MG
Mary Gross — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Gross across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 11-person household.
Age 12
b. ~1928
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Gross |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1928 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Agnes Gross | Daughter | — | 13 | ~1927 |
| Gertrude Gross | Daughter | — | 16 | ~1924 |
| Robert Gross | Son | — | 7 | ~1933 |
| Regina Gross | Spouse | — | 37 | ~1903 |
| John Gross | Son | — | 9 | ~1931 |
| William Gross | Son | — | 10 | ~1930 |
| Elmer Gross | Head | — | 47 | ~1893 |
| Dorothy Gross | Daughter | — | 4 | ~1936 |
| Grace Gross | Daughter | — | 2 | ~1938 |
| Mary Gross | Daughter | — | 12 | ~1928 |
| Jean Gross | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 2
Suffolk, Massachusetts · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gross |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 12
Suffolk-County, Massachusetts · implied b. ~1928 — 11 household members
| Surname | Gross |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | 4 |
| 1935 Residence | Same Place |
| 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 Gross across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Gross
Daughter · 1940 · age 12 · b. ~1928 · Massachusetts
★ You are viewing this record
Sibling
John Gross
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Gross
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Gross
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Gross
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Gross
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Gross
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Gross
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Gross
Sibling · 1940 · age 6
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01659-00698)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Catherine Mccrevan | 53 | Wife | — | Eire |
| 42 | George Mccrevan | 23 | Son | Field Worker | Massachusetts |
| 43 | William Mccrevan | 20 | Son | Elevator Operator | Massachusetts |
| 44 | May Mccrevan | 16 | Daughter | — | Massachusetts |
| 45 | Helen Mccrevan | 12 | Daughter | — | Massachusetts |
| 46 | Mary Hogan | 28 | Head | Laborer | Canada English |
| 47 | Alphonsus Hogan | 34 | Husband | Laborer | Canada English |
| 48 | Marguerite Hogan | 10 | Daughter | — | Massachusetts |
| 49 | Dorothy Hogan | 9 | Daughter | — | Massachusetts |
| 50 | Shirley Hogan | 5 | Daughter | — | Massachusetts |
| 51 | John Hogan | 2 | Son | — | Massachusetts |
| 52 | Marguerite Howell | 25 | Niece | — | Massachusetts |
| 53 | Harvey Howell | 6 | Nephew | — | Massachusetts |
| 54 | Vincent Mccann | 24 | Head | Laborer | Massachusetts |
| 55 | Leah Mccann | 22 | Wife | — | Canada English |
| 56 | Margaret Mccann | 3 | Daughter | — | Massachusetts |
| 57 | Frances Mccann | 3 | Daughter | — | Massachusetts |
| 58 | Alice Mccann | 1 | Daughter | — | Massachusetts |
| 59 | Charles Hawkins | 55 | Head | — | Massachusetts |
| 60 | Mary Hawkins | 50 | Wife | — | Massachusetts |
| 61 | Mary M Terrell | 29 | Daughter | — | Massachusetts |
| 62 | Charles Terrell | 7 | Grandson | — | Massachusetts |
| 63 | Mary E Terrell | 6 | Granddaughter | — | Massachusetts |
| 64 | Patricia Terrell | 2 | Granddaughter | — | Massachusetts |
| 65 | William Hayes | 62 | Lodger | — | Massachusetts |
| 66 | Edward Hayes | 31 | Lodger | Laborer | Massachusetts |
| 67 | Bartholomew Hurley | 70 | Uncle | — | Eire |
| 68 | Thomas Gallagher | 50 | Lodger | Laborer | Massachusetts |
| 69 | Elizabeth White | 81 | Lodger | — | Massachusetts |
| 70 | Elmer E Gross | 47 | Head | Riggers Helper | Pennsylvania |
| 71 | Regina Gross | 37 | Wife | — | Massachusetts |
| 72 | Gertrude Gross | 16 | Daughter | — | Massachusetts |
| 73 | Agnes Gross | 13 | Daughter | — | Massachusetts |
| 74 | Mary Gross THIS PERSON | 12 | Daughter | — | Massachusetts |
| 75 | William Gross | 10 | Son | — | Massachusetts |
| 76 | John Gross | 9 | Son | — | Massachusetts |
| 77 | Robert Gross | 7 | Son | — | Massachusetts |
| 78 | Jean M Gross | 6 | Daughter | — | Massachusetts |
| 79 | Dorothy Gross | 4 | Daughter | — | Massachusetts |
| 80 | Grace Gross | 2 | Daughter | — | Massachusetts |
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)