | Laborer | New York |
| 3 | Solomon Kane | 23 | Son | Laborer | New York |
| 4 | Pearl Kane | 21 | Daughter | Typing | New York |
| 5 | Mollie Kane | 17 | Daughter | — | New York |
| 6 | Alfred Basin | 46 | Head | Letter Carrier | New York |
| 7 | Florence Basin | 39 | Wife | — | New Jersey |
| 8 | Warren Basin | 19 | Son | Manager | New Jersey |
| 9 | Rose Basin | 13 | Daughter | — | New Jersey |
| 10 | Philip Basin | 7 | Son | — | New Jersey |
| 11 | Anita Basin | 3 | Daughter | — | New Jersey |
| 12 | Joseph Cahill | 43 | Head | Chauffeur | New York |
| 13 | Bridget Cahill | 43 | Wife | — | Ireland |
| 14 | Mary Cahill THIS PERSON | 16 | Daughter | — | New York |
| 15 | Agnes Cahill | 15 | Daughter | — | New York |
| 16 | Joseph Cahill | 13 | Son | — | New York |
| 17 | Thomas Cahill | 11 | Son | — | New York |
| 18 | Joan Cahill | 9 | Daughter | — | New Jersey |
| 19 | Mary Inderstein | 65 | Head | — | New Jersey |
| 20 | Fred Inderstein | 40 | Son | Laborer | New York |
| 21 | Emil Pistone | 45 | Head | Waiter | New York |
| 22 | Hattie Pistone | 42 | Wife | — | New York |
| 23 | Bertha Taggart | 46 | Head | — | Denmark |
| 24 | Francis Tessy | 47 | Head | Longshoreman | New York |
| 25 | Mary Tessy | 44 | Wife | — | New York |
| 26 | Joseph Tessy | 20 | Son | Laborer | New York |
| 27 | Rita Tessy | 17 | Daughter | — | New York |
| 28 | Catherine Tessy | 15 | Daughter | — | New York |
| 29 | Mary Cralick | 42 | Head | Housekeeper | New Jersey |
| 30 | Matilda Cralick | 19 | Daughter | — | New Jersey |
| 31 | Mary Cralick | 17 | Daughter | — | New Jersey |
| 32 | Joan Cralick | 14 | Daughter | — | New Jersey |
| 33 | Peter Glaser | 65 | Uncle | — | Austria |
| 34 | Alexander Nuttyen | 47 | Head | Longshoreman | New Jersey |
| 35 | Hannah Nuttyen | 45 | Wife | Longshoreman | New Jersey |
| 36 | Edward Nuttyen | 17 | Son | — | New Jersey |
| 37 | John Atill | 28 | Head | Electrician | New Jersey |
| 38 | Irene Atill | 28 | Wife | — | New Jersey |
| 39 | John Jr. Atill | 1 | 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)