MR
Mary Reardon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this Mary Reardon across the 1920, 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1868), then head of a 4-person household.
Age 72
b. ~1868
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | Reardon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Trenton City |
| Est. Birth Year | ~1868 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mathew Reardon | Head | — | 73 | ~1867 |
| John Reardon | Son | — | 41 | ~1899 |
| Mary Reardon | Spouse | — | 72 | ~1868 |
| Daniel Reardon | Son | — | 46 | ~1894 |
Census Appearances
1920
Mercer, New …
Spouse, age 50
Mercer, New Jersey · implied b. ~1870 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Reardon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1882 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Mercer, New …
Other, age 62
Mercer, New Jersey · implied b. ~1868 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Reardon |
| Given Name | Mary A |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1904 |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Mercer-County, New …
Spouse, age 72
Mercer-County, New Jersey · implied b. ~1868 — 4 household members
| Surname | Reardon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 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 Reardon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Reardon
Spouse · 1940 · age 72 · b. ~1868 · 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 — Mercer-County, New Jersey
Open full size
1940 US Federal Census — Mercer-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02437-00292)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gertrude Loxley | 53 | Head | — | France |
| 2 | William Loxley | 14 | Son | — | New Jersey |
| 3 | Joan Loxley | 10 | Daughter | — | New Jersey |
| 4 | Mathew Reardon | 73 | Head | — | New Jersey |
| 5 | Mary Reardon THIS PERSON | 72 | Wife | — | Ireland |
| 6 | Daniel Reardon | 46 | Son | Laborer | New Jersey |
| 7 | John Reardon | 41 | Son | — | New Jersey |
| 8 | B. Frank Armstrong | 38 | Head | Civil Engineer | New Jersey |
| 9 | Myrtle May Armstrong | 35 | Wife | — | New Jersey |
| 10 | June Myrtle Armstrong | 9 | Daughter | — | New Jersey |
| 11 | Ida May King | 61 | Mother in law | — | New Jersey |
| 12 | Ottilia Hillman | 72 | Head | — | Germany |
| 13 | William C. Hillman | 35 | Son | Truck Driver | New Jersey |
| 14 | Harvey Wright | 55 | Son in law | Proprietor | New Jersey |
| 15 | Freda Wright | 47 | Daughter | Housekeeper | New Jersey |
| 16 | Teresa Hillman | 36 | Daughter | Laundress | Pennsylvania |
| 17 | Constance Hillman | 14 | Granddaughter | — | New Jersey |
| 18 | William D. Thorn | 70 | Head | — | New Jersey |
| 19 | Bertha Thorn | 61 | Wife | — | New Jersey |
| 20 | Laurence E. Thorn | 36 | Son | Scatite Worker | New Jersey |
| 21 | George M. Sincerge | 32 | Son in law | Driver | Pennsylvania |
| 22 | Myrtle Sincerge | 33 | Daughter | — | New Jersey |
| 23 | Grace Sincerge | 10 | Granddaughter | — | New Jersey |
| 24 | William Sincerge | 8 | Grandson | — | New Jersey |
| 25 | Anthony Gulden | 54 | Head | Floor Man | New York |
| 26 | Lulu Gulden | 51 | Wife | — | New Jersey |
| 27 | Charles Gulden | 23 | Son | Handy Man | New Jersey |
| 28 | George Gulden | 22 | Son | Carpenter | New Jersey |
| 29 | John Gulden | 20 | Son | Saw Worker | New Jersey |
| 30 | Robert Gulden | 17 | Son | New Worker | New Jersey |
| 31 | Lester La Rue | 33 | Son in law | Bus Driver | New Jersey |
| 32 | Mary La Rue | 31 | Daughter | — | New Jersey |
| 33 | Lester La Rue | 5 | Grandson | — | New Jersey |
| 34 | Thomas Johnson | 67 | Head | Millboard Work | Scotland |
| 35 | Euphemia Johnson | 68 | Wife | — | Scotland |
| 36 | Annie Johnson | 40 | Daughter | — | Scotland |
| 37 | Euphemia Williams | 38 | Daughter | Sprayer | Scotland |
| 38 | Colin Williams | 14 | Grandson | — | New Jersey |
| 39 | June Williams | 12 | Granddaughter | — | New Jersey |
| 40 | Euphemia Johnson | 9 | Granddaughter | — | 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)