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Mary Maguire — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this Mary Maguire across the 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 7-person household.
Age 18
b. ~1922
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Maguire |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Essex |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Est. Birth Year | ~1922 |
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 |
|---|---|---|---|---|
| Mary Maguire | Daughter | — | 18 | ~1922 |
| Eleanor Maguire | Daughter | — | 21 | ~1919 |
| Barbara Maguire | Daughter | — | 16 | ~1924 |
| John Maguire | Son | — | 11 | ~1929 |
| Edith Maguire | Spouse | — | 44 | ~1896 |
| William Maguire | Son | — | 23 | ~1917 |
| William Maguire | Head | — | 48 | ~1892 |
Census Appearances
1930
Essex, New …
Daughter, age 8
Essex, New Jersey · implied b. ~1922 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Maguire |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, New …
Daughter, age 18
Essex-County, New Jersey · implied b. ~1922 — 7 household members
| Surname | Maguire |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Essex |
| 1935 Residence (County) | Essex |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Maguire across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Maguire
Daughter · 1940 · age 18 · b. ~1922 · New Jersey
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Sibling
Eleanor Maguire
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Maguire
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Maguire
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Maguire
Sibling · 1940 · age 16
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
34 people indexed on this census page (nara:1940:m-t0627-02421-00774)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cathryn Hill | 29 | Wife | — | New Jersey |
| 42 | Joan Hill | 15 | Daughter | — | New Jersey |
| 43 | William Hall | 26 | Brother-in-law | Assembler | New Jersey |
| 44 | Wilbur Crane | 31 | Head | Foreman | New Jersey |
| 45 | Minnie Crane | 66 | Mother | — | Germany |
| 46 | John Finan | 41 | Head | Janitor | New Jersey |
| 47 | Margaret Finan | 35 | Wife | — | Pennsylvania |
| 48 | Margaret M. Finan | 5 | Daughter | — | New Jersey |
| 49 | Oliver Finan | 4 | Son | — | New Jersey |
| 50 | Ann Finan | 3 | Daughter | — | New Jersey |
| 51 | Dorothy Finan | 1 | Daughter | — | New Jersey |
| 52 | John Jr. Finan | 0 | Son | — | New Jersey |
| 53 | Walter Daugherty | 40 | Head | Tile Setter | New Jersey |
| 54 | Helen Daugherty | 35 | Wife | — | New Jersey |
| 55 | Anna M. Daugherty | 13 | Daughter | — | New Jersey |
| 56 | Rose Daugherty | 12 | Daughter | — | New Jersey |
| 57 | Arthur Daugherty | 35 | Brother | Foreman | New Jersey |
| 58 | William Maguire | 48 | Head | Foreman | Massachusetts |
| 59 | Edith Maguire | 44 | Wife | — | Massachusetts |
| 60 | Eleanor Maguire | 21 | Daughter | Stenographer | Massachusetts |
| 61 | William L. Maguire | 23 | Son | Canvasser | Massachusetts |
| 62 | Mary Maguire THIS PERSON | 18 | Daughter | — | Massachusetts |
| 63 | Barbara Maguire | 16 | Daughter | — | Massachusetts |
| 64 | John Maguire | 11 | Son | — | Massachusetts |
| 65 | Alice Morse | 49 | Head | — | New Jersey |
| 66 | Arthur G. Morse | 29 | Son | Meat Inspector | New Jersey |
| 67 | Warren Lewis | 58 | Lodger | Clerk | Canada-English |
| 68 | William Billerman | 55 | Head | Carpenter | Ohio |
| 69 | Beatrice Billerman | 53 | Wife | — | Ireland-North |
| 70 | Beatrice W. Billerman | 25 | Daughter | Nurse | New York |
| 71 | William P. Billerman | 23 | Son | Clerk | New Jersey |
| 72 | John C. Billerman | 19 | Son | Clerk | New Jersey |
| 73 | Robert K. Billerman | 12 | Son | — | New Jersey |
| 74 | Florence Manion | 73 | Sister | — | Ohio |
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)