RM
Robert May — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Belmont-County, Ohio
Our Model Tree links this Robert May across the 1930 and 1940 US Censuses in Belmont-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Belmont-County, Ohio |
| Surname | May |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Belmont |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Smith |
| Est. Birth Year | ~1927 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Charles May | Son | — | 35 | ~1905 |
| Lloyd May | Son | — | 20 | ~1920 |
| Robert May | Son | — | 13 | ~1927 |
| John May | Head | — | 63 | ~1877 |
| Charles May | Son | — | 16 | ~1924 |
| Dinadinah May | Spouse | — | 56 | ~1884 |
| George May | Son | — | 18 | ~1922 |
| Clarence May | Son | — | 33 | ~1907 |
| Edith May | Daughter | — | 22 | ~1918 |
Census Appearances
1930
Belmont, Ohio
Son, age 4
Belmont, Ohio · implied b. ~1926 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | West Virginia |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Belmont-County, Ohio
Son, age 13
Belmont-County, Ohio · implied b. ~1927 — 9 household members
| Surname | May |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Belmont |
| Highest Grade | No 4 |
| 1935 Residence | Ohio |
| 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 13 · b. ~1927 · Ohio
★ You are viewing this record
Sibling
George May
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edith May
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarence May
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles May
Sibling · 1940 · age 35
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lloyd May
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles May
Sibling · 1940 · age 16
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 — Belmont-County, Ohio
Open full size
1940 US Federal Census — Belmont-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03030-00444)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Tompkins Williams | 26 | Head | Laborer | Pennsylvania |
| 42 | Bertha Williams | 23 | Wife | — | Ohio |
| 43 | Lulu Williams | 3 | Daughter | — | Ohio |
| 44 | Henry Ermine Gretzky|Gretzkey | 57 | Head | Piler | Ohio |
| 45 | Oscar Ross | 42 | Head | Farmer | Ohio |
| 46 | Bertha Ross | 45 | Wife | — | Ohio |
| 47 | Lois Stevens | 12 | Daughter | — | Ohio |
| 48 | George Russell | 61 | Head | Farmer | Ohio |
| 49 | John May | 63 | Head | Farmer | West Virginia |
| 50 | Dina|Dinah May | 56 | Wife | — | West Virginia |
| 51 | Charles May | 35 | Son | Farmer | West Virginia |
| 52 | Clarence May | 33 | Son | Farmer | West Virginia |
| 53 | Edith May | 22 | Daughter | — | Ohio |
| 54 | Lloyd May | 20 | Son | — | Ohio |
| 55 | George May | 18 | Son | — | Ohio |
| 56 | Charles May | 16 | Son | — | Ohio |
| 57 | Robert May THIS PERSON | 13 | Son | — | Ohio |
| 58 | Earl Smith | 29 | Head | Miner | Ohio |
| 59 | Mae Smith | 32 | Wife | — | Ohio |
| 60 | William Baumberger | 78 | Father-in-law | — | Ohio |
| 61 | Lizzie Baumberger | 75 | Mother-in-law | — | Ohio |
| 62 | William Brown | 69 | Head | Farmer | Ohio |
| 63 | Mary Brown | 53 | Wife | — | Ohio |
| 64 | Ralph Brown | 29 | Son | Farmer | Ohio |
| 65 | Florence Black | 26 | Daughter | Junior Clerk | Ohio |
| 66 | Hubert Black | 7 | Grandson | — | Ohio |
| 67 | Mary Black | 5 | Granddaughter | — | Ohio |
| 68 | John Randall | 84 | Head | Farmer | Ohio |
| 69 | Maggie Lucas | 68 | Sister-in-law | — | Ohio |
| 70 | Bert Jones | 63 | Head | Farmer | Ohio |
| 71 | Maggie Jones | 62 | Wife | — | Missouri |
| 72 | Leah Jones | 23 | Daughter | Seamstress | Missouri |
| 73 | Albert Jones | 18 | Son | Farmer | Missouri |
| 74 | Robert Jones | 15 | Son | — | Missouri |
| 75 | Earnest Roy | 31 | Head | Farmer | West Virginia |
| 76 | Ethel Roy | 31 | Wife | — | Pennsylvania |
| 77 | Carol Roy | 6 | Son | — | Ohio |
| 78 | Nancy Roy | 4 | Daughter | — | Ohio |
| 79 | William Buchannon | 67 | Helper | — | West Virginia |
| 80 | Stanton Pearson | 68 | Head | Farmer | Ohio |
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)