RM
Robert May — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Summit-County, Ohio
Our Model Tree links this Robert May across the 1930 and 1940 US Censuses in Summit-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 10-person household.
Age 23
b. ~1917
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Summit-County, Ohio |
| Surname | May |
| Given Name | Robert D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield Twp |
| Additional Details | |
| Occupation | Accountant |
| Industry | Rubber Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | C 4 |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Accountant |
| Township / Ward | Springfield Twp |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Dean May | Head | — | 51 | ~1889 |
| Florence May | Daughter | — | 20 | ~1920 |
| Robert May | Son | — | 23 | ~1917 |
| Michael May | Son | — | 4 | ~1936 |
| Dorothy May | Spouse | — | 34 | ~1906 |
| James May | Son | — | 10 | ~1930 |
| Joan May | Daughter | — | 7 | ~1933 |
| Joseph May | Son | — | 3 | ~1937 |
| Donald May | Son | — | 5 | ~1935 |
| Dean May | Son | — | 8 | ~1932 |
Census Appearances
1930
Summit, Ohio
Son, age 14
Summit, Ohio · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Summit-County, Ohio
Son, age 23
Summit-County, Ohio · implied b. ~1917 — 10 household members
| Surname | May |
| Given Name | Robert D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield Twp |
| Occupation | Accountant |
| Industry | Rubber Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | C 4 |
| 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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert May
Son · 1940 · age 23 · b. ~1917 · Ohio
★ You are viewing this record
Sibling
James May
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael May
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald May
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph May
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dean May
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan May
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence May
Sibling · 1940 · age 20
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 — Summit-County, Ohio
Open full size
1940 US Federal Census — Summit-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03154-00633)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marcella Mcmillen | 27 | Wife | Bookkeeper | Ohio |
| 42 | Henry E. Mckenzie | 40 | Head | Proprietor | Maryland |
| 43 | Idella L. Mckenzie | 34 | Wife | — | Ohio |
| 44 | Richard E. Mckenzie | 13 | Son | — | Ohio |
| 45 | Marilyn A. Mckenzie | 5 | Daughter | — | Ohio |
| 46 | Sherwood Ingram | 44 | Head | Dept Manager | Pennsylvania |
| 47 | Jane Ingram | 43 | Wife | — | West Virginia |
| 48 | Eliza Lou Slaughter | 63 | Mother-in-law | — | North Carolina |
| 49 | Sarah Jane Slaughter | 38 | Sister-in-law | — | West Virginia |
| 50 | Vernon R. Hilbish | 40 | Head | Clerical Office | Ohio |
| 51 | Lillian E. Hilbish | 38 | Wife | — | Ohio |
| 52 | Jean Marie Hilbish | 15 | Daughter | — | Ohio |
| 53 | Louis H. Poole | 65 | Head | Machinist | Ohio |
| 54 | Elizabeth L. Poole | 63 | Wife | — | Ohio |
| 55 | Paul R. Schriber | 37 | Head | Machinist | Germany |
| 56 | Margot Schriber | 30 | Wife | — | Germany |
| 57 | Joseph A. Mcmillen | 44 | Head | Engineer | West Virginia |
| 58 | Eva L. Mcmillen | 39 | Wife | — | Massachusetts |
| 59 | Calvin L. Wilson | 46 | Head | Credit Mgr. | Ohio |
| 60 | Ruth M. Wilson | 46 | Wife | — | Ohio |
| 61 | Louise Wilson | 16 | Daughter | — | Ohio |
| 62 | Marilyn Wilson | 12 | Daughter | — | Ohio |
| 63 | Irwin F. Stipe | 59 | Head | Proprietor | Ohio |
| 64 | Maude A. Stipe | 56 | Wife | — | Ohio |
| 65 | Dean F. May | 51 | Head | Judge | Ohio |
| 66 | Dorothy L. May | 34 | Wife | — | Ohio |
| 67 | Robert D. May THIS PERSON | 23 | Son | Accountant | Ohio |
| 68 | Florence May | 20 | Daughter | — | Ohio |
| 69 | James C. May | 10 | Son | — | Ohio |
| 70 | Dean F. Jr. May | 8 | Son | — | Ohio |
| 71 | Joan Marie May | 7 | Daughter | — | Ohio |
| 72 | Donald May | 5 | Son | — | Ohio |
| 73 | Michael May | 4 | Son | — | Ohio |
| 74 | Joseph May | 3 | Son | — | Ohio |
| 75 | Forest E. Downing | 49 | Head | Proprietor | Ohio |
| 76 | C. Freda Downing | 51 | Wife | Bookkeeper | Ohio |
| 77 | John G. Dill | 33 | Head | Manager | Illinois |
| 78 | Alberta Dill | 31 | Wife | — | Pennsylvania |
| 79 | John Jr. Dill | 8 | Son | — | Ohio |
| 80 | William E. Lewis | 47 | Head | Superintendent | Pennsylvania |
Related Census Records
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)