MC
Mary Clifford — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Clifford across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 6-person household.
Age 11
b. ~1929
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Clifford |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Clifford | Head | — | 38 | ~1902 |
| Ellen Clifford | Daughter | — | 4 | ~1936 |
| Olive Clifford | Spouse | — | 36 | ~1904 |
| Margaret Clifford | Daughter | — | 6 | ~1934 |
| Mary Clifford | Daughter | — | 11 | ~1929 |
| James Clifford | Son | — | 9 | ~1931 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 1
Suffolk, Massachusetts · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clifford |
| Given Name | Mary O |
| Relationship to Head | Daughter |
| 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
Suffolk-County, Massachusetts
Daughter, age 11
Suffolk-County, Massachusetts · implied b. ~1929 — 6 household members
| Surname | Clifford |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Highest Grade | 5 |
| 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 Clifford across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Clifford
Daughter · 1940 · age 11 · b. ~1929 · Massachusetts
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Sibling
Margaret Clifford
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Clifford
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Clifford
Sibling · 1940 · age 4
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
39 people indexed on this census page (nara:1940:m-t0627-01680-00606)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ralph I. Scherer | 42 | Head | Assistant Purchasing Agent | Massachusetts |
| 2 | Frances T. Scherer | 40 | Wife | — | Massachusetts |
| 3 | Ralph R. Scherer | 17 | Son | — | Massachusetts |
| 4 | Sumner C. Scherer | 13 | Son | — | Massachusetts |
| 5 | Jean Mcintosh | 19 | Servant | Maid | Massachusetts |
| 6 | James J. Clifford | 38 | Head | Salesman | Massachusetts |
| 7 | Olive H. Clifford | 36 | Wife | — | Massachusetts |
| 8 | Mary Clifford THIS PERSON | 11 | Daughter | — | Massachusetts |
| 9 | James Jr. Clifford | 9 | Son | — | Massachusetts |
| 10 | Margaret Clifford | 6 | Daughter | — | Massachusetts |
| 11 | Ellen Clifford | 4 | Daughter | — | Massachusetts |
| 12 | Charles H. Botsford | 70 | Head | — | Massachusetts |
| 13 | Mary B. Botsford | 66 | Wife | — | Massachusetts |
| 14 | Alice D. Owen | 80 | Head | — | Maine |
| 15 | Evelyn Brown | 50 | Housekeeper | Housekeeper | Nova Scotia |
| 16 | Julia M. Kelley | 49 | Head | — | Maine |
| 17 | Elizabeth J. Walsh | 72 | Housekeeper | Housekeeper | Nova Scotia |
| 18 | Joseph L. Scully | 34 | Head | Salesman | Massachusetts |
| 19 | Margaret R. Scully | 38 | Sister | Teacher | Massachusetts |
| 20 | Catharine Scully | 75 | Mother | — | Irish Free State |
| 21 | Mary Sullivan | 18 | Servant | Maid | Massachusetts |
| 22 | Philip M. Patterson | 58 | Head | Salesman | Maine |
| 23 | Helen D. Patterson | 58 | Wife | — | Maine |
| 24 | Charles W. Sheen | 70 | Head | Salesman | Massachusetts |
| 25 | Katherine Sheen | 68 | Wife | — | Massachusetts |
| 26 | John J. Doyle | 45 | Head | Teacher | Massachusetts |
| 27 | Ellen S. Doyle | 45 | Wife | — | New Hampshire |
| 28 | John J. Jr. Doyle | 11 | Son | — | Massachusetts |
| 29 | Richard Doyle | 7 | Son | — | Massachusetts |
| 31 | Walter W. Newcombe | 43 | Head | Teacher | Massachusetts |
| 32 | Catherine S. Newcombe | 42 | Wife | — | Massachusetts |
| 33 | David S. Newcombe | 10 | Son | — | Massachusetts |
| 34 | Walter W. Jr. Newcombe | 7 | Son | — | Massachusetts |
| 35 | Robert J. Gromwell | 49 | Head | Assistant Manager | Massachusetts |
| 36 | Margaret A. Gromwell | 49 | Wife | — | New York |
| 37 | John F. Gromwell | 24 | Son | Clerk | Massachusetts |
| 38 | Robert J. Gromwell | 22 | Son | — | Massachusetts |
| 39 | Mary E. Cuddy | 50 | Sister in Law | Machine Operator | New York |
| 40 | Walter J. Sugden | 50 | Head | Cable Contractor | 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)