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Margaret Griffin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Margaret Griffin across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 9-person household.
Age 18
b. ~1922
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Griffin |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Industry | 18 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1922 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Barbara Griffin | Spouse | — | 51 | ~1889 |
| Catherine Griffin | Daughter | — | 12 | ~1928 |
| Anne Griffin | Daughter | — | 14 | ~1926 |
| Regis Griffin | Son | — | 8 | ~1932 |
| Stephen Griffin | Head | — | 45 | ~1895 |
| John Griffin | Son | — | 19 | ~1921 |
| Stephen Griffin | Son | — | 16 | ~1924 |
| Michael Griffin | Son | — | 9 | ~1931 |
| Margaret Griffin | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 8
Allegheny, Pennsylvania · implied b. ~1922 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 18
Allegheny-County, Pennsylvania · implied b. ~1922 — 9 household members
| Surname | Griffin |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Industry | 18 |
| Highest Grade | Hs 2 |
| 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 Margaret Griffin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Griffin
Daughter · 1940 · age 18 · b. ~1922 · Pennsylvania
★ You are viewing this record
Sibling
Regis Griffin
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anne Griffin
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Griffin
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stephen Griffin
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Griffin
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Griffin
Sibling · 1940 · age 9
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-t0627-03653-00122)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Maureen S Loddam | 1 | Daughter | — | Pennsylvania |
| 42 | Michael D Murray | 66 | Head | Bricklayer | Pennsylvania |
| 43 | Catherine C Murray | 59 | Wife | — | Pennsylvania |
| 44 | James L Murray | 31 | Son | Labor | Pennsylvania |
| 45 | A Earl Murray | 28 | Son | Assistant Supervisor | Pennsylvania |
| 46 | Charles W Murray | 26 | Son | Counter Clerk | Pennsylvania |
| 47 | Edward George Murray | 20 | Son | — | Pennsylvania |
| 48 | Daniel Andreychek | 48 | Head | Crane Operator | Russia |
| 49 | Anna Andreychek | 47 | Wife | — | Russia |
| 50 | George Andreychek | 23 | Son | Labor | Pennsylvania |
| 51 | Paul D Andreychek | 15 | Son | — | Pennsylvania |
| 52 | Gabriella D'Andrea | 26 | Head | Carpenter Helper | Pennsylvania |
| 53 | Helen D'Andrea | 21 | Wife | Waitress | Pennsylvania |
| 54 | Martin Kochenov | 20 | Lodger | Dish Washer | Pennsylvania |
| 55 | Elmer G Arner | 32 | Head | Salesman | Pennsylvania |
| 56 | Eleanor B Arner | 27 | Wife | — | Pennsylvania |
| 57 | John M Arner | 4 | Son | — | Pennsylvania |
| 58 | Stephen Griffin | 45 | Head | Labor | Free State Ireland |
| 59 | Barbara Griffin | 51 | Wife | — | Free State Ireland |
| 60 | John Griffin | 19 | Son | New Worker | Pennsylvania |
| 61 | Margaret Griffin THIS PERSON | 18 | Daughter | — | Pennsylvania |
| 62 | Stephen Jr Griffin | 16 | Son | — | Pennsylvania |
| 63 | Anne Griffin | 14 | Daughter | — | Pennsylvania |
| 64 | Catherine Griffin | 12 | Daughter | — | Pennsylvania |
| 65 | Michael Griffin | 9 | Son | — | Pennsylvania |
| 66 | Regis Griffin | 8 | Son | — | Pennsylvania |
| 67 | Joseph Lewis | 33 | Head | Salesman | Pennsylvania |
| 68 | Sara B Lewis | 32 | Wife | — | Poland |
| 69 | Frederick Lewis | 2 | Son | — | Pennsylvania |
| 70 | Kazimir Rydzak | 63 | Head | — | Poland |
| 71 | Mary E Rydzak | 60 | Wife | — | Poland |
| 72 | Julian Rydzak | 36 | Son | Welder | Kansas |
| 73 | Casper J Chleboski | 34 | Head | Meat Purveyor | Pennsylvania |
| 74 | Agatha B Chleboski | 28 | Wife | — | Kansas |
| 75 | Casper Jr Chleboski | 7 | Son | — | Pennsylvania |
| 76 | Ronald Chleboski | 4 | Son | — | Pennsylvania |
| 77 | Mary Ann Chleboski | 1 | Daughter | — | Pennsylvania |
| 78 | Joseph W Pasquella | 61 | Head | Labor | Poland |
| 79 | Hannah Pasquella | 54 | Wife | — | Poland |
| 80 | Walter Pasquella | 28 | Son | Bartender | 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)