FJ
Frederick Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Frederick Johnson across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 4-person household.
Age 70
b. ~1870
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Johnson |
| Given Name | Frederick |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Carpenter Contractor |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 308 |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Carpenter |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1870 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frederick | Age | Birth yr |
|---|---|---|---|---|
| Frederick Johnson | Head | — | 70 | ~1870 |
| George Johnson | Son | — | 42 | ~1898 |
| Jane Johnson | Spouse | — | 68 | ~1872 |
| John Johnson | Son | — | 40 | ~1900 |
Census Appearances
1920
Philadelphia, Pennsylvania
Head, age 50
Philadelphia, Pennsylvania · implied b. ~1870 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1887 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Carpenter |
| Industry | Brewery |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | England |
| Year of Naturalization | 1892 |
| Birthplace (normalized) | england |
1930
Philadelphia, Pennsylvania
Head, age 61
Philadelphia, Pennsylvania · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1888 |
| Age at First Marriage | 47 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Proprietor |
| Industry | Dye Works |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 12000 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Philadelphia-County, Pennsylvania
Head, age 70
Philadelphia-County, Pennsylvania · implied b. ~1870 — 4 household members
| Surname | Johnson |
| Given Name | Frederick |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Occupation | Carpenter |
| Industry | Carpenter Contractor |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 308 |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Frederick Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Frederick Johnson
Head · 1940 · age 70 · b. ~1870 · 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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03715-00557)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lucy Boland | 15 | Daughter | — | Pennsylvania |
| 2 | Margaret Boland | 14 | Daughter | — | Pennsylvania |
| 3 | Anna Boland | 13 | Daughter | — | Pennsylvania |
| 4 | Louise Campbell | 47 | Head | — | Pennsylvania |
| 5 | Anna Campbell | 24 | Daughter | Hosiery Mender | Pennsylvania |
| 6 | Ruth Campbell | 22 | Daughter | Hosiery Mender | Pennsylvania |
| 7 | James Campbell | 18 | Son | — | Pennsylvania |
| 8 | Dorothy Campbell | 16 | Daughter | New Worker | Pennsylvania |
| 9 | Charles Bergdoll | 47 | Head | Foreman | Pennsylvania |
| 10 | Kathryn Bergdoll | 47 | Wife | — | Pennsylvania |
| 11 | Kathryn Jr. Bergdoll | 22 | Daughter | Accounting Clerk | Pennsylvania |
| 12 | William Bergdoll | 20 | Son | Accounting Clerk | Pennsylvania |
| 13 | Charles Jr. Bergdoll | 6 | Son | — | Pennsylvania |
| 14 | Charles Gelnack | 33 | Head | Baker | Hungary |
| 15 | Dorothy Gelnack | 29 | Wife | — | Pennsylvania |
| 16 | Dorothy Jr. Gelnack | 5 | Daughter | — | Pennsylvania |
| 17 | Carole Gelnack | 1 | Daughter | — | Pennsylvania |
| 18 | Kenneth Knox | 25 | Boarder | Roller Maker | Pennsylvania |
| 19 | Anna Knox | 22 | Boarder | — | Pennsylvania |
| 20 | William Knox | 4 | Boarder's son | — | Pennsylvania |
| 21 | Frederick Johnson THIS PERSON | 70 | Head | Carpenter | England |
| 22 | Jane Johnson | 68 | Wife | — | Northern Ireland |
| 23 | George Johnson | 42 | Son | Cashier | Pennsylvania |
| 24 | John Johnson | 40 | Son | Bartender | Pennsylvania |
| 25 | John Agger | 40 | Head | Laborer | Pennsylvania |
| 26 | Anna Agger | 37 | Wife | — | Pennsylvania |
| 27 | John Agger | 12 | Son | — | Pennsylvania |
| 28 | Martin Agger | 9 | Son | — | Pennsylvania |
| 29 | James Agger | 1 | Son | — | Pennsylvania |
| 30 | Joseph Agger | 21 | Stepson | Stock Clerk | Pennsylvania |
| 31 | Anna Agger | 19 | Stepdaughter | New Worker | Pennsylvania |
| 32 | Alfred Horn | 51 | Head | Maintenance Man | Germany |
| 33 | Frances Horn | 44 | Wife | — | Pennsylvania |
| 34 | Amelia Horn | 20 | Daughter | Stenographer | Pennsylvania |
| 35 | Ethel Horn | 18 | Daughter | — | Pennsylvania |
| 36 | Elizabeth Horn | 16 | Daughter | — | Pennsylvania |
| 37 | Rita Horn | 14 | Daughter | — | Pennsylvania |
| 38 | Frances Horn | 11 | Daughter | — | Pennsylvania |
| 39 | Constance Horn | 8 | Daughter | — | Pennsylvania |
| 40 | Joseph Horn | 4 | Son | — | 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)