MK
Margaret Knight — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Margaret Knight across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 6-person household.
Age 20
b. ~1920
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Knight |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | McKees Rocks |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Proof reader |
| Industry | Printing shop |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 496 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Proof Reader |
| Township / Ward | Mckees Rocks |
| Est. Birth Year | ~1920 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Knight | Daughter | — | 20 | ~1920 |
| Elizabeth Knight | Daughter | — | 12 | ~1928 |
| Catherine Knight | Spouse | — | 38 | ~1902 |
| Mary Knight | Daughter | — | 18 | ~1922 |
| Catherine Knight | Daughter | — | 17 | ~1923 |
| Joseph Knight | Head | — | 41 | ~1899 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 10
Allegheny, Pennsylvania · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knight |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Ohio |
| Age at First Marriage | 10 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Allegheny-County, Pennsylvania
Daughter, age 20
Allegheny-County, Pennsylvania · implied b. ~1920 — 6 household members
| Surname | Knight |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | McKees Rocks |
| 1935 Residence (County) | Allegheny |
| Occupation | Proof reader |
| Industry | Printing shop |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 496 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Knight across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Knight
Daughter · 1940 · age 20 · b. ~1920 · Pennsylvania
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Sibling
Catherine Knight
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Knight
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Knight
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-t0627-03410-00079)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Catherine Arvin | 70 | Head | — | Pennsylvania |
| 2 | Ruth Arvin | 28 | Daughter | — | Pennsylvania |
| 3 | William Boyle | 44 | Lodger | Watchman | West Virginia |
| 4 | Felix Francis | 45 | Head | Clerk | Italy |
| 5 | Anita Francis | 40 | Wife | — | Italy |
| 6 | Liberia Francis | 15 | Daughter | — | Pennsylvania |
| 7 | Lillia Francis | 13 | Daughter | — | Kentucky |
| 8 | Walter Francis | 12 | Son | — | Kentucky |
| 9 | Madella Francis | 12 | Daughter | — | Pennsylvania |
| 10 | Vito Petrola | 53 | Partner | Railroad Repairman | Italy |
| 11 | Frank Guerino | 22 | Partner | Chipper | Italy |
| 12 | Philip Viola | 54 | Partner | Laborer | Italy |
| 13 | Samuel Levin | 59 | Head | — | Lithuania |
| 14 | Miriam Levin | 60 | Wife | — | Lithuania |
| 15 | Mildred Silverman | 31 | Daughter | Teacher | Pennsylvania |
| 16 | Ale Silverman | 31 | Son-in-law | Solicitor | Pennsylvania |
| 17 | Joseph Knight | 41 | Head | Molder Foreman | Pennsylvania |
| 18 | Catherine Knight | 38 | Wife | — | Pennsylvania |
| 19 | Margaret Knight THIS PERSON | 20 | Daughter | Proof Reader | Ohio |
| 20 | Mary Knight | 18 | Daughter | Salesgirl | Pennsylvania |
| 21 | Catherine Knight | 17 | Daughter | — | Pennsylvania |
| 22 | Elizabeth Knight | 12 | Daughter | — | Pennsylvania |
| 23 | Florita Evangelo | 57 | Head | Machinist Helper | Italy |
| 24 | Bill Evangelo | 22 | Son | Machinist Helper | Pennsylvania |
| 25 | Hugo Evangelo | 21 | Son | Laborer | Pennsylvania |
| 26 | Christine Evangelo | 20 | Daughter-in-law | — | Pennsylvania |
| 27 | Alphonse Murzynski | 46 | Head | Laborer | Pennsylvania |
| 28 | Alice Murzynski | 47 | Wife | Telephone Operator | Pennsylvania |
| 29 | Stephen Herrick | 43 | Head | Salesman | Pennsylvania |
| 30 | Helen Herrick | 41 | Wife | — | Pennsylvania |
| 31 | Emmeline Herrick | 22 | Daughter | Secretary | Pennsylvania |
| 32 | Dorothy Herrick | 14 | Daughter | — | Pennsylvania |
| 33 | Frank Mcdonough | 27 | Head | Laborer | Pennsylvania |
| 34 | Gertrude Mcdonough | 26 | Wife | — | Pennsylvania |
| 35 | Margaret O'Donnell | 40 | Head | Saleslady | Pennsylvania |
| 36 | Rose M. O'Donnell | 4 | Daughter | — | Pennsylvania |
| 37 | Vincent Debella | 54 | Head | Proprietor | Italy |
| 38 | Frank Debella | 24 | Son | Assistant Proprietor | Pennsylvania |
| 39 | Tony Capuzimati | 52 | Head | Laborer | Italy |
| 40 | Mary Capuzimati | 51 | Wife | — | Italy |
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)