GJ
Gerald Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Pennsylvania
Our Model Tree links this Gerald Johnson across the 1930 and 1940 US Censuses in Montgomery-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Pennsylvania |
| Surname | Johnson |
| Given Name | Gerald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Conshohocken Borough |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Conshohocken Borough |
| Est. Birth Year | ~1929 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Gerald | Age | Birth yr |
|---|---|---|---|---|
| Susan Johnson | Spouse | — | 49 | ~1891 |
| Kathleen Johnson | Daughter | — | 20 | ~1920 |
| Gerald Johnson | Son | — | 11 | ~1929 |
| Thomas Johnson | Head | — | 52 | ~1888 |
| Thomas Johnson | Son | — | 17 | ~1923 |
| Raymond Johnson | Son | — | 24 | ~1916 |
| Richard Johnson | Son | — | 14 | ~1926 |
| Joseph Johnson | Son | — | 20 | ~1920 |
| Margaret Johnson | Daughter | — | 20 | ~1920 |
Census Appearances
1930
Montgomery, Pennsylvania
Son, age 1
Montgomery, Pennsylvania · implied b. ~1929 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Gerald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Montgomery-County, Pennsylvania
Son, age 11
Montgomery-County, Pennsylvania · implied b. ~1929 — 9 household members
| Surname | Johnson |
| Given Name | Gerald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Conshohocken Borough |
| 1935 Residence (County) | Montgomery |
| 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 Gerald Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Gerald Johnson
Son · 1940 · age 11 · b. ~1929 · Pennsylvania
★ You are viewing this record
Sibling
Raymond Johnson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Johnson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Johnson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Johnson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Johnson
Sibling · 1940 · age 20
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-t0627-03578-00212)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Howard | 52 | Head | Carpenter | Pennsylvania |
| 2 | Mary Howard | 18 | Daughter | Apprentice | Pennsylvania |
| 3 | John Howard | 21 | Son | Laborer | Pennsylvania |
| 4 | Sarah Howard | 13 | Daughter | — | Pennsylvania |
| 5 | Sarah Andrew | 55 | Housekeeper | — | Pennsylvania |
| 6 | John Kniszner | 47 | Head | Operator | Pennsylvania |
| 7 | Mary Kniszner | 45 | Wife | — | Pennsylvania |
| 8 | Marion Burt | 7 | Lodger | — | Pennsylvania |
| 9 | Theresa Burt | 13 | Lodger | — | Pennsylvania |
| 10 | Paul Darlak | 33 | Head | Laborer | Pennsylvania |
| 11 | Emma Darlak | 35 | Wife | — | Pennsylvania |
| 12 | Emma C. Ricker | 15 | Daughter | — | Pennsylvania |
| 13 | Thomas Johnson | 52 | Head | — | Pennsylvania |
| 14 | Susan Johnson | 49 | Wife | — | Pennsylvania |
| 15 | Kathleen Johnson | 20 | Daughter | Sorter | Pennsylvania |
| 16 | Raymond Johnson | 24 | Son | Spinner | Pennsylvania |
| 17 | Margaret Johnson | 20 | Daughter | Sorter | Pennsylvania |
| 18 | Joseph Johnson | 20 | Son | Spinner | Pennsylvania |
| 19 | Thomas Johnson | 17 | Son | New Worker | Pennsylvania |
| 20 | Richard Johnson | 14 | Son | — | Pennsylvania |
| 21 | Gerald Johnson THIS PERSON | 11 | Son | — | Pennsylvania |
| 22 | John T. Johnson | 51 | Head | Roller | Pennsylvania |
| 23 | Alice Johnson | 44 | Wife | — | Pennsylvania |
| 24 | Marion Johnson | 15 | Daughter | — | Pennsylvania |
| 25 | Paul Johnson | 15 | Son | — | Pennsylvania |
| 26 | Helen Hammill | 23 | Daughter | — | Pennsylvania |
| 27 | Harry Hammill | 25 | Son-in-law | — | Pennsylvania |
| 28 | Joseph Harvey | 58 | Head | Laborer | Pennsylvania |
| 29 | Lillian Harvey | 60 | Wife | — | Pennsylvania |
| 30 | Frank Poyle | 60 | Head | Laborer | Pennsylvania |
| 31 | John C. Coyle | 37 | Head | Clerk | Pennsylvania |
| 32 | Jane Coyle | 29 | Wife | — | Pennsylvania |
| 33 | William J. Harvey | 42 | Head | Clerk | Pennsylvania |
| 34 | Anna Harvey | 36 | Wife | — | Pennsylvania |
| 35 | Dorothea Harvey | 17 | Daughter | — | Pennsylvania |
| 36 | Paul N. Wood | 43 | Head | Clerk | Ohio |
| 37 | Ellen P. Wood | 40 | Wife | — | Pennsylvania |
| 38 | James Wood | 15 | Son | — | Pennsylvania |
| 39 | George Munday | 43 | Head | Mechanic | Pennsylvania |
| 40 | Ellen Munday | 41 | Wife | Clerk | 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)