JH
John Hubbard — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, Illinois
Our Model Tree links this John Hubbard across the 1930 and 1940 US Censuses in Mercer-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Illinois |
| Surname | Hubbard |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Sherrard Village |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Industry | 75 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Sherrard Village |
| Est. Birth Year | ~1923 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Russell Hubbard | Son | — | 14 | ~1926 |
| Lyle Hubbard | Son | — | 12 | ~1928 |
| Catherine Hubbard | Daughter | — | 9 | ~1931 |
| Chester Hubbard | Head | — | 49 | ~1891 |
| Mary Hubbard | Spouse | — | 48 | ~1892 |
| Arthur Hubbard | Son | — | 19 | ~1921 |
| John Hubbard | Son | — | 17 | ~1923 |
| William Hubbard | Son | — | 22 | ~1918 |
Census Appearances
1930
Mercer, Illinois
Son, age 7
Mercer, Illinois · implied b. ~1923 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hubbard |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Mercer-County, Illinois
Son, age 17
Mercer-County, Illinois · implied b. ~1923 — 8 household members
| Surname | Hubbard |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Sherrard Village |
| 1935 Residence (County) | Mercer |
| Industry | 75 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Hubbard across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hubbard
Son · 1940 · age 17 · b. ~1923 · Illinois
★ You are viewing this record
Sibling
Catherine Hubbard
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Hubbard
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lyle Hubbard
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Hubbard
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Russell Hubbard
Sibling · 1940 · age 14
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 — Mercer-County, Illinois
Open full size
1940 US Federal Census — Mercer-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00858-00479)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Palma Peterson | 46 | Wife | — | Illinois |
| 42 | Robert Peterson | 18 | Son | — | Illinois |
| 43 | Fred Stark | 48 | Head | Principal | Illinois |
| 44 | Leatha Stark | 45 | Wife | — | Illinois |
| 45 | Rosemary Stark | 9 | Daughter | — | Illinois |
| 46 | Dixie Lou Stark | 6 | Daughter | — | Illinois |
| 47 | Rudolph A. Mueller | 56 | Head | Postmaster | Iowa |
| 48 | Arab Mueller | 54 | Wife | — | Illinois |
| 49 | Lenore Mueller | 22 | Daughter | — | Illinois |
| 50 | Warren A. B. Mueller | 18 | Son | — | Illinois |
| 51 | Eliza Allely | 81 | Mother-in-law | — | Illinois |
| 52 | Merdith Woolley | 28 | Head | Partner | Illinois |
| 53 | Erma Woolley | 25 | Wife | — | Tennessee |
| 54 | Melvin Jean | 36 | Head | Molder | Indiana |
| 55 | Ada Jean | 37 | Wife | — | Washington |
| 56 | Beryl Jean | 16 | Son | — | Illinois |
| 57 | Darlene Jean | 15 | Daughter | — | Indiana |
| 58 | Melba Jean | 11 | Daughter | — | Illinois |
| 59 | Le Roy Anderson | 23 | Head | Molder | Illinois |
| 60 | Olivia Anderson | 22 | Wife | Proprietor | Illinois |
| 61 | Chester Hubbard | 49 | Head | Proprietor | Iowa |
| 62 | Mary Hubbard | 48 | Wife | — | Iowa |
| 63 | William Hubbard | 22 | Son | Truck Driver | Iowa |
| 64 | Arthur Hubbard | 19 | Son | Experimental Worker | Missouri |
| 65 | John Hubbard THIS PERSON | 17 | Son | — | Missouri |
| 66 | Russell Hubbard | 14 | Son | — | Iowa |
| 67 | Lyle Hubbard | 12 | Son | — | Illinois |
| 68 | Catherine Hubbard | 9 | Daughter | — | Illinois |
| 69 | Peter Connor | 64 | Head | Proprietor | Illinois |
| 70 | Peter Jr. A. B. Connor | 18 | Son | — | Illinois |
| 71 | Nellie Huggins | 74 | Head | — | Illinois |
| 72 | William Douglas | 34 | Head | Motor Tester | Illinois |
| 73 | Bertrice Douglas | 31 | Wife | — | Illinois |
| 74 | Amanda Nelson | 67 | Mother-in-law | — | Illinois |
| 75 | Hulda Anderson | 64 | Head | — | Illinois |
| 76 | Earl Anderson | 36 | Son | Miner | Illinois |
| 77 | Ralph Anderson | 34 | Son | Truck Driver | Illinois |
| 78 | C. Harry Douglas | 59 | Head | Rural Mail Carrier | Nebraska |
| 79 | Zella Douglas | 57 | Wife | — | Illinois |
| 80 | Raymond Douglas | 20 | Son | Printing Machine | 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)