HC
Harry Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Harry Clark across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1862), then head of a 5-person household.
Age 78
b. ~1862
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Clark |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 78 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | physician |
| Industry | own business |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 2000 |
| Highest Grade | C 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Physician |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1862 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Armene Clark | Daughter | — | 32 | ~1908 |
| Reid Clark | Daughter | — | 27 | ~1913 |
| Harriett Clark | Daughter | — | 38 | ~1902 |
| Harry Clark | Head | — | 78 | ~1862 |
| Margaret Clark | Spouse | — | 68 | ~1872 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 58
Allegheny, Pennsylvania · implied b. ~1862 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Harry E. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Doctor |
| Industry | Allopathic |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Head, age 68
Allegheny, Pennsylvania · implied b. ~1862
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Clark |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | Pennsylvania |
| Occupation | Clerk |
| Industry | County |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 10000 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 78
Allegheny-County, Pennsylvania · implied b. ~1862 — 5 household members
| Surname | Clark |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 78 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | physician |
| Industry | own business |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 2000 |
| Highest Grade | C 8 |
| 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 Harry Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Harry Clark
Head · 1940 · age 78 · b. ~1862 · Pennsylvania
★ 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 — 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-t0627-03670-00148)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles Henthorne | 59 | Head | Salesman | Pennsylvania |
| 42 | Charlotte Henthorne | 55 | Wife | — | Pennsylvania |
| 43 | C. Earl Sakeum | 44 | Head | Foreman | Pennsylvania |
| 44 | Izabella Sakeum | 38 | Wife | — | Pennsylvania |
| 45 | Dolores Sakeum | 15 | Daughter | — | Pennsylvania |
| 46 | Ruth Sakeum | 14 | Daughter | — | Pennsylvania |
| 47 | Mark Sakeum | 13 | Son | — | Pennsylvania |
| 48 | Earl Sakeum | 11 | Son | — | Pennsylvania |
| 49 | Izabella Sakeum | 9 | Daughter | — | Pennsylvania |
| 50 | Nancy Sakeum | 7 | Daughter | — | Pennsylvania |
| 51 | Susan Sakeum | 5 | Daughter | — | Pennsylvania |
| 52 | Mary E. Sakeum | 2 | Daughter | — | Pennsylvania |
| 53 | Harry Kenny | 53 | Head | Painter | Pennsylvania |
| 54 | Alice Kenny | 50 | Wife | — | Pennsylvania |
| 55 | Harry Jr. Kenny | 27 | Son | Laborer | Pennsylvania |
| 56 | Rose Marie Kenny | 23 | Daughter | Junior Clerk | Pennsylvania |
| 57 | Louise Kenny | 21 | Daughter | Laborer | Pennsylvania |
| 58 | Howard S. Schaum | 74 | Head | Inspector | Pennsylvania |
| 59 | Mary E. Schaum | 72 | Wife | — | Pennsylvania |
| 60 | Clement Alexander | 27 | Head | Salesman | Pennsylvania |
| 61 | Theresa Alexander | 27 | Wife | — | Pennsylvania |
| 62 | Howard Speer | 73 | Head | Funeral Director | Pennsylvania |
| 63 | Mary Speer | 62 | Wife | — | Pennsylvania |
| 64 | Beane Marcella Speer | 33 | Daughter | — | Pennsylvania |
| 65 | Howard Jr. Speer | 8 | Son | — | Pennsylvania |
| 66 | Thomas Elizabeth Speer | 64 | Sister in law | — | Pennsylvania |
| 67 | Harry Clark THIS PERSON | 78 | Head | Physician | Pennsylvania |
| 68 | Margaret Clark | 68 | Wife | — | Pennsylvania |
| 69 | Harriett Clark | 38 | Daughter | School Teacher | Pennsylvania |
| 70 | Armene Clark | 32 | Daughter | Operator | Pennsylvania |
| 71 | Reid Clark | 27 | Daughter | — | Pennsylvania |
| 72 | Arthur Davis | 57 | Head | Salesman | Pennsylvania |
| 73 | Mary Davis | 58 | Wife | — | New York |
| 74 | Ella H. Davis | 82 | Mother | — | Michigan |
| 75 | Emma Roth | 39 | Head | — | Maryland |
| 76 | J. E. Honecheck | 32 | Head | Salesmanager | Pennsylvania |
| 77 | Helen Honecheck | 25 | Wife | — | Pennsylvania |
| 78 | D. F. Shields | 25 | Head | Vice President | Pennsylvania |
| 79 | Margaret Shields | 23 | Wife | — | Pennsylvania |
| 80 | J. F. Mccarthy | 24 | Head | Branch Manager | Pennsylvania |
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)