RM
Robert May — 1940 US Census Record
Model Tree available1940 United States Federal Census · Miami-County, Ohio
Our Model Tree links this Robert May across the 1920, 1930 and 1940 US Censuses in Miami-County, Ohio (XGBoost, ~Confirmed), with identified parents Albert & P — first a son (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Miami-County, Ohio |
| Surname | May |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Piqua |
| 1935 Residence (County) | Miami |
| Additional Details | |
| Occupation | Office Clerk |
| Industry | Wholesale Blanket Co |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 266 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Office Clerk |
| Township / Ward | Piqua |
| Est. Birth Year | ~1916 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert May | Son | — | 24 | ~1916 |
| P May | Head | — | 54 | ~1886 |
| Helen May | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Miami, Ohio
Son, age 3
Miami, Ohio · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Michigan |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Miami, Ohio
Son, age 13
Miami, Ohio · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | Robert B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Miami-County, Ohio
Son, age 24
Miami-County, Ohio · implied b. ~1916 — 3 household members
| Surname | May |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Piqua |
| 1935 Residence (County) | Miami |
| Occupation | Office Clerk |
| Industry | Wholesale Blanket Co |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 266 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Robert May across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert May (~0.92 confidence) and father P May (~0.92 confidence) and mother Helen May (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert May
b. ~1886
Source father
● Household
· direct · ~0.92
Father
P May
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Helen May
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert May
Son · 1940 · age 24 · b. ~1916 · Ohio
★ 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 — Miami-County, Ohio
Open full size
1940 US Federal Census — Miami-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03116-00322)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Edgar Whitlock | 76 | Head | Secretary | Ohio |
| 2 | Clara Whitlock | 74 | Wife | — | Ohio |
| 3 | Frances Whitlock | 39 | Daughter | — | Ohio |
| 4 | Leroy Nager | 60 | Head | Sec. Treasurer | Ohio |
| 5 | Sallie Nager | 63 | Wife | — | Ohio |
| 6 | P. Albert May | 54 | Head | Traveling Salesman | Ohio |
| 7 | Helen May | 50 | Wife | — | Michigan |
| 8 | Robert May THIS PERSON | 24 | Son | Office Clerk | Ohio |
| 9 | Jay Will | 60 | Head | Mechanical Engineer | Indiana |
| 10 | Marie Will | 50 | Wife | — | Indiana |
| 11 | Richard Will | 16 | Son | — | Michigan |
| 12 | Charles Sauers | 56 | Head | Scrap Iron Dealer | Ohio |
| 13 | Anna Sauers | 53 | Wife | — | Pennsylvania |
| 14 | Mary Sauers | 19 | Daughter | Inspector | Ohio |
| 15 | Charles W. Sauers | 17 | Son | Helper | Ohio |
| 16 | Gertrude Gassert | 54 | Lodger | Saleswoman | Pennsylvania |
| 17 | John L. Reymiller | 45 | Head | Proprietor Electricity | Ohio |
| 18 | Pauline Reymiller | 46 | Wife | — | Maine |
| 19 | John T. Reymiller | 16 | Son | — | Ohio |
| 20 | Hannah Reymiller | 14 | Daughter | — | Ohio |
| 21 | William Reymiller | 13 | Son | — | Ohio |
| 22 | Isabel Towle | 72 | Mother-in-law | — | Massachusetts |
| 23 | Florence Lynch | 49 | Head | — | Ohio |
| 24 | Bertha Henry | 22 | Lodger | Sewing Machine Operator | Ohio |
| 25 | Ruby Kley | 29 | Lodger | Settle Worker | Ohio |
| 26 | Mary Kley | 30 | Lodger | Settle Worker | Ohio |
| 27 | George Petrie | 66 | Head | Secretary | Ohio |
| 28 | Amelia Petrie | 60 | Wife | — | Ohio |
| 29 | Betty Petrie | 20 | Daughter | Private Secretary | Michigan |
| 30 | Edward Brandt | 61 | Head | Janitor | Ohio |
| 31 | Florence Brandt | 53 | Wife | — | Ohio |
| 32 | James Griffith | 42 | Lodger | Shipping Clerk | Ohio |
| 33 | Clarence Glass | 39 | Head | Knitter | Ohio |
| 34 | Fern Glass | 35 | Wife | Winder | Ohio |
| 35 | Louis C. Neth | 64 | Head | Owner | Ohio |
| 36 | Mary C. Neth | 61 | Wife | — | Ohio |
| 37 | Marie B. Mckinney | 41 | Head | Exec. Secretary | Ohio |
| 38 | Benjamin W. Pool | 31 | Head | Vice-President | Ohio |
| 39 | Minnie Pool | 31 | Wife | — | Ohio |
| 40 | Susanne Pool | 3 | Daughter | — | Ohio |
Pedigree Summary
Robert
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)