HC
Helen Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Helen Clark across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Ida & Flora — first a daughter (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Clark |
| Given Name | Helen E |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 25 |
| Income (1939) | 1850 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Teacher |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1912 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Clark | Daughter | — | 28 | ~1912 |
| Ida Sehuart Schuart | Head | — | 71 | ~1869 |
| Flora Clark | Spouse | — | 66 | ~1874 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 8
Middlesex, Massachusetts · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Helen B. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 18
Middlesex, Massachusetts · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Helen S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 28
Middlesex-County, Massachusetts · implied b. ~1912 — 3 household members
| Surname | Clark |
| Given Name | Helen E |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 25 |
| Income (1939) | 1850 |
| Highest Grade | C 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 Helen Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ida Sehuart Schuart (~0.92 confidence) and mother Flora Clark (~0.92 confidence) and father Walter Clark (~0.92 confidence) and mother Flora Clark (~0.92 confidence) and father Walter Clark (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ida Sehuart Schuart
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Flora Clark
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
Walter Clark
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Flora Clark
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
Walter Clark
b. ~1878
Source father
● Household
· direct · ~0.92
This person
Anchor record
Helen Clark
Daughter · 1940 · age 28 · b. ~1912 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01705-00144)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Adeline W Mcdermott | 82 | Aunt | — | Massachusetts |
| 2 | Louise S Droune | 66 | Sister | — | Massachusetts |
| 3 | Sebastian Archer | 27 | Head | Clerk | Massachusetts |
| 4 | Ruth D Archer | 24 | Wife | — | Massachusetts |
| 5 | Diane M Archer | 0 | daughter | — | Massachusetts |
| 6 | Frederick L Newcomb | 61 | Head | Salesman | Canada |
| 7 | Maude E Newcomb | 60 | Wife | — | England |
| 8 | Gloria J Newcomb | 15 | daughter | — | Massachusetts |
| 9 | Edna Foster | 12 | daughter | — | Massachusetts |
| 10 | Ida R Sehuart | Schuart | 71 | Head | — | Missouri |
| 11 | Flora B Clark | 66 | wife | — | Massachusetts |
| 12 | Helen E Clark THIS PERSON | 28 | daughter | Teacher | Massachusetts |
| 13 | Alfred G Turner | 51 | Head | Superintendent | New Hampshire |
| 14 | Eva C Turner | 44 | wife | — | England |
| 15 | Dorothy Turner | 6 | daughter | — | Canada |
| 16 | Anna E Doherty | 25 | Head | Secretary | Massachusetts |
| 17 | Virginia Saunders | 64 | Head | — | Germany |
| 18 | Solomon Saunders | 20 | Son | Clerk | Massachusetts |
| 19 | Charles C Hodgdon | 64 | Head | Laborer | Maine |
| 20 | Clementine Hodgdon | 63 | wife | — | Canada |
| 21 | Harry Gill | 38 | Son in law | Store Manager | New Hampshire |
| 22 | Doris Gill | 33 | daughter | Operator | Massachusetts |
| 23 | John J Guald | 60 | Head | Electrician | Ohio |
| 24 | Grace Guald | 55 | wife | — | Massachusetts |
| 25 | Joseph A D Ouellette | 40 | Head | Stereotyper | Massachusetts |
| 26 | Elsie E Ouellette | 37 | Wife | — | Maine |
| 27 | Martin Laffin | 63 | Head | Shipper | Ireland |
| 28 | Mary A Laffin | 41 | wife | — | Northern Ireland |
| 29 | Eileen Laffin | 13 | daughter | — | Massachusetts |
| 30 | John Gordon | 43 | Lodger | Fireman | Massachusetts |
| 31 | George E Sirois | 42 | Head | Manager | New Hampshire |
| 32 | Mildred A Sirois | 44 | wife | — | Maine |
| 33 | Ruth E Sirois | 19 | daughter | — | Massachusetts |
| 34 | George E Sirois | 18 | son | — | Massachusetts |
| 35 | Evel L Sirois | 13 | daughter | — | Massachusetts |
| 36 | Thomas W Gray | 43 | Head | Clerk | England |
| 37 | Hattie V Gray | 40 | Wife | — | Massachusetts |
| 38 | Olive F Gray | 20 | daughter | — | Massachusetts |
| 39 | Robert W Gray | 13 | son | — | Massachusetts |
Related Census Records
Pedigree Summary
Helen
Gen 1 · 5 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)