WM
William May — 1930 US Census Record
Model Tree available1930 United States Federal Census · Mchenry, Illinois
Our Model Tree links this William May across the 1910, 1920 and 1930 US Censuses in Mchenry, Illinois (XGBoost, ~Confirmed), with identified parents Peter & Anna — first a head (b.~1900), then head of a 3-person household.
Age 30
b. ~1900
Male
Head
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Mchenry, Illinois |
| Surname | May |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Feed Grinder |
| Industry | Own Business |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Feed Grinder |
| Township / Ward | Mchenry Township |
| Est. Birth Year | ~1900 |
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 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William May | Head | — | 30 | ~1900 |
| Richard May | Son | — | 1 | ~1929 |
| Hilda May | Spouse | — | 27 | ~1903 |
Census Appearances
1910
Mchenry, Illinois
Son, age 10
Mchenry, Illinois · implied b. ~1900 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Ger-Ger |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Mchenry, Illinois
Son, age 20
Mchenry, Illinois · implied b. ~1900 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Mchenry, Illinois
Head, age 30
Mchenry, Illinois · implied b. ~1900 — 3 household members
| Surname | May |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Feed Grinder |
| Industry | Own Business |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | No |
| 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 3 US Census years (1910, 1920 and 1930) in Mchenry, Illinois, using XGBoost record linkage. Identified parents: father Peter May (~0.92 confidence) and mother Anna May (~0.92 confidence) and mother Anna May (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter May
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Anna May
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Anna May
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William May
Head · 1930 · age 30 · b. ~1900 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Mchenry, Illinois
Open full size
1930 US Federal Census — Mchenry, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel537:0053)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John P. Schaefer | 53 | Head | Farmer | Illinois |
| 2 | Anna Schaefer | 51 | Wife | — | Illinois |
| 3 | Anita Schaefer | 16 | Daughter | — | New York |
| 4 | Alice Steffen | 29 | Cousin | Cook | Germany |
| 5 | Adam Bildner | 50 | Head | Baker | Austria |
| 6 | Elizabeth Bildner | 46 | Wife | — | Austria |
| 7 | Jacob Hemming | 65 | Head | — | Illinois |
| 8 | Barbara Hemming | 60 | Wife | — | Illinois |
| 9 | Math J. Miller | 67 | Head | — | Illinois |
| 10 | Mildred Miller | 41 | Daughter | Servant | Illinois |
| 11 | William Effling | None | Head | — | Illinois |
| 12 | Wife Effling | None | Wife | — | Illinois |
| 13 | Alfred Effling | None | Son | — | Illinois |
| 14 | Peter Niesen | 65 | Head | Farmer | Illinois |
| 15 | Augusta Niesen | 58 | Wife | — | Germany |
| 16 | Jacob Schumacher | 63 | Head | — | Illinois |
| 17 | Rose Schumacher | 62 | Wife | — | Illinois |
| 18 | Alvina Schumacher | 23 | Daughter | — | Illinois |
| 19 | Bernard Kennebeck | 34 | Head | Farmer | Illinois |
| 20 | Dorothy Kennebeck | 30 | Wife | — | Illinois |
| 21 | Edna Kennebeck | 11 | Daughter | — | Illinois |
| 22 | Daniel Kennebeck | 9 | Son | — | Illinois |
| 23 | Loraine Kennebeck | 7 | Daughter | — | Illinois |
| 24 | Janet Kennebeck | 6 | Daughter | — | Illinois |
| 25 | Raymond Kennebeck | 5 | Son | — | Illinois |
| 26 | Bernard Jr. Kennebeck | 4 | Son | — | Illinois |
| 27 | Floyd Kennebeck | 3 | Son | — | Illinois |
| 28 | Jos. J. Schaefer | 56 | Head | Farmer | Germany |
| 29 | Laura Schaefer | 47 | Wife | — | Illinois |
| 30 | Stephen Schaefer | 22 | Son | — | Illinois |
| 31 | Mildred Schaefer | 18 | Son | — | Illinois |
| 32 | Catherine Schaefer | 16 | Daughter | — | Illinois |
| 33 | Mary Freund | 69 | Mother-in-law | — | Illinois |
| 34 | Catherine May | 75 | Head | — | Illinois |
| 35 | Alfred May | 21 | Grand Son | Farmer | Illinois |
| 36 | Frank May | 20 | Grand Son | Farmer | Illinois |
| 37 | Henry May | 19 | Grand Son | Farmer | Illinois |
| 38 | Gertrude May | 17 | Grand Daughter | — | Illinois |
| 39 | Jos. J. Freund | 51 | Head | Farmer | Illinois |
| 40 | Catherine Freund | 49 | Wife | — | Illinois |
| 41 | Anna Brugger | 72 | Mother-in-law | — | Illinois |
| 42 | William May THIS PERSON | 30 | Head | Feed Grinder | Illinois |
| 43 | Hilda May | 27 | Wife | — | Illinois |
| 44 | Richard Jr. May | 1 | Son | — | Illinois |
| 45 | Herbert Michels | 73 | Head | — | Illinois |
| 46 | Catherine Michels | 66 | Wife | — | Illinois |
| 47 | Frances Michels | 27 | Daughter | — | Illinois |
| 48 | Beatrice Michels | 17 | Daughter | — | Wisconsin |
| 49 | Mathias Jungen | 66 | Head | Farmer | Germany |
| 50 | Catherine Jungen | 67 | Wife | — | Germany |
Pedigree Summary
William
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 1930 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)