MR
Mary Russell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Russell across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & Joseph — first a daughter (b.~1909), then head of a 6-person household.
Age 31
b. ~1909
Female
Daughter
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Russell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Clerk |
| Industry | Western Union |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 266 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Boston City |
| Est. Birth Year | ~1909 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mortimer | Daughter | — | 18 | ~1922 |
| Catherine Mortimer | Daughter | — | 31 | ~1909 |
| Mary Mortimer | Daughter | — | 32 | ~1908 |
| Mary Russell | Daughter | — | 31 | ~1909 |
| John Mortimer | Head | — | 64 | ~1876 |
| Charles Russell | Other | — | 29 | ~1911 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 10
Middlesex, Massachusetts · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Russell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 21
Middlesex, Massachusetts · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Russell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 31
Suffolk-County, Massachusetts · implied b. ~1909 — 6 household members
| Surname | Russell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Clerk |
| Industry | Western Union |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 266 |
| Highest Grade | H 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 Russell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mortimer (~0.92 confidence) and father Joseph Russell (~0.92 confidence) and father John Russell (~0.92 confidence) and mother Sadie Russell (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mortimer
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Joseph Russell
b. ~1885
Source father
● Household
· direct · ~0.92
Father
John Russell
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Sadie Russell
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Russell
Daughter · 1940 · age 31 · b. ~1909 · Massachusetts
★ You are viewing this record
Sibling
Mary Mortimer
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mortimer
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mortimer
Sibling · 1940 · age 31
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
29 people indexed on this census page (nara:1940:m-t0627-01657-00651)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Annie Amico | 46 | Wife | — | Italy |
| 2 | Gaetano Amico | 27 | Son | Waiter | Massachusetts |
| 3 | George Donoghue | 26 | Head | Spinner | Massachusetts |
| 4 | Erika Donoghue | 25 | Wife | — | Massachusetts |
| 5 | Enrico Guarente | 53 | Head | Presser | Italy |
| 6 | Eleanor Guarente | 51 | Wife | — | Italy |
| 7 | Daniel Guarente | 24 | Son | Wait|Waiter | Massachusetts |
| 8 | Margaret Guarente | 19 | Daughter | Candy Maker | Massachusetts |
| 9 | Enrico Guarente | 17 | Son | New Worker | Massachusetts |
| 10 | James Hyslop | 68 | Head | Bridge Worker | Scotland |
| 11 | Minnie Hyslop | 66 | Wife | — | Massachusetts |
| 12 | Catherine Digard | 73 | Head | — | Massachusetts |
| 13 | Frank Hodgins | 26 | Son-in-law | Clerk - Counter | Massachusetts |
| 14 | Mary Hodgins | 30 | Daughter | — | Massachusetts |
| 15 | John Hodgins | 5 | Grandson | — | Massachusetts |
| 16 | John Mortimer | 64 | Head | — | Eire |
| 17 | Mary Mortimer | 32 | Daughter | Telephone Operator | Massachusetts |
| 18 | Catherine Mortimer | 31 | Daughter | Clerk | Massachusetts |
| 19 | Margaret Mortimer | 18 | Daughter | New Worker | Massachusetts |
| 20 | Charles Russell | 29 | Son-in-law | Clerk | Massachusetts |
| 21 | Mary Russell THIS PERSON | 31 | Daughter | Clerk | Massachusetts |
| 22 | Arthur Cordero | 40 | Head | Welder | Canada French |
| 23 | Ada Cordero | 32 | Wife | — | Canada French |
| 24 | Helen Cordero | 16 | Daughter | — | Massachusetts |
| 25 | Gladys Cordero | 14 | Daughter | — | Massachusetts |
| 26 | Catherine Cordero | 8 | Daughter | — | Massachusetts |
| 27 | Dorothy Cordero | 7 | Daughter | — | Massachusetts |
| 28 | Arthur Cordero | 5 | Son | — | Massachusetts |
| 29 | Joseph Cordero | 0 | Son | — | Massachusetts |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)