HC
Harold Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Montgomery-County, Pennsylvania
Our Model Tree links this Harold Clark across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Rebecca & Rebecca — first a son (b.~1912), then head of a 5-person household.
Age 28
b. ~1912
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Pennsylvania |
| Surname | Clark |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | LIMERICK |
| 1935 Residence (County) | MONTGOMERY |
| Additional Details | |
| Occupation | Attendant |
| Industry | Game Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1000 |
| Highest Grade | No H1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Attendant |
| Township / Ward | Limerick |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Frank Clark | Head | — | 53 | ~1887 |
| Rebecca Clark | Spouse | — | 58 | ~1882 |
| Myrtle Wells | Other | — | 21 | ~1919 |
| Harold Clark | Son | — | 28 | ~1912 |
| Kenneth Clark | Son | — | 17 | ~1923 |
Census Appearances
1920
Montgomery, Pennsylvania
Son, age 8
Montgomery, Pennsylvania · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Montgomery, Pennsylvania
Son, age 18
Montgomery, Pennsylvania · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Harold J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Montgomery-County, Pennsylvania
Son, age 28
Montgomery-County, Pennsylvania · implied b. ~1912 — 5 household members
| Surname | Clark |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | LIMERICK |
| 1935 Residence (County) | MONTGOMERY |
| Occupation | Attendant |
| Industry | Game Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1000 |
| Highest Grade | No H1 |
| 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 Harold Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Rebecca Clark (~0.92 confidence) and mother Rebecca Clark (~0.92 confidence) and father Frank Clark (~0.92 confidence) and father Frank Clark (~0.92 confidence) and father Frank Clark (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Rebecca Clark
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Rebecca Clark
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
Frank Clark
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Frank Clark
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Frank Clark
b. ~1890
Source father
● Household
· direct · ~0.92
This person
Anchor record
Harold Clark
Son · 1940 · age 28 · b. ~1912 · Pennsylvania
★ You are viewing this record
Sibling
Kenneth Clark
Sibling · 1940 · age 17
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 — Montgomery-County, Pennsylvania
Open full size
1940 US Federal Census — Montgomery-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03579-00548)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose Mary Schars | 2 | — | — | Pennsylvania |
| 42 | Leroy Miller | 38 | Head | Labor | Pennsylvania |
| 43 | Iva Miller | 35 | Wife | — | Pennsylvania |
| 44 | Joyce Miller | 12 | Daughter | — | Pennsylvania |
| 45 | Janice Miller | 7 | Daughter | — | Pennsylvania |
| 46 | Hannah Schlicter | 78 | Boarder | — | Pennsylvania |
| 47 | Vincent Wisnieski | 48 | Head | Meat Cutter | Poland |
| 48 | Mary Wisnieski | 49 | Wife | — | Germany |
| 49 | Francis Winnies | 24 | Son | Salesman | Pennsylvania |
| 50 | Edmond Winnies | 20 | Son | Farmer | Pennsylvania |
| 51 | Vincent Jr. Winnies | 19 | Son | — | Pennsylvania |
| 52 | Christopher Kutra | 66 | Head | Farmer | Lithuania |
| 53 | Amelia Kutra | 55 | Wife | — | Lithuania |
| 54 | George Kutra | 31 | Son | Farmer | Pennsylvania |
| 55 | Amelia Kutra | 29 | Daughter | — | Pennsylvania |
| 56 | Matilda Kutra | 27 | Daughter | Secretary | Pennsylvania |
| 57 | Joseph Saylor | 35 | Head | Teacher | Pennsylvania |
| 58 | Vinnie Saylor | 62 | Mother | — | Pennsylvania |
| 59 | Justice W. Martin | 55 | Head | Innkeeper | Pennsylvania |
| 60 | Florence Martin | 51 | Wife | — | Pennsylvania |
| 61 | Sara Sunday | 20 | Maid | — | Pennsylvania |
| 62 | Benjamin Anastasia | 25 | Head | Truck Driver | Pennsylvania |
| 63 | Gladys Anastasia | 21 | Wife | — | Pennsylvania |
| 64 | Joseph Nealon | 62 | Head | Labor | Ireland |
| 65 | Elizabeth Nealon | 54 | Sister | Inspector | Ireland |
| 66 | George Metka | 38 | Head | Farmer | Pennsylvania |
| 67 | Kathryn Metka | 42 | Wife | — | Pennsylvania |
| 68 | George R. Metka | 5 | Son | — | Pennsylvania |
| 69 | Robert Metka | 3 | Son | — | Pennsylvania |
| 70 | Patricia Metka | 2 | Daughter | — | Pennsylvania |
| 71 | Howard Rasmussen | 18 | Boarder | Farmer | Pennsylvania |
| 72 | John Somers | 58 | Head | Farmer | Pennsylvania |
| 73 | Mary Somers | 58 | Wife | — | Pennsylvania |
| 74 | Frank Clark | 53 | Head | Attendant | Pennsylvania |
| 75 | Rebecca Clark | 58 | Wife | — | Pennsylvania |
| 76 | Harold Clark THIS PERSON | 28 | Son | Attendant | Pennsylvania |
| 77 | Kenneth Clark | 17 | Son | — | Pennsylvania |
| 78 | Myrtle Wells | 21 | Boarder | Presser | Pennsylvania |
| 79 | William Kulp | 32 | Head | Carpenter | Pennsylvania |
| 80 | Mary Kulp | 31 | Wife | — | Pennsylvania |
Pedigree Summary
Harold + 1 sibling
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)