JK
John King — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mchenry-County, Illinois
Our Model Tree links this John King across the 1920, 1930 and 1940 US Censuses in Mchenry-County, Illinois (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a head (b.~1883), then head of a 3-person household.
Age 57
b. ~1883
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mchenry-County, Illinois |
| Surname | King |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Harvard City |
| 1935 Residence (County) | McHenry |
| Additional Details | |
| Occupation | H |
| Industry | H |
| Class of Worker | No |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | H |
| Township / Ward | Harvard City |
| Est. Birth Year | ~1883 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Katherine King | Daughter | — | 22 | ~1918 |
| Marion King | Daughter | — | 27 | ~1913 |
| John King | Head | — | 57 | ~1883 |
Census Appearances
1920
Mchenry, Illinois
Son, age 35
Mchenry, Illinois · implied b. ~1885 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | New York |
| Occupation | Horse dealer |
| Industry | Stable |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Mchenry, Illinois
Son, age 45
Mchenry, Illinois · implied b. ~1885 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Free State Ireland |
| Mother's Birthplace | New York |
| Occupation | Horse Buyer |
| Industry | Horse Market |
| Class of Worker | O |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mchenry-County, Illinois
Head, age 57
Mchenry-County, Illinois · implied b. ~1883 — 3 household members
| Surname | King |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Harvard City |
| 1935 Residence (County) | McHenry |
| Occupation | H |
| Industry | H |
| Class of Worker | No |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 John King across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas King (~0.92 confidence) and father Thomas King (~0.92 confidence) and mother Maria King (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas King
b. ~1849
Source father
● Household
· direct · ~0.92
Father
Thomas King
b. ~1850
Source father
● Household
· direct · ~0.92
Mother
Maria King
b. ~1852
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John King
Head · 1940 · age 57 · b. ~1883 · Illinois
★ 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 — Mchenry-County, Illinois
Open full size
1940 US Federal Census — Mchenry-County, Illinois
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00840-00325)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward G. Booth | 45 | Head | U | Wisconsin |
| 2 | Lillian H. Booth | 40 | Wife | H | Illinois |
| 3 | Barbara J. Booth | 14 | Daughter | — | Illinois |
| 4 | Clarence J. Burdage | 57 | Head | Construction Helper | Illinois |
| 5 | Marie J. Burdage | 41 | Wife | H | Illinois |
| 6 | Chas. J. Jr. Burdage | 12 | Son | — | Illinois |
| 7 | Frances P. Burdage | 11 | Daughter | — | Illinois |
| 8 | Edward J. Burdage | 10 | Son | — | Illinois |
| 9 | Mary A. Burdage | 8 | Daughter | — | Illinois |
| 10 | Robert V. Burdage | 7 | Son | — | Illinois |
| 11 | Loretta J. Burdage | 6 | Daughter | — | Illinois |
| 12 | Dorothy E. Burdage | 5 | Daughter | — | Illinois |
| 13 | Katherine Burdage | 4 | Daughter | — | Illinois |
| 14 | Irene F. Burdage | 1 | Daughter | — | Illinois |
| 15 | Margaret Burdage | 0 | Daughter | — | Illinois |
| 17 | John S. King THIS PERSON | 57 | Head | H | Illinois |
| 18 | Marion E. King | 27 | Daughter | Office Clerk | Illinois |
| 19 | Katherine A. King | 22 | Daughter | Stenographer | Illinois |
| 20 | Bert Van Antwerpt | 49 | Head | Locomotive Engineer | Nebraska |
| 21 | Lillian Van Antwerpt | 48 | Wife | School Teacher | Illinois |
| 22 | Mary J. Van Antwerpt | 21 | Daughter | County School Teacher | Illinois |
| 23 | James H. Huebner | 66 | Head | Farmer | Pennsylvania |
| 24 | Jane M. Huebner | 47 | Wife | H | England |
| 25 | Jean A. Huebner | 13 | Daughter | — | Illinois |
| 26 | John R. Huebner | 6 | Son | — | Illinois |
| 27 | Alton D. Wood | 25 | Head | Farmer | Illinois |
| 28 | Janet R. Wood | 19 | Wife | Yardman | Illinois |
| 29 | Diane R. Wood | 0 | Daughter | — | Illinois |
| 30 | Chas. H. Neiman | 62 | Head | Wire Chief | Germany |
| 31 | Louise Neiman | 57 | Wife | H | Michigan |
| 32 | Chas. F. Neiman | 25 | Son | Painter | Illinois |
| 33 | Mabel F. Neiman | 21 | Daughter | H | Illinois |
| 34 | James William Neiman | 2 | Grandson | — | Illinois |
| 36 | Mary J. White | 57 | Head | Forewoman | Illinois |
| 37 | Mary H. White | 48 | Wife | H | Indiana |
| 38 | Mary H. White | 17 | Daughter | — | Wisconsin |
| 39 | Fred C. Kennedy | 28 | Head | Agent | Illinois |
| 40 | Bernice M. Kennedy | 25 | Wife | H | Illinois |
Related Census Records
Pedigree Summary
John
Gen 1 · 3 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)