LC
Lois Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hampden-County, Massachusetts
Our Model Tree links this Lois Clark across the 1930 and 1940 US Censuses in Hampden-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 | Hampden-County, Massachusetts |
| Surname | Clark |
| Given Name | Lois A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | West Springfield |
| 1935 Residence (County) | Hampden |
| Additional Details | |
| Highest Grade | G 5 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | West Springfield |
| 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 Lois | Age | Birth yr |
|---|---|---|---|---|
| Priscilla Clark | Daughter | — | 18 | ~1922 |
| Lena Clark | Spouse | — | 50 | ~1890 |
| Miriam Clark | Daughter | — | 16 | ~1924 |
| Robert Clark | Son | — | 20 | ~1920 |
| Walter Clark | Head | — | 47 | ~1893 |
| Lois Clark | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Hampden, Massachusetts
Daughter, age 1
Hampden, Massachusetts · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Lois A. |
| 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
Hampden-County, Massachusetts
Daughter, age 11
Hampden-County, Massachusetts · implied b. ~1929 — 6 household members
| Surname | Clark |
| Given Name | Lois A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | West Springfield |
| 1935 Residence (County) | Hampden |
| Highest Grade | G 5 |
| 1935 Residence | Same house |
| 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 Lois Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lois Clark
Daughter · 1940 · age 11 · b. ~1929 · Massachusetts
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Sibling
Miriam Clark
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Priscilla Clark
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Clark
Sibling · 1940 · age 20
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 — Hampden-County, Massachusetts
Open full size
1940 US Federal Census — Hampden-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01598-00797)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George A. Borden | 30 | Head | Outside Salesman | Ohio |
| 2 | Dorothy M. Borden | 29 | Wife | — | Ohio |
| 3 | Patricia A. Borden | 8 | Daughter | — | Ohio |
| 4 | Marilyn L. Borden | 6 | Daughter | — | Ohio |
| 5 | George A. Jr. Borden | 5 | Son | — | New York |
| 6 | Allen W. Borden | 36 | Head | Office Manager | New York |
| 7 | Sybil M. Borden | 31 | Wife | — | South Wales |
| 8 | Joseph L. Olmie | Olmic | 27 | Head | Office Manager | New York |
| 9 | Elsie T. Olmie | Olmic | 29 | Wife | — | New York |
| 10 | Donald L. Olmie | Olmic | 12 | Son | — | Massachusetts |
| 11 | Melville M. Allen | 60 | Head | Locomotive Engineer | Massachusetts |
| 12 | Hazel M. Allen | 36 | Wife | — | Canada Eng |
| 13 | Melville M. Jr. Allen | 21 | Son | Waiter | Massachusetts |
| 14 | Ada M. Allen | 7 | Daughter | — | Massachusetts |
| 15 | John W. Allen | 4 | Son | — | Massachusetts |
| 16 | Jean E. Allen | 2 | Daughter | — | Massachusetts |
| 17 | Walter H. Clark | 47 | Head | Locomotive Engineer | Massachusetts |
| 18 | Lena R. Clark | 50 | Wife | — | Massachusetts |
| 19 | Robert H. Clark | 20 | Son | Office Clerk | Massachusetts |
| 20 | Priscilla J. Clark | 18 | Daughter | New Worker | Massachusetts |
| 21 | Miriam C. Clark | 16 | Daughter | — | Massachusetts |
| 22 | Lois A. Clark THIS PERSON | 11 | Daughter | — | Massachusetts |
| 23 | Marie E. Avery | 73 | Head | — | Connecticut |
| 24 | Ralph W. Crosier | 46 | Son in law | Mail Carrier | Massachusetts |
| 25 | Bertha E. Crosier | 41 | Daughter | — | Connecticut |
| 26 | Rheta M. Crosier | 12 | Daughter | — | Massachusetts |
| 27 | Joseph Cimaroli | 50 | Head | Machine Tender | Italy |
| 28 | Mary C. Cimaroli | 49 | Wife | — | Connecticut |
| 29 | Vincent H. Cimaroli | 22 | Son | Broke Man | Massachusetts |
| 30 | Daniel J. Sheen | 69 | Head | — | Massachusetts |
| 31 | Edward V. Girotti | 28 | Head | Route Foreman | Massachusetts |
| 32 | Mary C. Girotti | 27 | Wife | Bristol | Massachusetts |
| 33 | William J. Girotti | 3 | Son | — | Massachusetts |
| 34 | William C. Girotti | 25 | Brother | Stock Clerk | Massachusetts |
| 35 | John Maffei | 46 | Head | Electrotyper | Massachusetts |
| 36 | Agnes D. Maffei | 45 | Wife | — | Connecticut |
| 37 | Donald J. Maffei | 10 | Son | — | Massachusetts |
| 38 | Marion L. Mcclelland | 68 | Mother in law | — | Scotland |
| 39 | Raymond Sparrow | 41 | Lodger | Commercial Photographer | Massachusetts |
| 40 | Ronald Sparrow | 11 | Lodger's 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)