RA
Robert Alexander — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert Alexander across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 14-person household.
Age 13
b. ~1927
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Alexander |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | 6 |
| 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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Rita Alexander | Daughter | — | 14 | ~1926 |
| Rita Newell | Daughter | — | 9 | ~1931 |
| Mary Alexander | Daughter | — | 9 | ~1931 |
| Jean Alexander | Daughter | — | 2 | ~1938 |
| Alice Alexander | Daughter | — | 11 | ~1929 |
| Charles Alexander | Head | — | 53 | ~1887 |
| Martin Newell | Other | — | 34 | ~1906 |
| Marty Newell | Son | — | 7 | ~1933 |
| Charles Alexander | Son | — | 31 | ~1909 |
| William Alexander | Son | — | 16 | ~1924 |
| Robert Alexander | Son | — | 13 | ~1927 |
| Gertrude Alexander | Spouse | — | 28 | ~1912 |
| Catherine Alexander | Spouse | — | 50 | ~1890 |
| Ellen Newell | Spouse | — | 30 | ~1910 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 2
Allegheny, Pennsylvania · implied b. ~1928 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | North Carolina |
| 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 — 14 household members
| Surname | Alexander |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | 6 |
| 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 Alexander across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Alexander
Son · 1940 · age 13 · b. ~1927 · Pennsylvania
★ You are viewing this record
Sibling
Mary Alexander
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Alexander
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marty Newell
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Alexander
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Newell
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Alexander
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Alexander
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Alexander
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 — 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-t0627-03672-00445)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Thomas | 46 | Head | Mate | Pennsylvania |
| 42 | Marion Thomas | 33 | Wife | — | Maryland |
| 43 | Phillip Thomas | 13 | Son | — | Pennsylvania |
| 44 | Margaret Charmley | 33 | Head | Proprietor | Pennsylvania |
| 45 | Edward Snyder | 60 | Lodger | Ambulance | Pennsylvania |
| 46 | George Henderson | 35 | Lodger | Truck Driver | Pennsylvania |
| 47 | Betty Wallace | 29 | Lodger | Maid | Pennsylvania |
| 48 | Edith Lobaugh | 41 | Head | Maid | Maryland |
| 49 | John T. Skelton | 58 | Head | Fire Man | Pennsylvania |
| 50 | Margaret R. Skelton | 54 | Wife | — | Pennsylvania |
| 51 | John W. Skelton | 33 | Son | Plumber | Pennsylvania |
| 52 | Furen James | 34 | Lodger | File Clerk | Pennsylvania |
| 53 | Ernie Scholes | 62 | Lodger | — | Pennsylvania |
| 54 | John Jones | 32 | Lodger | Laborer | Pennsylvania |
| 55 | Robert Irwin | 28 | Lodger | Laborer | Pennsylvania |
| 56 | Charles Alexander | 53 | Head | Elevator | Pennsylvania |
| 57 | Catherine Alexander | 50 | Wife | — | Pennsylvania |
| 58 | Charles Jr. Alexander | 31 | Son | Highway Plan | Pennsylvania |
| 59 | Gertrude Alexander | 28 | Wife | — | Pennsylvania |
| 60 | Jean Alexander | 2 | Daughter | — | Pennsylvania |
| 61 | Martin Newell | 34 | Inlaw | Bartender | Pennsylvania |
| 62 | Ellen Newell | 30 | Wife | — | Pennsylvania |
| 63 | Rita Newell | 9 | Daughter | — | Pennsylvania |
| 64 | Marty Newell | 7 | Son | — | Pennsylvania |
| 65 | William Alexander | 16 | Son | — | Pennsylvania |
| 66 | Rita Alexander | 14 | Daughter | — | Pennsylvania |
| 67 | Robert Alexander THIS PERSON | 13 | Son | — | Pennsylvania |
| 68 | Alice Alexander | 11 | Daughter | — | Pennsylvania |
| 69 | Mary Alexander | 9 | Daughter | — | Pennsylvania |
| 70 | Mrs. Edward Crossley | 65 | Head | — | Ohio |
| 71 | Frank Henry | 63 | Head | — | Italy |
| 72 | Lucy Henry | 59 | Wife | — | Italy |
| 73 | Lucy Henry | 32 | Daughter | Book Keeper | Pennsylvania |
| 74 | Christina Henry | 22 | Daughter | Maid | Pennsylvania |
| 75 | Dominick Perry | 57 | Head | Labour | Italy |
| 76 | Catherine Perry | 50 | Wife | — | West Virginia |
| 77 | Frank Perry | 33 | Son | Laborer | Pennsylvania |
| 78 | George Clardy | 63 | Head | — | Georgia |
| 79 | Georgia Clardy | 57 | Wife | — | Alabama |
| 80 | Ida Matthew | 57 | Head | — | 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)