RC
Robert Carroll — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert Carroll across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 10-person household.
Age 14
b. ~1926
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Carroll |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | PITTSBURGH |
| 1935 Residence (County) | ALLEGHENY |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1926 |
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 |
|---|---|---|---|---|
| Mary Carroll | Spouse | — | 33 | ~1907 |
| James Carroll | Son | — | 8 | ~1932 |
| Robert Carroll | Son | — | 14 | ~1926 |
| Raymond Carroll | Son | — | 2 | ~1938 |
| Walter Carroll | Head | — | 35 | ~1905 |
| Francis Carroll | Son | — | 4 | ~1936 |
| Charles Carroll | Son | — | ~1940 | |
| Walter Carroll | Son | — | 12 | ~1928 |
| Ronald Carroll | Son | — | 6 | ~1934 |
| John Carroll | Son | — | 10 | ~1930 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 4
Allegheny, Pennsylvania · implied b. ~1926 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carell |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | West Virginia |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 14
Allegheny-County, Pennsylvania · implied b. ~1926 — 10 household members
| Surname | Carroll |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | PITTSBURGH |
| 1935 Residence (County) | ALLEGHENY |
| Highest Grade | No 5 |
| 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 Carroll across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Carroll
Son · 1940 · age 14 · b. ~1926 · Pennsylvania
★ You are viewing this record
Sibling
Charles Carroll
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Carroll
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Carroll
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Carroll
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Carroll
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Carroll
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ronald Carroll
Sibling · 1940 · age 6
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
39 people indexed on this census page (nara:1940:m-t0627-03668-00171)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sam Crummer | 22 | Son | Welder | Pennsylvania |
| 42 | Ruth Crummer | 20 | Daughter | Waitress | Pennsylvania |
| 43 | George G. Miller | 58 | Head | Shop Worker | Ohio |
| 44 | Mamie R. Miller | 56 | Wife | — | Pennsylvania |
| 45 | Alfred Carnetta | 42 | Head | Shipping Clerk | Italy |
| 46 | Margaret Carnetta | 38 | Wife | — | Pennsylvania |
| 47 | John Carnetta | 17 | Son | — | Pennsylvania |
| 48 | Alfred, Jr. Carnetta | 12 | Son | — | Pennsylvania |
| 49 | Marie Carnetta | 4 | Daughter | — | Pennsylvania |
| 50 | Norman Grace | 27 | Head | Buyer Hat Dept. | Pennsylvania |
| 51 | Edith Q. Grace | 23 | Wife | — | Pennsylvania |
| 52 | Jeannean F. Grace | 2 | Daughter | — | Pennsylvania |
| 54 | Albert S. Moyer | 46 | Head | Prop. Own Business | Pennsylvania |
| 55 | Nancy Jane Moyer | 5 | Daughter | — | Pennsylvania |
| 56 | Mary E. Moyer | 3 | Daughter | — | Pennsylvania |
| 57 | Jean R. Graham | 45 | Housekeeper | Housekeeper | Northern Ireland |
| 58 | Mary R. Casper | 53 | Head | — | Northern Ireland |
| 59 | Marie Casper | 19 | Daughter | Sales Lady | Ohio |
| 60 | Thomas Casper | 13 | Son | — | Pennsylvania |
| 61 | Charlotte Casper | 12 | Daughter | — | Pennsylvania |
| 62 | Sarah Johnston | 55 | Sister | Nurse | Northern Ireland |
| 63 | Walter Carroll | 35 | Head | Truck Driver | Pennsylvania |
| 64 | Mary D. Carroll | 33 | Wife | — | Pennsylvania |
| 65 | Robert Carroll THIS PERSON | 14 | Son | — | Pennsylvania |
| 66 | Walter Jr. Carroll | 12 | Son | — | Pennsylvania |
| 67 | John Carroll | 10 | Son | — | Pennsylvania |
| 68 | James Carroll | 8 | Son | — | Pennsylvania |
| 69 | Ronald Carroll | 6 | Son | — | Pennsylvania |
| 70 | Francis Carroll | 4 | Son | — | Pennsylvania |
| 71 | Raymond Carroll | 2 | Son | — | Pennsylvania |
| 72 | Charles Carroll | 0 | Son | — | Pennsylvania |
| 73 | Coleman Connelly | 48 | Head | Plumber Laborer | Irish Free State |
| 74 | Margaret Connelly | 46 | Wife | — | Irish Free State |
| 75 | Coleman Jr. Connelly | 21 | Son | Athletic Teacher | Pennsylvania |
| 76 | Martin Connelly | 18 | Son | Tree Trimmer | Pennsylvania |
| 77 | Irene Connelly | 15 | Daughter | — | Pennsylvania |
| 78 | William Connelly | 12 | Son | — | Pennsylvania |
| 79 | Michael Connelly | 9 | Son | — | Pennsylvania |
| 80 | Barbara Connelly | 6 | Daughter | — | 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)