MC
Margaret Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Margaret Clark across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Robert & Mary — first a daughter (b.~1896), then head of a 4-person household.
Age 44
b. ~1896
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Clark |
| Given Name | Margaret A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | office |
| Industry | truck body co. |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 1850 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Office |
| Township / Ward | Boston City |
| Est. Birth Year | ~1896 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Clark | Daughter | — | 44 | ~1896 |
| John Clark | Head | — | 65 | ~1875 |
| William Clark | Son | — | 36 | ~1904 |
| Annie Clark | Spouse | — | 66 | ~1874 |
Census Appearances
1920
Suffolk, Massachusetts
Daughter, age 24
Suffolk, Massachusetts · implied b. ~1896 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Canada |
| Occupation | Bookkeeper |
| Industry | Wholesale Drug Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Daughter, age 34
Suffolk, Massachusetts · implied b. ~1896 — 45 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Canada |
| Occupation | Bookkeeper |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 44
Suffolk-County, Massachusetts · implied b. ~1896 — 4 household members
| Surname | Clark |
| Given Name | Margaret A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | office |
| Industry | truck body co. |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 1850 |
| 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 Margaret Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Clark (~0.92 confidence) and mother Mary Clark (~0.92 confidence) and mother Annie Clark (~0.92 confidence) and father John Clark (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Clark
b. ~1859
Source father
● Household
· direct · ~0.92
Mother
Mary Clark
b. ~1864
Source mother
● Household
· direct · ~0.92
Mother
Annie Clark
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
John Clark
b. ~1875
Source father
● Household
· direct · ~0.92
This person
Anchor record
Margaret Clark
Daughter · 1940 · age 44 · b. ~1896 · Massachusetts
★ You are viewing this record
Sibling
William Clark
Sibling · 1940 · age 36
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-t0627-01682-00039)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John W. Clark | 65 | Head | Tower Man | Canada-Eng |
| 2 | Annie Clark | 66 | Wife | None | Massachusetts |
| 3 | Margaret A. Clark THIS PERSON | 44 | Daughter | Office | Massachusetts |
| 4 | William B. Clark | 36 | Son | Aeroplane Engineer | Massachusetts |
| 5 | Annie O'Keefe | 72 | Head | None | Massachusetts |
| 6 | Margaret A. O'Keefe | 68 | Wife | None | Dorchester |
| 7 | Elizabeth G. O'Keefe | 46 | Son | Machinist | Massachusetts |
| 8 | Elizabeth Thompson | 44 | Lodger | None | Massachusetts |
| 9 | Annie Sayles | 65 | Lodger | Gardener | Ireland |
| 10 | Thomas Benson | 33 | Lodger | Shipper | Massachusetts |
| 11 | Bertha O'Neil | 46 | Lodger | Packer | Massachusetts |
| 12 | Mary A. White | 78 | Head | None | Massachusetts |
| 13 | Mary A. White | 53 | Daughter | None | Massachusetts |
| 14 | Patrick J. Dunn | 50 | Head | Insurance Agent | Massachusetts |
| 15 | Winifred Dunn | 45 | Wife | None | Canada-Eng |
| 16 | Edward L. Dunn | 15 | Son | None | Massachusetts |
| 17 | John F. Casey | 54 | Head | Doctor | Connecticut |
| 18 | Elizabeth M. Casey | 51 | Wife | None | Massachusetts |
| 19 | John F. Jr. Casey | 23 | Son | None | Massachusetts |
| 20 | Thomas W. Casey | 21 | Son | None | Massachusetts |
| 21 | Mary E. Casey | 19 | Daughter | None | Massachusetts |
| 22 | George H. Casey | 18 | Son | None | Massachusetts |
| 23 | Richard H. Casey | 16 | Son | None | Massachusetts |
| 24 | Elizabeth A. Casey | 14 | Daughter | None | Massachusetts |
| 25 | William F. Casey | 12 | Son | None | Massachusetts |
| 26 | Margaret E. Burke | 29 | Maid | Maid | Irish Free State |
| 27 | James F. Mullin | 44 | Head | None | Massachusetts |
| 28 | Mary A. Mullin | 37 | Wife | None | Canada-Eng |
| 29 | Mary Mullin | 28 | Daughter | None | Massachusetts |
| 30 | Harold Mullin | 26 | Son | None | Massachusetts |
| 31 | Neil Beaton | 62 | Head | Steam Worker | Canada-Eng |
| 32 | Mary Beaton | 44 | Wife | None | Canada-Eng |
| 33 | Charles Beaton | 19 | Son | Worker | Massachusetts |
| 34 | Margaret Beaton | 15 | Daughter | None | Massachusetts |
| 35 | Anna Beaton | 14 | Daughter | None | Massachusetts |
| 36 | Marie Beaton | 13 | Daughter | None | Massachusetts |
| 37 | Cameron Beaton | 9 | Son | None | Massachusetts |
| 38 | Rita Beaton | 7 | Daughter | None | Massachusetts |
| 39 | Jean Beaton | 4 | Daughter | None | Massachusetts |
| 40 | Theresa Beaton | 1 | Daughter | None | Massachusetts |
Pedigree Summary
Margaret + 1 sibling
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)