RM
Robert Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert Mason across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Mason |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Hattie Mason | Daughter | — | 10 | ~1930 |
| Grace Mason | Daughter | — | 5 | ~1935 |
| Annie Mason | Daughter | — | 12 | ~1928 |
| Florence Mason | Daughter | — | 7 | ~1933 |
| Betty Mason | Daughter | — | 2 | ~1938 |
| Ned Mason | Head | — | 36 | ~1904 |
| John Mason | Son | — | ~1940 | |
| Fred Mason | Son | — | 4 | ~1936 |
| Lawrence Mason | Son | — | 8 | ~1932 |
| Robert Mason | Son | — | 13 | ~1927 |
| Ebbie Mason | Spouse | — | 32 | ~1908 |
Census Appearances
1930
Allegheny, Pennsylvania
Other, age 2
Allegheny, Pennsylvania · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Robert A. |
| Relationship to Head | Gd. Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 13
Allegheny-County, Pennsylvania · implied b. ~1927 — 11 household members
| Surname | Mason |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 8 |
| 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 Mason across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Mason
Son · 1940 · age 13 · b. ~1927 · Pennsylvania
★ You are viewing this record
Sibling
Grace Mason
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Mason
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hattie Mason
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Mason
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Mason
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Mason
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mason
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annie Mason
Sibling · 1940 · age 12
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 — 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-t0627-03661-00190)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Samuel Gazzo | 20 | Son | New Worker | Pennsylvania |
| 42 | Clara Gazzo | 17 | Daughter | New Worker | Pennsylvania |
| 43 | Antonette Gazzo | 13 | Daughter | — | Pennsylvania |
| 44 | Josephine Gazzo | 9 | Daughter | — | Pennsylvania |
| 45 | Benjamin Gazzo | 41 | Head | Watch Man | Italy |
| 46 | Antinette Gazzo | 35 | Wife | — | Pennsylvania |
| 47 | Nicholas Gazzo | 15 | Son | — | Pennsylvania |
| 48 | Clara Gazzo | 12 | Daughter | — | Pennsylvania |
| 49 | Silvestro Spremacola | 77 | Father-in-law | — | Italy |
| 50 | Antonette Spremacola | 74 | Mother-in-law | — | Italy |
| 51 | Tony Manzato | 53 | Head | Machine-Operator | Italy |
| 52 | Mary Manzato | 58 | Wife | — | Italy |
| 53 | Micheal Deleonardo | 39 | Head | Machine-Operator | Italy |
| 54 | Antonette Deleonardo | 37 | Wife | — | Italy |
| 55 | Mary Deleonardo | 15 | Daughter | — | Pennsylvania |
| 56 | Angeline Deleonardo | 14 | Daughter | — | Pennsylvania |
| 57 | Helen Deleonardo | 13 | Daughter | — | Pennsylvania |
| 58 | Jane Deleonardo | 7 | Daughter | — | Pennsylvania |
| 59 | Eva Deleonardo | 5 | Daughter | — | Pennsylvania |
| 60 | Mary Ceribola | 62 | Mother | — | Italy |
| 61 | Louis Gonzebus | 45 | Lodger | Laborer | Italy |
| 62 | Ned Mason | 36 | Head | Laborer | N. Carolina |
| 63 | Ebbie Mason | 32 | Wife | — | S. Carolina |
| 64 | Robert Mason THIS PERSON | 13 | Son | — | Pennsylvania |
| 65 | Annie Mae Mason | 12 | Daughter | — | Pennsylvania |
| 66 | Hattie Mason | 10 | Daughter | — | Pennsylvania |
| 67 | Lawrence Mason | 8 | Son | — | Pennsylvania |
| 68 | Florence Mason | 7 | Daughter | — | Pennsylvania |
| 69 | Grace Mason | 5 | Daughter | — | Pennsylvania |
| 70 | Fred Mason | 4 | Son | — | Pennsylvania |
| 71 | Betty Mason | 2 | Daughter | — | Pennsylvania |
| 72 | John Mason | 0 | Son | — | Pennsylvania |
| 73 | Clifford Abbon | 42 | Head | Cook | Pennsylvania |
| 74 | Olivia Abbon | 42 | Wife | — | Pennsylvania |
| 75 | Joseph Zalvo | 41 | Head | Janitor | Italy |
| 76 | Pasqualina Zalvo | 45 | Wife | — | Italy |
| 77 | Louis Zalvo | 18 | Son | — | Italy |
| 78 | Rita Zalvo | 8 | Daughter | — | Pennsylvania |
| 79 | Frank Ricciardi | 43 | Head | Plaster | Italy |
| 80 | Clara Ricciardi | 26 | Wife | — | Pennsylvania |
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)