MD
Mary Day — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grafton-County, New Hampshire
Our Model Tree links this Mary Day across the 1920, 1930 and 1940 US Censuses in Grafton-County, New Hampshire (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 5-person household.
Age 43
b. ~1897
Female
Spouse
Born: New Hampshire
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Grafton-County, New Hampshire |
| Surname | Day |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Lyme Center |
| 1935 Residence (County) | Grafton |
| Additional Details | |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Township / Ward | Lyme Center |
| Est. Birth Year | ~1897 |
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 |
|---|---|---|---|---|
| Ruth Day | Daughter | — | 21 | ~1919 |
| William Day | Head | — | 52 | ~1888 |
| Jasper Day | Son | — | 15 | ~1925 |
| Roy Day | Son | — | 9 | ~1931 |
| Mary Day | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Grafton, New …
Spouse, age 22
Grafton, New Hampshire · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | New Hampshire |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1930
Grafton, New …
Spouse, age 33
Grafton, New Hampshire · implied b. ~1897 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Age at First Marriage | 21 |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | New Hampshire |
| Can Read/Write | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1940
Grafton-County, New …
Spouse, age 43
Grafton-County, New Hampshire · implied b. ~1897 — 5 household members
| Surname | Day |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Lyme Center |
| 1935 Residence (County) | Grafton |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 Day 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 Day
Spouse · 1940 · age 43 · b. ~1897 · 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-t0627-02287-00411)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gerald R. Gray | 12 | Son | — | New Hampshire |
| 2 | Harley Jr. Gray | 7 | Son | — | New Hampshire |
| 3 | Herbert E. Webster | 39 | Head | Mill Hand | Vermont |
| 4 | Catherine E. Webster | 44 | Wife | Housework | Vermont |
| 5 | William Day | 52 | Head | Proprietor | Maine |
| 6 | Mary Day THIS PERSON | 43 | Wife | — | New Hampshire |
| 7 | Ruth Day | 21 | Daughter | Servant | New Hampshire |
| 8 | Jasper Day | 15 | Son | Chipper | New Hampshire |
| 9 | Roy Day | 9 | Son | — | New Hampshire |
| 10 | Clarence Gray | 64 | Head | Laborer | Vermont |
| 11 | Philias Guion | 55 | Head | Woods Boss | Canada French |
| 12 | Gerard Guion | 24 | Son | Truck Man | Canada French |
| 13 | Armand Guion | 21 | Son | Teamster | Canada French |
| 14 | Roland Guion | 19 | Son | Chopper | Canada French |
| 15 | Paul J. Guion | 16 | Son | — | Canada French |
| 16 | Alcide Guion | 33 | Son | Woods Cook | Canada French |
| 17 | Mary R. Guion | 29 | Daughter-in-law | Cook'S Helper | Canada French |
| 18 | Dorothy A. Guion | 5 | Granddaughter | — | Maine |
| 19 | Donald C. Guion | 1 | Grandson | — | Vermont |
| 20 | Guy A. Smith | 52 | Boarder | Chopper | Maine |
| 21 | Sanders Jr. Gaudet | 27 | Boarder | Scaler | Canada French |
| 22 | Ernest Anderson | 42 | Head | Chopper | Sweden |
| 23 | Alma O. Anderson | 46 | Wife | — | Canada French |
| 24 | Elmer H. Q. Sheldon | 52 | Head | Watchman | South Dakota |
| 25 | Edd M. Cutting | 76 | Head | Operator | New Hampshire |
| 26 | Gracie L. Q. Cutting | 60 | Wife | Assistant Librarian | New Hampshire |
| 27 | Phineas A. Reed | 83 | Mother-in-law | — | New Hampshire |
| 28 | Bessie M. Reed | 36 | Cousin-in-law | — | Vermont |
| 29 | Charles P. Dimick | 75 | Head | Operator | New Hampshire |
| 30 | Florence J. Q. Dimick | 63 | Wife | — | New Hampshire |
| 31 | Kenneth C. Dimick | 22 | Son | Truck Driver | New Hampshire |
| 32 | George B. Elder | 57 | Head | Operator | Canada English |
| 33 | Rosalie L. Elder | 75 | Wife | — | New Hampshire |
| 34 | Roger B. Elder | 19 | Son | Dishwasher | New Hampshire |
| 35 | Anna R. Elder | 13 | Daughter | — | New Hampshire |
| 36 | Levi O. White | 65 | Head | Operator | New York |
| 37 | Mary Miller | 33 | Housekeeper | Housekeeper | Pennsylvania |
| 38 | Lee W. Piper | 49 | Head | Partner | New Hampshire |
| 39 | Katherine A. Q. Piper | 76 | Wife | — | Canada English |
| 40 | John W. Piper | 20 | Son | Shipper | New Hampshire |
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)