CJ
Clarence Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mckean-County, Pennsylvania
Our Model Tree links this Clarence Johnson across the 1910, 1920, 1930 and 1940 US Censuses in Mckean-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Frank & Theodore — first a head (b.~1905), then head of a 3-person household.
Age 35
b. ~1905
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mckean-County, Pennsylvania |
| Surname | Johnson |
| Given Name | Clarence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Kane borough |
| 1935 Residence (County) | McKean |
| Additional Details | |
| Occupation | Driller |
| Industry | Oil fields |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 454 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Driller |
| Township / Ward | Kane Borough |
| Est. Birth Year | ~1905 |
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 Clarence | Age | Birth yr |
|---|---|---|---|---|
| Mildred Johnson | Daughter | — | 18 | ~1922 |
| Clarence Johnson | Head | — | 35 | ~1905 |
| Anna Johnson | Spouse | — | 38 | ~1902 |
Census Appearances
1910
Mckean, Pennsylvania
Son, age 4
Mckean, Pennsylvania · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Speaks English | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Mckean, Pennsylvania
Son, age 13
Mckean, Pennsylvania · implied b. ~1907 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Mckean, Pennsylvania
Son, age 24
Mckean, Pennsylvania · implied b. ~1906 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Clarence T |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Tool Dresser |
| Industry | Oil Field |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Mckean-County, Pennsylvania
Head, age 35
Mckean-County, Pennsylvania · implied b. ~1905 — 3 household members
| Surname | Johnson |
| Given Name | Clarence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Kane borough |
| 1935 Residence (County) | McKean |
| Occupation | Driller |
| Industry | Oil fields |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 454 |
| Highest Grade | Hs 1 |
| 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 Clarence Johnson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Johnson (~0.92 confidence) and father Theodore Johnson (~0.92 confidence) and mother Anna Johnson (~0.92 confidence) and mother Anna Johnson (~0.92 confidence) and mother Emily Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Johnson
b. ~1864
Source father
● Household
· direct · ~0.92
Father
Theodore Johnson
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Anna Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Anna Johnson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Emily Johnson
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Clarence Johnson
Head · 1940 · age 35 · b. ~1905 · 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 — Mckean-County, Pennsylvania
Open full size
1940 US Federal Census — Mckean-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03569-00099)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marcella Reverline | 34 | Daughter | — | Pennsylvania |
| 2 | James Reverline | 32 | Son | Laborer | Pennsylvania |
| 3 | Genevieve Reverline | 30 | Daughter | Reg Nurse | Pennsylvania |
| 4 | Albert Ross | 25 | Head | Laborer | Pennsylvania |
| 5 | Frances Ross | 22 | Wife | Seamstress | Pennsylvania |
| 6 | Adeline Ross | 1 | Daughter | — | Pennsylvania |
| 7 | Maud Cournean | 53 | Head | — | Pennsylvania |
| 8 | John Cournean | 18 | Son | — | Pennsylvania |
| 9 | Paul Jacquet | 49 | Head | Cook | Pennsylvania |
| 10 | William Jacquet | 18 | Son | — | Pennsylvania |
| 11 | Carl A Nelson | 64 | Head | Laborer | Sweden |
| 12 | Annie Nelson | 52 | Wife | Presser | Sweden |
| 13 | John Campbell | 39 | Head | Cutter | Pennsylvania |
| 14 | Edward Campbell | 39 | Brother | — | Pennsylvania |
| 15 | Theodore Johnson | 25 | Head | Clerk | Sweden |
| 16 | Anna Johnson | 54 | Wife | — | Sweden |
| 17 | Edward Johnson | 26 | Son | Laborer | Pennsylvania |
| 18 | William Johnson | 24 | Son | Office Clerk | Pennsylvania |
| 19 | Marion Johnson | 16 | Daughter | — | Pennsylvania |
| 20 | Mary Eckborg | 73 | Head | — | Sweden |
| 21 | Nancy Weirack | 40 | Roomer | Registered Nurse | Pennsylvania |
| 22 | Clarence Johnson THIS PERSON | 35 | Head | Driller | Pennsylvania |
| 23 | Anna Johnson | 38 | Wife | Reg. Nurse | Pennsylvania |
| 24 | Mildred Johnson | 18 | Daughter | — | Pennsylvania |
| 25 | John Udovich | 57 | Head | Carpenter | Italy |
| 26 | Frances Udovich | 49 | Wife | — | Italy |
| 27 | Frances Udovich | 25 | Daughter | Laborer | Pennsylvania |
| 28 | Edward Udovich | 22 | Son | Laborer | Pennsylvania |
| 29 | Ivan Udovich | 19 | Son | Cutter | Pennsylvania |
| 30 | Robert Udovich | 12 | Son | — | Pennsylvania |
| 31 | John L Rose | 58 | Head | Crossing Watchman | Pennsylvania |
| 32 | Mary Rose | 53 | Wife | — | Pennsylvania |
| 33 | Arthur Rose | 25 | Son | Laborer | Pennsylvania |
| 34 | Mary C Rose | 19 | Daughter | Seamstress | Pennsylvania |
| 35 | James Rose | 16 | Son | — | Pennsylvania |
| 36 | Richard Rose | 15 | Son | — | Pennsylvania |
| 37 | Anna Rose | 12 | Daughter | — | Pennsylvania |
| 38 | Joyce Rose | 10 | Daughter | — | Pennsylvania |
| 39 | Harry S Mckendree | 55 | Head | Stone Cutter | Pennsylvania |
| 40 | Grace Mckendree | 50 | Wife | — | Pennsylvania |
Pedigree Summary
Clarence
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)