MF
Mary Fitzpatrick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this Mary Fitzpatrick across the 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Fitzpatrick |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Caldwell |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Verona |
| Est. Birth Year | ~1929 |
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 |
|---|---|---|---|---|
| Grace Fitzpatrick | Daughter | — | 17 | ~1923 |
| Margaret Fitzpatrick | Daughter | — | 4 | ~1936 |
| Jane Fitzpatrick | Daughter | — | 19 | ~1921 |
| Alice Fitzpatrick | Daughter | — | 18 | ~1922 |
| Mary Fitzpatrick | Daughter | — | 11 | ~1929 |
| James Fitzpatrick | Head | — | 42 | ~1898 |
| Joseph Fitzpatrick | Son | — | 14 | ~1926 |
| John Fitzpatrick | Son | — | 7 | ~1933 |
| Myrtle Fitzpatrick | Spouse | — | 39 | ~1901 |
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 | Fitzpatrick |
| Given Name | Margaret |
| 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 |
| Can Read/Write | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Daughter, age 11
Essex-County, New Jersey · implied b. ~1929 — 9 household members
| Surname | Fitzpatrick |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Caldwell |
| 1935 Residence (County) | Essex |
| Highest Grade | No 6 |
| 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 Fitzpatrick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Fitzpatrick
Daughter · 1940 · age 11 · b. ~1929 · New Jersey
★ You are viewing this record
Sibling
Grace Fitzpatrick
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Fitzpatrick
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Fitzpatrick
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Fitzpatrick
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Fitzpatrick
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Fitzpatrick
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 — 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-t0627-02340-00641)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John E Wright | 30 | Son-in-law | Clerk | New Jersey |
| 42 | Catherine Wright | 32 | Daughter | — | New Jersey |
| 43 | Clarence Halverson | 58 | Head | Electrician | Michigan |
| 44 | Irene X Halverson | 53 | Wife | — | New York |
| 45 | Kenneth Halverson | 13 | Son | — | New Jersey |
| 46 | Frederick Stockman | 31 | Head | Owner | New Jersey |
| 47 | Blanche Stockman | 42 | Wife | — | New Jersey |
| 48 | Frederick Jr. Stockman | 8 | Son | — | New Jersey |
| 49 | Lillian Stockman | 2 | Daughter | — | New Jersey |
| 50 | Edward Grover | 84 | Lodger | — | New Jersey |
| 51 | James O'Keefe | 29 | Head | Accountant | New Jersey |
| 52 | Eleanor X O'Keefe | 29 | Wife | — | New Jersey |
| 53 | Margaret O'Keefe | 5 | Daughter | — | New Jersey |
| 54 | James O'Keefe | 4 | Son | — | New Jersey |
| 55 | Mary Ellen O'Keefe | 2 | Daughter | — | New Jersey |
| 56 | Kathleen O'Keefe | 0 | Daughter | — | New Jersey |
| 57 | Ann O'Keefe | 25 | Sister | Demonstrator | New Jersey |
| 58 | Jane O'Keefe | 20 | Sister | — | New Jersey |
| 59 | John O'Keefe | 14 | Brother | — | New Jersey |
| 60 | Mary O'Keefe | 12 | Sister | — | New Jersey |
| 61 | James Fitzpatrick | 42 | Head | Machinist | New York |
| 62 | Myrtle X Fitzpatrick | 39 | Wife | — | Pennsylvania |
| 63 | Jane Fitzpatrick | 19 | Daughter | Stenographer | Pennsylvania |
| 64 | Alice Fitzpatrick | 18 | Daughter | Assistant | Pennsylvania |
| 65 | Grace Fitzpatrick | 17 | Daughter | — | Pennsylvania |
| 66 | Joseph Fitzpatrick | 14 | Son | — | New Jersey |
| 67 | Mary Fitzpatrick THIS PERSON | 11 | Daughter | — | New Jersey |
| 68 | John Fitzpatrick | 7 | Son | — | New Jersey |
| 69 | Margaret Fitzpatrick | 4 | Daughter | — | New Jersey |
| 70 | Harold Elphick | 54 | Head | Mason | England |
| 71 | Mary Ruth X Elphick | 44 | Wife | — | New Jersey |
| 72 | Harold Jr. Elphick | 22 | Son | Mason | New Jersey |
| 73 | Irene Elphick | 23 | Daughter | Stenographer | New Jersey |
| 74 | William Elphick | 19 | Son | New Worker | New Jersey |
| 75 | Elizabeth Elphick | 16 | Daughter | — | New Jersey |
| 76 | Richard Elphick | 13 | Son | — | New Jersey |
| 77 | Joan Elphick | 8 | Daughter | — | New Jersey |
| 78 | Winifred Elphick | 7 | Daughter | — | New Jersey |
| 79 | Edward X Allard | 55 | Head | Proprietor | Connecticut |
| 80 | Dorothy Allard | 45 | Wife | — | New York |
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)