MK
Mary Keenan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this Mary Keenan across the 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1907), then head of a 7-person household.
Age 33
b. ~1907
Female
Spouse
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | Keenan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Trenton City |
| Est. Birth Year | ~1907 |
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 |
|---|---|---|---|---|
| Martin Keenan | Son | — | 9 | ~1931 |
| Vincent Keenan | Son | — | 7 | ~1933 |
| Mary Keenan | Spouse | — | 33 | ~1907 |
| Martin Keenan | Head | — | 33 | ~1907 |
| William Keenan | Son | — | 2 | ~1938 |
| Joseph Keenan | Son | — | 4 | ~1936 |
| Ruth Herbert | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Mercer, New …
Daughter, age 23
Mercer, New Jersey · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keenan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 22 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Mercer-County, New …
Spouse, age 33
Mercer-County, New Jersey · implied b. ~1907 — 7 household members
| Surname | Keenan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Hours Worked | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| 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 Keenan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Keenan
Spouse · 1940 · age 33 · b. ~1907 · New Jersey
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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
28 people indexed on this census page (nara:1940:m-t0627-02436-00516)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martin J. Keenan | 33 | Head | Squad Leader | New Jersey |
| 2 | Mary Keenan THIS PERSON | 33 | Wife | — | New Jersey |
| 3 | Martin Keenan | 9 | Son | — | New Jersey |
| 4 | Vincent Keenan | 7 | Son | — | New Jersey |
| 5 | Joseph Keenan | 4 | Son | — | New Jersey |
| 6 | William Keenan | 2 | Son | — | New Jersey |
| 7 | Ruth Herbert | 17 | Daughter | — | New Jersey |
| 8 | Eliza Hunt | 68 | Head | Manager | New Jersey |
| 9 | Bessie S. Hunt | 33 | Daughter | Teacher | New Jersey |
| 10 | Frederick Vandolt | 64 | Head | Watchman | New Jersey |
| 11 | Laura Vandolt | 69 | Wife | Clerk-Sales | New Jersey |
| 12 | Edna Stephens | 14 | Niece | — | New Jersey |
| 13 | Isaac Rickard | 62 | Head | Plumber | England |
| 14 | Bessie Rickard | 60 | Wife | — | England |
| 15 | Carrie Cooper | 64 | Head | — | New Jersey |
| 16 | Ida Cooper | 25 | Daughter | Sealer | New Jersey |
| 17 | William Livingston | 51 | Head | Laborer | England |
| 18 | Betty Livingston | 19 | Daughter | Childs Nurse | New Jersey |
| 19 | Miriam Crammer | 20 | Boarder | Classifier | Pennsylvania |
| 20 | Robert Walker | 31 | Head | Furnace Operator | New Jersey |
| 21 | Roselinn Walker | 36 | Wife | R.N. Nurse | New Jersey |
| 22 | Albert Jarvis | 34 | Head | Chauffeur | New Jersey |
| 23 | Anna Jarvis | 31 | Wife | R.N. Nurse | New Jersey |
| 24 | Albert Jarvis | 6 | Son | — | New Jersey |
| 25 | Julia Harper | 39 | Sister in law | Stenographer | New Jersey |
| 26 | Arthur Frisbie | 24 | Head | Printer | New Jersey |
| 27 | Mildred Frisbie | 24 | Wife | — | New Jersey |
| 28 | Arthur Jr. Frisbie | 2 | Son | — | 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)