MS
Mary Snow — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Snow across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Snow |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 5 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Medford City |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Snow | Son | — | 5 | ~1935 |
| Mary Snow | Daughter | — | 11 | ~1929 |
| Pearl Snow | Daughter | — | 9 | ~1931 |
| Nancy Snow | Daughter | — | 3 | ~1937 |
| Mary Snow | Spouse | — | 37 | ~1903 |
| Emiline Snow | Daughter | — | 7 | ~1933 |
| James Snow | Head | — | 35 | ~1905 |
| Elizabeth Snow | Other | — | 70 | ~1870 |
Census Appearances
1930
Middlesex, Massachusetts
Other, age 1
Middlesex, Massachusetts · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Snow |
| Given Name | Marjorie |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 11
Middlesex-County, Massachusetts · implied b. ~1929 — 8 household members
| Surname | Snow |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Class of Worker | 0 |
| Highest Grade | 5 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Snow across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Snow
Daughter · 1940 · age 11 · b. ~1929 · Massachusetts
★ You are viewing this record
Sibling
James Snow
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emiline Snow
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Snow
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pearl Snow
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01612-00179)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lorraine De Lisle | 15 | Daughter | — | Massachusetts |
| 42 | James Snow | 35 | Head | Painter | Newfoundland |
| 43 | Mary Snow | 37 | Wife | — | Nova Scotia |
| 44 | Mary E Snow THIS PERSON | 11 | Daughter | — | Massachusetts |
| 45 | Pearl F Snow | 9 | Daughter | — | Connecticut |
| 46 | Emiline Snow | 7 | Daughter | — | Massachusetts |
| 47 | James E Snow | 5 | Son | — | Massachusetts |
| 48 | Nancy A Snow | 3 | Daughter | — | Massachusetts |
| 49 | Elizabeth Snow | 70 | Mother | — | Newfoundland |
| 50 | Nora Garrity | 76 | Head | — | Eire |
| 51 | John E Garrity | 41 | Son | Teacher | Massachusetts |
| 52 | Thomas Garrity | 39 | Son | Cashier | Massachusetts |
| 53 | Elmer Curson | 35 | Head | Stock Clerk | Massachusetts |
| 54 | Eleanor Curson | 34 | Wife | — | Maine |
| 55 | Irving Curson | 14 | Son | — | Massachusetts |
| 56 | Richard Curson | 4 | Son | — | Massachusetts |
| 57 | Martyr Flora | 63 | Mother-in-law | — | Nova Scotia |
| 58 | Frank B Blodgett | 80 | Head | — | New Hampshire |
| 59 | Edna Jewell | 47 | Housekeeper | Housekeeper | New Hampshire |
| 60 | Clemens Kuntz | 70 | Head | — | Connecticut |
| 61 | Melvina Kuntz | 70 | Wife | — | Massachusetts |
| 62 | Helen Kuntz | 42 | Daughter | Teacher | Connecticut |
| 63 | Paul Graffeo | 53 | Head | President | Italy |
| 64 | Maria Graffeo | 45 | Wife | Cashier | Italy |
| 65 | Catherine Graffeo | 28 | Daughter | Bookkeeper | Massachusetts |
| 66 | Augusta Graffeo | 25 | Daughter | New Worker | Massachusetts |
| 67 | Antonette Graffeo | 23 | Daughter | New Worker | Massachusetts |
| 68 | Alphonse Graffeo | 21 | Son | — | Massachusetts |
| 69 | Anthony Graffeo | 19 | Son | — | Massachusetts |
| 70 | Michel Graffeo | 17 | Son | — | Massachusetts |
| 71 | Betty Graffeo | 14 | Daughter | — | Massachusetts |
| 72 | Joseph Graffeo | 12 | Son | — | Massachusetts |
| 73 | Grace Graffeo | 9 | Daughter | — | Massachusetts |
| 74 | Virginia Graffeo | 6 | Daughter | — | Massachusetts |
| 75 | Carol Graffeo | 4 | Daughter | — | Massachusetts |
| 76 | Lockhart G Blodgett | 44 | Head | Machinist | New Hampshire |
| 77 | Edwina Blodgett | 50 | Wife | — | Massachusetts |
| 78 | Stephen Blodgett | 19 | Son | — | Massachusetts |
| 79 | Jane Blodgett | 12 | Daughter | — | Massachusetts |
| 80 | Robert Fitzgerald | 16 | Nephew | — | Massachusetts |
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)