JB
James Bailey — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mchenry-County, Illinois
Our Model Tree links this James Bailey across the 1920, 1930 and 1940 US Censuses in Mchenry-County, Illinois (XGBoost, ~Confirmed), with identified parents Mary & Edward — first a son (b.~1917), then head of a 8-person household.
Age 23
b. ~1917
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mchenry-County, Illinois |
| Surname | Bailey |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Alden Township |
| 1935 Residence (County) | McHenry |
| Additional Details | |
| Occupation | Portable Grinder |
| Industry | PW |
| Class of Worker | 600 |
| Highest Grade | No 8 |
| 1935 Residence | 60 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Portable Grinder |
| Township / Ward | Alden Township |
| Est. Birth Year | ~1917 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Margaret Bailey | Daughter | — | 17 | ~1923 |
| Edward Bailey | Head | — | 62 | ~1878 |
| William Bailey | Son | — | 22 | ~1918 |
| Melvin Bailey | Son | — | 19 | ~1921 |
| James Bailey | Son | — | 23 | ~1917 |
| Edward Bailey | Son | — | 29 | ~1911 |
| Raymond Bailey | Son | — | 25 | ~1915 |
| Mary Bailey | Spouse | — | 63 | ~1877 |
Census Appearances
1920
Mchenry, Illinois
Son, age 4
Mchenry, Illinois · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baily |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Mchenry, Illinois
Son, age 14
Mchenry, Illinois · implied b. ~1916 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bailey |
| Given Name | James H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mchenry-County, Illinois
Son, age 23
Mchenry-County, Illinois · implied b. ~1917 — 8 household members
| Surname | Bailey |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Alden Township |
| 1935 Residence (County) | McHenry |
| Occupation | Portable Grinder |
| Industry | PW |
| Class of Worker | 600 |
| Highest Grade | No 8 |
| 1935 Residence | 60 |
| 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 James Bailey across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Bailey (~0.92 confidence) and father Edward Bailey (~0.92 confidence) and father Edward Baily (~0.92 confidence) and mother Mary Baily (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Bailey
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
Edward Bailey
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Edward Baily
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Mary Baily
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Bailey
Son · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Sibling
Margaret Bailey
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Bailey
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Bailey
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melvin Bailey
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Bailey
Sibling · 1940 · age 22
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
40 people indexed on this census page (nara:1940:m-t0627-00840-00016)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Vern Albright | 63 | Head | Farm | Penn |
| 42 | Mattie Albright | 55 | Wife | — | Wisconsin |
| 43 | Edward Bailey | 62 | Head | Farm | Wisconsin |
| 44 | Mary Bailey | 63 | Wife | — | Wisconsin |
| 45 | Edward Bailey | 29 | Son | Portable Grinder | Illinois |
| 46 | Raymond Bailey | 25 | Son | Farm | Illinois |
| 47 | James Bailey THIS PERSON | 23 | Son | Portable Grinder | Illinois |
| 48 | William Bailey | 22 | Son | Farm | Illinois |
| 49 | Melvin Bailey | 19 | Son | Farm | Illinois |
| 50 | Margaret Bailey | 17 | Daughter | — | Illinois |
| 51 | Howard Ash | 34 | Head | Farm | Arkansas |
| 52 | Helen Ash | 34 | Wife | — | Indiana |
| 53 | Dera Mae Ash | 9 | Daughter | — | Illinois |
| 54 | Dorothy Marie Ash | 6 | Daughter | — | Illinois |
| 55 | Evelyn Elaine Ash | 4 | Daughter | — | Illinois |
| 56 | Wilma Louise Ash | 2 | Daughter | — | Illinois |
| 57 | Anna Strict | 64 | Head | Farmer | Germany |
| 58 | Nick Strict | 37 | Son | Farm | Iowa |
| 59 | Cecelia Strict | 25 | Daughter | House | Illinois |
| 60 | Lawrence Hampton | 38 | Head | Farm | Kansas |
| 61 | Robert Hampton | 36 | Brother | Farm | Kansas |
| 62 | Conrad Smith | 32 | Head | Farm | Illinois |
| 63 | Bernice Smith | 29 | Wife | — | Illinois |
| 64 | Elwood Smith | 7 | Son | — | Illinois |
| 65 | Barbara Smith | 5 | Daughter | — | Illinois |
| 66 | Evelyn Smith | 4 | Daughter | — | Illinois |
| 67 | Irene Smith | 2 | Daughter | — | Illinois |
| 68 | David Booma | 41 | Hired Man | Farm Hand | Holland |
| 69 | Arthur Smith | 35 | Head | Farm | Wisconsin |
| 70 | Ruth A. Smith | 33 | Wife | — | Illinois |
| 71 | Dolores Smith | 10 | Daughter | — | Illinois |
| 72 | Marjorie Smith | 8 | Daughter | — | Illinois |
| 73 | Stanley Carney | 19 | Hired Man | Farm | Wisconsin |
| 74 | Wm. F. Hage | 53 | Head | Farm | Illinois |
| 75 | Laura Hage | 45 | Wife | — | Illinois |
| 76 | Kenneth Hage | 19 | Son | Farm | Illinois |
| 77 | Arthur Hage | 17 | Son | — | Illinois |
| 78 | Elaine Hage | 15 | Daughter | — | Illinois |
| 79 | Richard Hage | 8 | Son | — | Illinois |
| 80 | Walter Fink | 42 | Head | Farm | Illinois |
Related Census Records
Pedigree Summary
James + 5 siblings
Gen 1 · 4 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)