MH
Mary Hardy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kent-County, Michigan
Our Model Tree links this Mary Hardy across the 1920, 1930 and 1940 US Censuses in Kent-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1877), then head of a 3-person household.
Age 63
b. ~1877
Female
Spouse
Born: Rhode Island
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kent-County, Michigan |
| Surname | Hardy |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Grand Rapids |
| 1935 Residence (County) | Kent |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Township / Ward | Grand Rapids |
| Est. Birth Year | ~1877 |
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 |
|---|---|---|---|---|
| Margaret Hardy | Daughter | — | 16 | ~1924 |
| James Hardy | Head | — | 65 | ~1875 |
| Mary Hardy | Spouse | — | 63 | ~1877 |
Census Appearances
1920
Kent, Michigan
Spouse, age 42
Kent, Michigan · implied b. ~1878 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hardy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Father's Birthplace | New York |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Kent, Michigan
Other, age 53
Kent, Michigan · implied b. ~1877 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hardy |
| Given Name | Mary E |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Age at First Marriage | 25 |
| Father's Birthplace | Northern Ireland |
| Mother's Birthplace | Northern Ireland |
| Occupation | Yes |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Kent-County, Michigan
Spouse, age 63
Kent-County, Michigan · implied b. ~1877 — 3 household members
| Surname | Hardy |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Grand Rapids |
| 1935 Residence (County) | Kent |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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.
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This person
Anchor record
Mary Hardy
Spouse · 1940 · age 63 · b. ~1877 · Michigan
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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 — Kent-County, Michigan
Open full size
1940 US Federal Census — Kent-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01902-00062)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jacob W. Boon | 28 | Head | Crane Operator | Michigan |
| 42 | Gertrude D. Boon | 27 | Wife | — | Michigan |
| 43 | James S. Hardy | 65 | Head | Die Maker | England |
| 44 | Mary E. Hardy THIS PERSON | 63 | Wife | — | Rhode Island |
| 45 | Margaret M. Hardy | 16 | Daughter | — | Michigan |
| 46 | Arie A. Meeth | 49 | Head | Manager | Netherlands |
| 47 | Gloria Meeth | 23 | Daughter | — | Michigan |
| 48 | Marilyn Meeth | 8 | Daughter | — | Michigan |
| 49 | Robert Meeth | 5 | Son | — | Michigan |
| 50 | Ralph Hoeksema | 41 | Head | Excavator | Netherlands |
| 51 | Martha B. Hoeksema | 44 | Wife | — | Illinois |
| 52 | Raymond Hoeksema | 15 | Son | — | Michigan |
| 53 | Gideon Brouwer | 31 | Head | Druggist | Michigan |
| 54 | Lillian D. Brouwer | 30 | Wife | — | Michigan |
| 55 | Leroy Brouwer | 11 | Son | — | Michigan |
| 56 | Colleen Brouwer | 10 | Daughter | — | Michigan |
| 57 | John Freeman | 19 | Brother | — | Michigan |
| 58 | Henry Berger | 54 | Head | Foreman | Netherlands |
| 59 | Johanna Berger | 46 | Wife | — | Netherlands |
| 60 | Foster M. Fuller | 43 | Head | Inspector | Ohio |
| 61 | Katherine Fuller | 40 | Wife | — | Michigan |
| 62 | Lawrence D. Benedict | 22 | Head | Salesman | Michigan |
| 63 | Meyn A. Korsbacker | 31 | Head | Field Representative | Michigan |
| 64 | Roberta Korsbacker | 31 | Wife | — | Michigan |
| 65 | Mary C. Korsbacker | 1 | Daughter | — | Michigan |
| 66 | Howard C. Meyers | 23 | Head | Tool & Die Apprentice | Michigan |
| 67 | Mildred Meyers | 23 | Wife | Stenographer | Iowa |
| 68 | Lorraine Wieland | 20 | Sister-in-law | — | Michigan |
| 69 | Street Canal | None | — | — | — |
| 70 | Russ Labb | 41 | Head | Bookkeeper | Wisconsin |
| 71 | Helen Labb | 42 | Wife | — | Michigan |
| 72 | Dorothy Labb | 17 | Daughter | — | Michigan |
| 73 | Marian Labb | 15 | Daughter | — | Michigan |
| 74 | Edgar Vetterson | 38 | Head | Salesman | Wisconsin |
| 75 | Cecelia Vetterson | 20 | Wife | — | Michigan |
| 76 | Hoyt Hill | 42 | Head | Metal Finisher | Michigan |
| 77 | Julia Hill | 44 | Wife | — | Arkansas |
| 78 | William Hill | 14 | Son | — | Michigan |
| 79 | Betty E. Hill | 6 | Daughter | — | Michigan |
| 80 | Dale Palm | 42 | Head | Salesman | Ohio |
Related Census Records
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)