MH
Mary Haines — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Haines across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Haines |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | H-7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1927 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ruth Haines | Daughter | — | 8 | ~1932 |
| Cecelia Haines | Daughter | — | 4 | ~1936 |
| Frank Haines | Daughter | — | 12 | ~1928 |
| Joseph Haines | Head | — | 40 | ~1900 |
| Mary Haines | Daughter | — | 13 | ~1927 |
| John Haines | Son | — | 9 | ~1931 |
| Joseph Haines | Son | — | 5 | ~1935 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 3
Suffolk, Massachusetts · implied b. ~1927 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Haines |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 13
Suffolk-County, Massachusetts · implied b. ~1927 — 7 household members
| Surname | Haines |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | H-7 |
| 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 Haines across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Haines
Daughter · 1940 · age 13 · b. ~1927 · Massachusetts
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Sibling
Cecelia Haines
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Haines
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Haines
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Haines
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Haines
Sibling · 1940 · age 12
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-t0627-01679-00233)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harry Hogan | 34 | Son | Agent | Massachusetts |
| 42 | Frances Hogan | 42 | Head | Waiter | Scotland |
| 43 | Helen Hogan | 35 | Wife | — | Scotland |
| 44 | William Hogan | 9 | Son | — | Massachusetts |
| 45 | John Hogan | 1 | Son | — | Massachusetts |
| 46 | Francis Hogan | 49 | Head | Salesman | Massachusetts |
| 47 | Paul Hogan | 13 | Brother | Newsboy | Massachusetts |
| 48 | Dooley Joseph Hogan | 62 | Head | Helper | Ireland |
| 49 | Catherine Hogan | 52 | Wife | — | Canada |
| 50 | Helen Hogan | 18 | Daughter | — | Canada |
| 51 | Eleanor Hogan | 14 | Daughter | — | Canada |
| 52 | Joseph Hogan | 10 | Son | — | Massachusetts |
| 53 | Albert H. Bates | 47 | Head | Machinist | Massachusetts |
| 54 | Ruth Bates | 45 | Wife | — | Massachusetts |
| 55 | Herbert Bates | 23 | Son | — | Massachusetts |
| 56 | Sophie Bates | 17 | Daughter | File Clerk | Massachusetts |
| 57 | George Bates | 16 | Son | — | Massachusetts |
| 58 | Robert Bates | 10 | Son | — | Massachusetts |
| 59 | Barbara Bates | 8 | Daughter | — | Massachusetts |
| 60 | Geraldine Bates | 6 | Daughter | — | Massachusetts |
| 61 | Blanche Bates | 4 | Daughter | — | Massachusetts |
| 62 | Arthur Herbert Bates | 0 | Son | — | Massachusetts |
| 63 | Joseph Haines | 40 | Head | — | Massachusetts |
| 64 | Mary Haines THIS PERSON | 13 | Daughter | — | Massachusetts |
| 65 | Frank Haines | 12 | Daughter | — | Massachusetts |
| 66 | John Haines | 9 | Son | — | Massachusetts |
| 67 | Ruth Haines | 8 | Daughter | — | Massachusetts |
| 68 | Joseph Haines | 5 | Son | — | Massachusetts |
| 69 | Cecelia Haines | 4 | Daughter | — | Massachusetts |
| 70 | Charles White | 29 | Head | Tree Surgeon | Massachusetts |
| 71 | Thomas White | 25 | Wife | — | Massachusetts |
| 72 | Chester White | 8 | Son | — | Massachusetts |
| 73 | Richard White | 7 | Son | — | Massachusetts |
| 74 | Shirley White | 5 | Daughter | — | Massachusetts |
| 75 | Edward White | 3 | Son | — | Massachusetts |
| 76 | Donald White | 1 | Son | — | Massachusetts |
| 77 | Edward Buckley | 58 | Head | Store Clerk | Massachusetts |
| 78 | Theresa Buckley | 45 | Wife | — | Massachusetts |
| 79 | Anna Buckley | 16 | Daughter | — | Massachusetts |
| 80 | William Buckley | 15 | Son | — | 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)