MH
Mary Hardy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Onondaga-County, New York
Our Model Tree links this Mary Hardy across the 1920, 1930 and 1940 US Censuses in Onondaga-County, New York (XGBoost, ~Confirmed), with identified parents Mary & Richard — first a daughter (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Onondaga-County, New York |
| Surname | Hardy |
| Given Name | Mary Kathleen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Syracuse City |
| 1935 Residence (County) | Onondaga |
| Additional Details | |
| Occupation | Stationary Fireman |
| Industry | Public school |
| Class of Worker | GW |
| Hours Worked | 56 |
| Income (1939) | 1400 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Stationary Fireman |
| Township / Ward | Syracuse City |
| Est. Birth Year | ~1919 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Hardy | Daughter | — | 21 | ~1919 |
| Richard Hardy | Head | — | 48 | ~1892 |
| Henry Tierney | Other | — | 43 | ~1897 |
| William Tierney | Other | — | 21 | ~1919 |
| Mary Hardy | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Onondaga, New …
Daughter, age 1
Onondaga, New York · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hardy |
| Given Name | Mary F. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | none |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Onondaga, New …
Daughter, age 11
Onondaga, New York · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hardy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Onondaga-County, New …
Daughter, age 21
Onondaga-County, New York · implied b. ~1919 — 5 household members
| Surname | Hardy |
| Given Name | Mary Kathleen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Syracuse City |
| 1935 Residence (County) | Onondaga |
| Occupation | Stationary Fireman |
| Industry | Public school |
| Class of Worker | GW |
| Hours Worked | 56 |
| Income (1939) | 1400 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Hardy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Hardy (~0.92 confidence) and father Richard Hardy (~0.92 confidence) and mother Mary Hardy (~0.92 confidence) and father Richard Hardy (~0.92 confidence) and father Morris Hardy (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Hardy
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Richard Hardy
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Mary Hardy
b. ~1893
Source mother
● Household
· direct · ~0.92
Father
Richard Hardy
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Morris Hardy
b. ~1899
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Hardy
Daughter · 1940 · age 21 · b. ~1919 · New York
★ 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 — Onondaga-County, New York
Open full size
1940 US Federal Census — Onondaga-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02857-00154)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Mcclunni | 59 | Wife | — | New York |
| 2 | Leonard Mcclunni | 26 | Son | — | New York |
| 3 | Marion Mcclunni | 24 | Daughter | Collector | New York |
| 4 | Thomas Mcmahon | 65 | Head | Stenographer | New York |
| 5 | Elizabeth Mcmahon | 63 | Wife | Stenographer | New York |
| 6 | Gertrude Quinn | 32 | Daughter | Fireman | New York |
| 7 | John A. Quinn | 12 | Grand-son | — | New York |
| 8 | James K. Quinn | 9 | Grand-son | — | New York |
| 9 | Robert C. Quinn | 8 | Grand-son | — | New York |
| 10 | Ivor Dillon | 39 | Head | Salesgirl | New York |
| 11 | Mary Dillon | 39 | Wife | — | New York |
| 12 | Richard W. Hardy | 48 | Head | Fireman | New York |
| 13 | Mary T. Hardy | 53 | Wife | Teacher | New York |
| 14 | Mary Kathleen Hardy THIS PERSON | 21 | Daughter | Stationary Fireman | New York |
| 15 | Henry J. Tierney | 43 | Brother-in-law | — | New York |
| 16 | William C. Tierney | 21 | Nephew | Stenographer | New York |
| 17 | Michael Kreutter | 53 | Head | Brakeman | New York |
| 18 | Ella Kreutter | 41 | Wife | Stock Clerk | New York |
| 19 | Louis Calkins | 62 | Head | Chauffeur | New York |
| 20 | Grace Calkins | 63 | Wife | Bookkeeper | New York |
| 21 | George Williams | 61 | Head | Carpenter | New York |
| 22 | Laura Williams | 55 | Wife | — | England |
| 23 | Isa Spinks | 37 | Head | Laborer | New York |
| 24 | William Spinks | 16 | Son | — | New York |
| 25 | Barbara S. Spinks | 14 | Daughter | Kitchen Helper | New York |
| 26 | George D. Neat | 39 | Head | — | New York |
| 27 | Loretta M. Neat | 36 | Wife | — | New York |
| 28 | Dorothy M. Neat | 12 | Daughter | — | New York |
| 29 | George R. Neat | 8 | Son | Fireman | New York |
| 30 | Clara Alice Nelson | 66 | Head | — | Massachusetts |
| 31 | Leona Nelson | 33 | Daughter | — | New York |
| 32 | Fred Schaner | 60 | Head | Clerk | New York |
| 33 | Eva B. Schaner | 53 | Wife | Painter | New York |
| 34 | Dominick Frank | 40 | Head | — | New York |
| 35 | Bertha Frank | 26 | Wife | Electrician | New York |
| 36 | Francis Frank | 4 | Son | — | New York |
| 37 | Francis H. Frank | 61 | Mother | — | New York |
| 38 | Heber Long | 62 | Head | Tailoress | England |
| 39 | Millicent Long | 54 | Wife | Contractor | New York |
| 40 | Lois B. Long | 19 | Daughter | — | New York |
Pedigree Summary
Mary
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)