GJ
Gordon Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mchenry-County, Illinois
Our Model Tree links this Gordon Johnson across the 1930 and 1940 US Censuses in Mchenry-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mchenry-County, Illinois |
| Surname | Johnson |
| Given Name | Gordon A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Hebron Twp |
| 1935 Residence (County) | McHenry |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Hebron Twp |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Gordon | Age | Birth yr |
|---|---|---|---|---|
| Marshall Johnson | Son | — | 16 | ~1924 |
| Roger Johnson | Son | — | 4 | ~1936 |
| Isabelle Johnson | Daughter | — | 9 | ~1931 |
| Wayne Johnson | Son | — | 1 | ~1939 |
| Gordon Johnson | Son | — | 11 | ~1929 |
| Berton Johnson | Head | — | 41 | ~1899 |
| Noris Johnson | Son | — | 5 | ~1935 |
| Howard Johnson | Son | — | 7 | ~1933 |
| Donald Johnson | Son | — | 13 | ~1927 |
| Ester Johnson | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Mchenry, Illinois
Son, age 1
Mchenry, Illinois · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Gordon |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Sweden |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Mchenry-County, Illinois
Son, age 11
Mchenry-County, Illinois · implied b. ~1929 — 10 household members
| Surname | Johnson |
| Given Name | Gordon A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Hebron Twp |
| 1935 Residence (County) | McHenry |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Gordon Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Gordon Johnson
Son · 1940 · age 11 · b. ~1929 · Illinois
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Sibling
Roger Johnson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Noris Johnson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Johnson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabelle Johnson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marshall Johnson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Johnson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Johnson
Sibling · 1940 · age 1
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 — Mchenry-County, Illinois
Open full size
1940 US Federal Census — Mchenry-County, Illinois
Page Contents
15 people indexed on this census page (nara:1940:m-t0627-00840-00805)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Josephine Peterson | 42 | Head | — | Illinois |
| 42 | Berton Johnson | 41 | Head | Farmer | Illinois |
| 43 | Ester C. Johnson | 41 | Wife | — | Sweden |
| 44 | Marshall B. Johnson | 16 | Son | — | Illinois |
| 45 | Donald B. Johnson | 13 | Son | — | Illinois |
| 46 | Gordon A. Johnson THIS PERSON | 11 | Son | — | Wisconsin |
| 47 | Isabelle D. Johnson | 9 | Daughter | — | Illinois |
| 48 | Howard L. Johnson | 7 | Son | — | Illinois |
| 49 | Noris A. Johnson | 5 | Son | — | Illinois |
| 50 | Roger D. Johnson | 4 | Son | — | Illinois |
| 51 | Wayne R. Johnson | 1 | Son | — | Illinois |
| 52 | James Mathison | 74 | Head | — | Illinois |
| 53 | Evelen Mathison | 57 | Wife | — | Illinois |
| 54 | Arthur Echt | 52 | Lodger | — | Illinois |
| 55 | David R. Young | 0 | Son | — | Illinois |
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)