WM
William May — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Illinois
Our Model Tree links this William May across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Madison-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1858), then head of a 3-person household.
Age 82
b. ~1858
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Illinois |
| Surname | May |
| Given Name | William F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 82 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Marine Village |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Marine Village |
| Est. Birth Year | ~1858 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Emma May | Daughter | — | 51 | ~1889 |
| William May | Head | — | 82 | ~1858 |
| Flora May | Spouse | — | 73 | ~1867 |
Census Appearances
1900
Madison, Illinois
Head, age 43
Madison, Illinois · implied b. ~1857 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | William F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| Birth Month | Apr |
| Birth Year | 1857 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1910
Madison, Illinois
Head, age 53
Madison, Illinois · implied b. ~1857 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | William F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Illinois |
| Years Married | 27 |
| Father's Birthplace | Ger |
| Mother's Birthplace | Ger |
| Occupation | Farmer |
| Industry | General Farm |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Madison, Illinois
Head, age 62
Madison, Illinois · implied b. ~1858
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | May |
| Given Name | William |
| Relationship to Head | Head |
| Sex | O |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Year of Naturalization | F |
| Birthplace (normalized) | illinois |
1930
Madison, Illinois
Head, age 72
Madison, Illinois · implied b. ~1858 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Madison-County, Illinois
Head, age 82
Madison-County, Illinois · implied b. ~1858 — 3 household members
| Surname | May |
| Given Name | William F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 82 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Marine Village |
| 1935 Residence (County) | Madison |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 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 William May across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William May
Head · 1940 · age 82 · b. ~1858 · 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 — Madison-County, Illinois
Open full size
1940 US Federal Census — Madison-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00850-00811)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Catherine Wieduwilt | 51 | Wife | — | Illinois |
| 42 | Edwin V. Ems | 43 | Head | Laborer | Illinois |
| 43 | Marcus Q. Dale | 64 | Head | Laborer | Illinois |
| 44 | Louis G. Ems | 24 | Head | — | Illinois |
| 45 | Anna Bauer | 44 | Housekeeper | Housekeeper | Illinois |
| 46 | Louis H. Ahlemeyer | 36 | Head | Machinist | Illinois |
| 47 | Olinda Ahlemeyer | 36 | Wife | — | Illinois |
| 48 | Roland Ahlemeyer | 10 | Son | — | Illinois |
| 49 | Anna Lorr | 56 | Head | — | Illinois |
| 50 | John D. Lorr | 66 | Brother | — | Illinois |
| 51 | Henry F. Darber | 56 | Head | Carpenter | Illinois |
| 52 | Amanda Talleur | 54 | Sister | — | Illinois |
| 53 | George H. Pence | 42 | Head | Proprietor | Illinois |
| 54 | Albertine Pence | 42 | Wife | — | Illinois |
| 55 | Olin G. Pence | 18 | Son | Laborer | Illinois |
| 56 | Hannah Schaffer | 53 | Head | Laundress | Illinois |
| 57 | Lawrence Schaffer | 12 | Son | — | Illinois |
| 58 | Robert L. Holcombe | 40 | Head | Medical Doctor | Wisconsin |
| 59 | Lucille C. Holcombe | 34 | Wife | Receptionist | Missouri |
| 60 | Robert C. Holcombe | 11 | Son | — | Illinois |
| 61 | Bettie M. Holcombe | 10 | Daughter | — | Illinois |
| 62 | Vallelmuna Kraus | 72 | Head | — | Illinois |
| 63 | Albert G. Henze | 83 | Head | — | Illinois |
| 64 | Emilie Henze | 74 | Wife | — | Illinois |
| 65 | Donley A. Brooks | 74 | Head | Automobile Insurance Agent | Illinois |
| 66 | Hettie Brooks | 76 | Wife | — | Missouri |
| 67 | Oscar Pfeiffer | 44 | Head | Worker | Illinois |
| 68 | Ethel M. Pfeiffer | 41 | Wife | Worker | Missouri |
| 69 | Clyde O. Pfeiffer | 4 | Grandson | — | Illinois |
| 70 | William F. May THIS PERSON | 82 | Head | — | Illinois |
| 71 | Flora May | 73 | Wife | — | Illinois |
| 72 | Emma L. May | 51 | Daughter | Transcribing | Illinois |
| 73 | Henry W. Koch | 64 | Head | Salesman | Illinois |
| 74 | Ora S. Koch | 61 | Wife | — | Illinois |
| 75 | Edith Shepard | 71 | Sister-in-law | — | Illinois |
| 76 | Flora Neudecker | 49 | Head | Librarian | Illinois |
| 77 | Ralph Neudecker | 23 | Son | Shipping Clerk | Illinois |
| 78 | La Rue Neudecker | 16 | Son | — | Illinois |
| 79 | Robert Neudecker | 14 | Son | — | Illinois |
| 80 | Emma L. Schneid | 56 | Head | — | 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)