MC
Mary Connolly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Passaic-County, New Jersey
Our Model Tree links this Mary Connolly across the 1920, 1930 and 1940 US Censuses in Passaic-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1885), then head of a 3-person household.
Age 55
b. ~1885
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Passaic-County, New Jersey |
| Surname | Connolly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Clifton |
| 1935 Residence (County) | Passaic |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | G 5 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Clifton |
| Est. Birth Year | ~1885 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Timothy Connolly | Head | — | 61 | ~1879 |
| Mary Connolly | Spouse | — | 55 | ~1885 |
| Elizabeth Connolly | Daughter | — | 24 | ~1916 |
Census Appearances
1920
Hudson, New …
Spouse, age 35
Hudson, New Jersey · implied b. ~1885 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1902 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Essex, New …
Spouse, age 45
Essex, New Jersey · implied b. ~1885 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connelly |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1902 |
| Age at First Marriage | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Passaic-County, New …
Spouse, age 55
Passaic-County, New Jersey · implied b. ~1885 — 3 household members
| Surname | Connolly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Clifton |
| 1935 Residence (County) | Passaic |
| Naturalization Status | Naturalized |
| Highest Grade | G 5 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Connolly across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Connolly
Spouse · 1940 · age 55 · b. ~1885 · New Jersey
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Passaic-County, New Jersey
Open full size
1940 US Federal Census — Passaic-County, New Jersey
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02375-00763)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fannie Auerbach | 11 | Daughter | — | New Jersey |
| 2 | Constance Auerbach | 9 | Daughter | — | New Jersey |
| 3 | Edward Vander Vliet | 50 | Head | Truck Driver | New Jersey |
| 4 | Elsie Vander Vliet | 46 | Wife | Manager | New Jersey |
| 5 | Dorothy Vander Vliet | 17 | Daughter | — | New Jersey |
| 6 | Clara Vander Vliet | 14 | Daughter | — | New Jersey |
| 7 | Edward Jr Vander Vliet | 4 | Son | — | New Jersey |
| 8 | Frank Steigner | 53 | Head | Weaver | New Jersey |
| 9 | Emily Steigner | 49 | Wife | — | New Jersey |
| 10 | John Donnelly | 30 | Son-in-law | Asst. Mgr. | New Jersey |
| 11 | Anna Donnelly | 28 | Daughter | — | New Jersey |
| 12 | Eileen Donnelly | 3 | Granddaughter | — | New Jersey |
| 13 | John Jr Donnelly | 1 | Grandson | — | New Jersey |
| 14 | Thomas Welsh | 70 | Head | — | New Jersey |
| 15 | Mary Welsh | 65 | Wife | — | Maryland |
| 16 | Joseph Welsh | 42 | Lodger | Mechanic | New Jersey |
| 17 | Samuel Stephani | 69 | Head | — | Italy |
| 18 | Ida Stephani | 57 | Wife | — | Italy |
| 19 | Elias Stephani | 24 | Son | Toolmaker | Rhode Island |
| 20 | Thomas Stephani | 22 | Son | Laborer | New Jersey |
| 21 | Jennie Stephani | 20 | Daughter | Weaver | New Jersey |
| 22 | Daniel Stephani | 17 | Son | — | New Jersey |
| 23 | Antonio Giordano | 55 | Head | Embroiderer | Italy |
| 24 | Adelaide Giordano | 42 | Wife | — | Italy |
| 25 | Anthony Giordano | 22 | Son | Embroiderer | New Jersey |
| 26 | Joseph Giordano | 15 | Son | — | New Jersey |
| 27 | Cornelius Mcfarland | 48 | Head | Salesman | New Jersey |
| 28 | Elsa Mcfarland | 50 | Wife | — | New York |
| 29 | Grace Mcfarland | 20 | Daughter | Typist | New Jersey |
| 30 | Howard Mcfarland | 14 | Son | — | New Jersey |
| 31 | Lawrence Munner | 31 | Head | Lineman | New Jersey |
| 32 | Margaret Munner | 29 | Wife | — | New Jersey |
| 33 | Margaret Munner | 2 | Daughter | — | New Jersey |
| 34 | John Smith | 41 | Head | Toolmaker | New Jersey |
| 35 | Viola Smith | 36 | Wife | — | New York |
| 36 | Richard Smith | 13 | Son | — | New Jersey |
| 37 | Timothy Connolly | 61 | Head | Engineer | Ireland |
| 38 | Mary Connolly THIS PERSON | 55 | Wife | — | Ireland |
| 39 | Elizabeth Connolly | 24 | Daughter | Nurse | 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)