AC
Agnes Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Agnes Clark across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 8-person household.
Age 61
b. ~1879
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Clark |
| Given Name | Agnes M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1879 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Agnes | Age | Birth yr |
|---|---|---|---|---|
| Edward Clark | Son | — | 36 | ~1904 |
| Esther Clark | Daughter | — | 33 | ~1907 |
| William Clark | Daughter | — | 40 | ~1900 |
| John Clark | Head | — | 74 | ~1866 |
| Sarah Clark | Daughter | — | 38 | ~1902 |
| Agnes Clark | Daughter | — | 32 | ~1908 |
| Agnes Clark | Spouse | — | 61 | ~1879 |
| James Clark | Son | — | 21 | ~1919 |
Census Appearances
1930
Allegheny, Pennsylvania
Other, age 50
Allegheny, Pennsylvania · implied b. ~1880 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Agnes M |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 19 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Spouse, age 61
Allegheny-County, Pennsylvania · implied b. ~1879 — 8 household members
| Surname | Clark |
| Given Name | Agnes M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Agnes Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Agnes Clark
Spouse · 1940 · age 61 · b. ~1879 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03663-00053)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Virginia Stefan | 14 | Daughter | — | Pennsylvania |
| 42 | Bertha Williams | 70 | Mother-in-law | — | Pennsylvania |
| 43 | Thomas G. Maxwell | 53 | Head | Foreman | Scotland |
| 44 | Blanche B. Maxwell | 52 | Wife | — | Pennsylvania |
| 45 | John Clark | 74 | Head | Proprietor | Ohio |
| 46 | Agnes M. Clark THIS PERSON | 61 | Wife | — | Pennsylvania |
| 47 | William D. Clark | 40 | Daughter | Saleswoman | Pennsylvania |
| 48 | Sarah F. Clark | 38 | Daughter | — | Pennsylvania |
| 49 | Edward Clark | 36 | Son | Wire Clerk | Pennsylvania |
| 50 | Esther Clark | 33 | Daughter | Saleswoman | Pennsylvania |
| 51 | Agnes W. Clark | 32 | Daughter | Typist | Pennsylvania |
| 52 | James W. Clark | 21 | Son | Apprentice Machinist | Pennsylvania |
| 53 | Duncan A. Bruce | 42 | Head | Accountant | Pennsylvania |
| 54 | Florence S. Bruce | 33 | Wife | — | Pennsylvania |
| 55 | Duncan A. Bruce | 8 | Son | — | Pennsylvania |
| 56 | Roger A. Bruce | 4 | Son | — | Pennsylvania |
| 57 | James C. Bruce | 3 | Son | — | Pennsylvania |
| 58 | Christine M. Bruce | 2 | Daughter | — | Pennsylvania |
| 59 | Virginia Williams | 40 | Head | Music Teacher | Pennsylvania |
| 60 | Wallace E. Brown | 65 | Brother | Contractor | Pennsylvania |
| 61 | Ann Peternell | 20 | Friend | Maid | Pennsylvania |
| 62 | Edward J. Coppersmith | 39 | Head | Mechanical Engineer | Pennsylvania |
| 63 | Helen Coppersmith | 38 | Wife | — | Pennsylvania |
| 64 | Curtis Shimell | 59 | Head | Salesman | Virginia |
| 65 | Daisy Shimell | 68 | Wife | — | Maryland |
| 66 | Thomas Trimmer | 43 | Head | Salesman | Pennsylvania |
| 67 | Gertrude Trimmer | 40 | Wife | — | Pennsylvania |
| 68 | Thomas Jr. Trimmer | 11 | Son | — | Pennsylvania |
| 69 | Joan Trimmer | 3 | Daughter | — | Pennsylvania |
| 70 | Hattie Johnson | 50 | Maid | Maid | West Virginia |
| 71 | Lyman G. Riley | 56 | Head | Electrical Engineer | Ohio |
| 72 | Frances D. Riley | 50 | Wife | — | Washington |
| 73 | Edward Hodgdon | 55 | Head | State Agent | Pennsylvania |
| 74 | Pauline E. Hodgdon | 49 | Wife | — | Pennsylvania |
| 75 | George E. Hodgdon | 22 | Son | Adjustor | Pennsylvania |
| 76 | Barbara Hodgdon | 19 | Daughter | — | Pennsylvania |
| 77 | Raymond Van Tyne | 30 | Lodger | Agent | Pennsylvania |
| 78 | Evelyn | 8 | Block | — | Pennsylvania |
| 79 | Frank D. Kirkpatrick | 54 | Head | Free Lance Publicity | Pennsylvania |
| 80 | Jean Kirkpatrick | 54 | Wife | Copy-Writer | New York |
Related Census Records
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)