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Margaret Farrell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Margaret Farrell across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1878), then head of a 5-person household.
Age 62
b. ~1878
Female
Head
Born: Pennsylvania
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Farrell |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1878 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| George Farrell | Son | — | 28 | ~1912 |
| Margaret Farrell | Head | — | 62 | ~1878 |
| Mary Farrell | Daughter | — | 1 | ~1939 |
| William Farrell | Son | — | 37 | ~1903 |
| Raymond Farrell | Son | — | 30 | ~1910 |
Census Appearances
1920
Allegheny, Pennsylvania
Other, age 40
Allegheny, Pennsylvania · implied b. ~1880 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | Margaret E. |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Other, age 53
Allegheny, Pennsylvania · implied b. ~1877 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | Margaret |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 62
Allegheny-County, Pennsylvania · implied b. ~1878 — 5 household members
| Surname | Farrell |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Farrell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Farrell
Head · 1940 · age 62 · b. ~1878 · 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-t0627-03657-00091)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter Konop | 49 | Head | Repairman | Poland |
| 2 | Rose Konop | 44 | Wife | — | Pennsylvania |
| 3 | Stanley Konop | 23 | Son | Waiter | Pennsylvania |
| 4 | Mary Konop | 21 | Daughter | Bender | Pennsylvania |
| 5 | Stella Konop | 18 | Daughter | Dress Worker | Pennsylvania |
| 6 | Irene Konop | 16 | Daughter | — | Pennsylvania |
| 7 | Edward Konop | 13 | Son | — | Pennsylvania |
| 8 | Walter Jr Konop | 10 | Son | — | Pennsylvania |
| 9 | Victoria Krupinski | 22 | Head | Finisher | Pennsylvania |
| 10 | Robert Kansler | 20 | Head | General Man | Pennsylvania |
| 11 | Agnes Kansler | 17 | Wife | — | Pennsylvania |
| 12 | William Shearer | 58 | Head | Printer | Pennsylvania |
| 13 | George Hellegan | 64 | Head | — | Pennsylvania |
| 14 | Cornelia Hellegan | 59 | Wife | — | Pennsylvania |
| 15 | John Cavanaugh | 41 | Head | Engineer | Pennsylvania |
| 16 | Matilda Cavanaugh | 40 | Wife | — | Pennsylvania |
| 17 | Dorothy Cavanaugh | 16 | Daughter | — | Pennsylvania |
| 18 | James Cavanaugh | 14 | Son | — | Pennsylvania |
| 19 | John Jr Cavanaugh | 10 | Son | — | Pennsylvania |
| 20 | Robert Cavanaugh | 7 | Son | — | Pennsylvania |
| 21 | John I Cavanaugh | 76 | Father | — | Ohio |
| 22 | Lena Ham | 76 | Aunt | — | Pennsylvania |
| 23 | Margaret Farrell THIS PERSON | 62 | Head | — | Pennsylvania |
| 24 | William Farrell | 37 | Son | Clerk - Payroll | Pennsylvania |
| 25 | Raymond Farrell | 30 | Son | Clerk - Shipping | Pennsylvania |
| 26 | George Farrell | 28 | Son | Shipping Clerk | Pennsylvania |
| 27 | Mary Anne Farrell | 1 | Daughter | — | Pennsylvania |
| 28 | Caroline Zaleska | 65 | Head | — | Poland |
| 29 | Jennie Zaleska | 34 | Daughter | Machine Operator | Pennsylvania |
| 30 | Walter Zaleska | 35 | Son | Truck Driver | Pennsylvania |
| 31 | Katherine Zaleska | 31 | Daughter | Ex-Paster | Pennsylvania |
| 32 | Stanley Moczydlowski | 42 | Head | Chipper | Poland |
| 33 | Frieda Moczydlowski | 41 | Wife | Cutter | Poland |
| 34 | John Moczydlowski | 18 | Son | — | Pennsylvania |
| 35 | Aurella Moczydlowski | 15 | Daughter | — | Pennsylvania |
| 36 | Edward Moczydlowski | 12 | Son | — | Pennsylvania |
| 37 | Lorraine Moczydlowski | 10 | Daughter | — | Pennsylvania |
| 38 | Victor Pagerski | 33 | Head | Laborer | Pennsylvania |
| 39 | Josephine Pagerski | 33 | Wife | — | Pennsylvania |
| 40 | Appolonia Appolonia | 50 | Head | — | Poland |
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)