RM
Robert May — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert May across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Frank & Annie — first a son (b.~1918), then head of a 3-person household.
Age 22
b. ~1918
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | May |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Laborer |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 260 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Frank May | Head | — | 52 | ~1888 |
| Anna May | Spouse | — | 50 | ~1890 |
| Robert May | Son | — | 22 | ~1918 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 1
Allegheny, Pennsylvania · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Maryland |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 11
Allegheny, Pennsylvania · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | May |
| Given Name | Robert G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 22
Allegheny-County, Pennsylvania · implied b. ~1918 — 3 household members
| Surname | May |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Laborer |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 260 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Frank May (~0.92 confidence) and mother Annie May (~0.92 confidence) and father Frank May (~0.92 confidence) and mother Anna May (~0.92 confidence) and father Robert May (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank May
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Annie May
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
Frank May
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Anna May
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Robert May
b. ~1891
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert May
Son · 1940 · age 22 · b. ~1918 · Pennsylvania
★ 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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03660-00751)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cyril Krouse | 58 | Lodger | Cabinet Maker | Germany |
| 42 | Samuel H Putnam | 71 | Head | — | Ohio |
| 43 | Clara Louise Bryce | 36 | Daughter | — | Illinois |
| 44 | Clara Louise Bryce | 75 | Daughter | — | New York |
| 45 | Francisca Jadzewski | 53 | Housekeeper | Housekeeper | Germany |
| 46 | Rudolph Jadzewski | 4 | Housekeeper's Son | — | Pennsylvania |
| 47 | Charles Williams | 36 | Head | Salesman | Pennsylvania |
| 48 | Philonera Williams | 39 | Wife | — | Pennsylvania |
| 49 | Rosemary Williams | 10 | Daughter | — | Pennsylvania |
| 50 | Ralph Williams | 3 | Son | — | Pennsylvania |
| 51 | Remigius Mccartney | 29 | Head | Salesman | Pennsylvania |
| 52 | Mary Mccartney | 26 | Wife | — | Pennsylvania |
| 53 | Thomas Mccartney | 1 | Son | — | Pennsylvania |
| 54 | Alexander Watson | 51 | Head | Janitor | Pennsylvania |
| 55 | Albert Waughman | 31 | Head | Mechanic | Pennsylvania |
| 56 | Zella Waughman | 31 | Wife | Clerk | Pennsylvania |
| 57 | Albert Waughman | 13 | Son | — | Pennsylvania |
| 58 | Esther Crawford | 62 | Mother-in-law | — | England |
| 59 | Robert Warren | 22 | Head | Assistant Janitor | Pennsylvania |
| 60 | Virginia Warren | 21 | Wife | — | Pennsylvania |
| 61 | Fred Warren | 2 | Son | — | Pennsylvania |
| 62 | William Waughman | 36 | Brother | — | Pennsylvania |
| 63 | George Kirk | 29 | Head | Motorman | Pennsylvania |
| 64 | Comella Kirk | 27 | Wife | — | Pennsylvania |
| 65 | George Kirk | 6 | Son | — | Pennsylvania |
| 66 | Richard Kirk | 4 | Son | — | Pennsylvania |
| 67 | John Forster | 43 | Head | Mechanical Engineer | England |
| 68 | Pearl Forster | 42 | Wife | — | Pennsylvania |
| 69 | George W. Pringle | 36 | Head | Assistant Foreman | Pennsylvania |
| 70 | Charlotte Pringle | 35 | Wife | — | Pennsylvania |
| 71 | Frank May | 52 | Head | Laborer | Virginia |
| 72 | Anna May May | 50 | Wife | — | Maryland |
| 73 | Robert May THIS PERSON | 22 | Son | Laborer | Pennsylvania |
| 74 | Mae Conner | 46 | Head | — | Pennsylvania |
| 75 | Thomas Quinn | 51 | Lodger | Mechanic | Pennsylvania |
| 76 | Michael Flynn | 77 | Head | Storekeeper | Pennsylvania |
| 77 | Margaret Flynn | 77 | Wife | — | Ireland |
| 78 | Mary C. Girty | 49 | Daughter | Telephone Operator | Connecticut |
| 79 | Margaret O'Brien | 44 | Daughter | Maid | Connecticut |
| 80 | Lawrence O'Brien | 19 | Grand-son | New Worker | Pennsylvania |
Pedigree Summary
Robert
Gen 1 · 5 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)