MD
Mary Donovan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Donovan across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 13-person household.
Age 16
b. ~1924
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Donovan |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Union |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | H 3 |
| 1935 Residence | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Bayonne |
| 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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Barbara Donovan | Daughter | — | 11 | ~1929 |
| Mary Donovan | Daughter | — | 16 | ~1924 |
| Dorothy Donovan | Daughter | — | 3 | ~1937 |
| Joan Donovan | Daughter | — | 8 | ~1932 |
| Catherine Donovan | Daughter | — | 10 | ~1930 |
| Helen Donovan | Daughter | — | 6 | ~1934 |
| Daniel Donovan | Head | — | 41 | ~1899 |
| Francis Donovan | Son | — | 12 | ~1928 |
| William Donovan | Son | — | 14 | ~1926 |
| William Donovan | Son | — | 4 | ~1936 |
| John Donovan | Son | — | 13 | ~1927 |
| Daniel Donovan | Son | — | ~1940 | |
| Julia Donovan | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Hudson, New …
Daughter, age 5
Hudson, New Jersey · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donovan |
| Given Name | Mae |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 16
Hudson-County, New Jersey · implied b. ~1924 — 13 household members
| Surname | Donovan |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Union |
| 1935 Residence (County) | Hudson |
| Hours Worked | 0 |
| Highest Grade | H 3 |
| 1935 Residence | New Jersey |
| 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 Donovan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donovan
Daughter · 1940 · age 16 · b. ~1924 · New Jersey
★ You are viewing this record
Sibling
William Donovan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Donovan
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Donovan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Donovan
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Donovan
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Donovan
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Donovan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Donovan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Donovan
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Donovan
Sibling · 1940 · age 10
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-t0627-02346-00399)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Seltis | 13 | daughter | — | New Jersey |
| 2 | Olga Seltis | 9 | daughter | — | New Jersey |
| 3 | Irene Seltis | 7 | daughter | — | New Jersey |
| 4 | Daniel Donovan | 41 | head | Operator | New Jersey |
| 5 | Julia Donovan | 39 | wife | — | New York |
| 6 | Mary Donovan THIS PERSON | 16 | daughter | — | New Jersey |
| 7 | William Donovan | 14 | son | — | New Jersey |
| 8 | John Donovan | 13 | son | — | New Jersey |
| 9 | Francis Donovan | 12 | son | — | New Jersey |
| 10 | Barbara Donovan | 11 | daughter | — | New Jersey |
| 11 | Catherine Donovan | 10 | daughter | — | New Jersey |
| 12 | Joan Donovan | 8 | daughter | — | New Jersey |
| 13 | Helen Donovan | 6 | daughter | — | New Jersey |
| 14 | William Donovan | 4 | son | — | New Jersey |
| 15 | Dorothy Donovan | 3 | daughter | — | New Jersey |
| 16 | Daniel Jr. Donovan | 0 | son | — | New Jersey |
| 17 | Raymond Sexton | 32 | head | Inspector | New York |
| 18 | Margaret Sexton | 30 | wife | — | New Jersey |
| 19 | Raymond Jr. Sexton | 3 | son | — | New Jersey |
| 20 | Patricia Sexton | 1 | daughter | — | New Jersey |
| 21 | George Nelson | 40 | head | Carpenter | New Jersey |
| 22 | Elizabeth Nelson | 75 | mother | — | New Zealand |
| 23 | William Steiner | 50 | head | Investigator | New Jersey |
| 24 | Marie Steiner | 46 | wife | — | New Jersey |
| 25 | Marion Steiner | 15 | daughter | — | New Jersey |
| 26 | William Jr. Steiner | 13 | son | — | New Jersey |
| 27 | John Balmer | 42 | head | Bridge Tender | New Jersey |
| 28 | Mary Balmer | 41 | wife | — | Penn. |
| 29 | Joan Balmer | 8 | daughter | — | New Jersey |
| 30 | George Devany | 55 | head | Navy Yard | New York |
| 31 | Angela Devany | 49 | wife | — | New York |
| 32 | Max Leibowitz | 53 | head | Tailor | Russia |
| 33 | Annie Leibowitz | 53 | wife | — | Russia |
| 34 | David Leibowitz | 31 | son | Pharmacist | New York |
| 35 | Ronald Leibowitz | 24 | son | Salesman | New York |
| 36 | Benjamin Leibowitz | 18 | son | Clerk | New Jersey |
| 37 | Harvey Leibowitz | 16 | son | — | New Jersey |
| 38 | Alter Knigel | 32 | head | Rabbi | New Jersey |
| 39 | Ida Knigel | 30 | wife | Teacher | New Jersey |
| 40 | Lizzie Sallyman | 80 | mother-in-law | — | Russia |
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)