MD
Mary Dennis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grafton-County, New Hampshire
Our Model Tree links this Mary Dennis across the 1920, 1930 and 1940 US Censuses in Grafton-County, New Hampshire (XGBoost, ~Confirmed) — first a spouse (b.~1893), then head of a 4-person household.
Age 47
b. ~1893
Female
Spouse
Born: Vermont
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Grafton-County, New Hampshire |
| Surname | Dennis |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Vermont |
| 1935 Residence (City) | Orford |
| 1935 Residence (County) | Grafton |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
| Township / Ward | Orford |
| Est. Birth Year | ~1893 |
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 |
|---|---|---|---|---|
| Mary Dennis | Spouse | — | 47 | ~1893 |
| Ralph Dennis | Son | — | 13 | ~1927 |
| Evelyn Dennis | Daughter | — | 18 | ~1922 |
| Walter Dennis | Head | — | 49 | ~1891 |
Census Appearances
1920
Grafton, New …
Spouse, age 28
Grafton, New Hampshire · implied b. ~1892 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dennis |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Vermont |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Canada |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
1930
Grafton, New …
Spouse, age 38
Grafton, New Hampshire · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dennis |
| Given Name | Mary T. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Vermont |
| Age at First Marriage | 24 |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Canada French |
| Can Read/Write | Yes |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
1940
Grafton-County, New …
Spouse, age 47
Grafton-County, New Hampshire · implied b. ~1893 — 4 household members
| Surname | Dennis |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Vermont |
| 1935 Residence (City) | Orford |
| 1935 Residence (County) | Grafton |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
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 Dennis 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 Dennis
Spouse · 1940 · age 47 · b. ~1893 · New Hampshire
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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 — Grafton-County, New Hampshire
Open full size
1940 US Federal Census — Grafton-County, New Hampshire
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02287-00465)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John H. Bedell | 17 | Son | Caretaker | New Hampshire |
| 42 | Robert W. Bedell | 15 | Son | — | New Hampshire |
| 43 | Samuel H. Simpson | 62 | Head | Caretaker | Maine |
| 44 | Florence S. Simpson | 63 | Wife | House Keeper | New Hampshire |
| 45 | Clarence H. Simpson | 50 | Head | Caretaker | Maine |
| 46 | Gertrude G. Simpson | 49 | Wife | House Keeper | Vermont |
| 47 | Emma G. Culver | 89 | Mother in law | — | Vermont |
| 48 | Edward M. Warren | 61 | Head | Retired | Mass |
| 49 | Gertrude V. Warren | 56 | Wife | — | Vermont |
| 50 | Ralph E. Ramsey | 54 | Caretaker | Caretaker | New Hampshire |
| 51 | Nellie C. Ramsey | 54 | Servant | House Keeper | New Hampshire |
| 52 | Walter B. Dennis | 49 | Head | Farmer | New Hampshire |
| 53 | Mary J. Dennis THIS PERSON | 47 | Wife | — | Vermont |
| 54 | Evelyn M. Dennis | 18 | Daughter | — | New Hampshire |
| 55 | Ralph E. Dennis | 13 | Son | — | New Hampshire |
| 56 | Phyllis B. Green | 31 | Head | — | New Jersey |
| 57 | Peter Green | 4 | Son | — | New Hampshire |
| 58 | William Green | 3 | Son | — | New Hampshire |
| 59 | Anne D. Green | 1 | Daughter | — | New Hampshire |
| 60 | Vernon D. Cummings | 19 | Head | Farm Laborer | Vermont |
| 61 | Marjorie E. Cummings | 18 | Wife | — | Vermont |
| 62 | Leida Cummings | 37 | Mother | Laundress | Vermont |
| 63 | Gilbert Jenks | 38 | Lodger | Lumberman | Vermont |
| 64 | James H. Flagg | 55 | Head | — | Canada Eng |
| 65 | Mina Y. Flagg | 50 | Wife | — | New York |
| 66 | Marion M. Flagg | 17 | Daughter | — | Vermont |
| 67 | Natalie L. Flagg | 15 | Daughter | — | Vermont |
| 68 | James H. Jr. Flagg | 14 | Son | — | Vermont |
| 69 | Carrol L. Bean | 60 | Head | — | New Hampshire |
| 70 | Lutheria M. Bean | 51 | Wife | Nursing | Vermont |
| 71 | Margaret T. Bean | 25 | Daughter | Dress Assistant | New Hampshire |
| 72 | Carroll A. Bean | 21 | Son | — | New Hampshire |
| 73 | Richard H. Bean | 28 | Son | Farmer | New Hampshire |
| 74 | Beatrice M. Bean | 26 | Wife | — | Vermont |
| 75 | Merton O. Bean | 7 | Son | — | Vermont |
| 76 | Earl R. Bean | 3 | Son | — | New Hampshire |
| 77 | Myrtie R. Cook | 44 | Head | Housework | Vermont |
| 78 | Lyman S. Cook | 19 | Son | Laborer | New Hampshire |
| 79 | Warren H. Cook | 16 | Son | — | New Hampshire |
| 80 | Ernest Messier | 54 | Lodger | Farmer Labor | Vermont |
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)