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Mary Armstrong — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Armstrong across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 11-person household.
Age 43
b. ~1897
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Armstrong |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1897 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edna Armstrong | Daughter | — | 17 | ~1923 |
| Eleanor Armstrong | Daughter | — | 5 | ~1935 |
| Regina Armstrong | Daughter | — | 7 | ~1933 |
| Theresa Armstrong | Daughter | — | 12 | ~1928 |
| Anna Armstrong | Daughter | — | 20 | ~1920 |
| Joanne Armstrong | Daughter | — | 1 | ~1939 |
| Dorothy Armstrong | Daughter | — | 15 | ~1925 |
| Leonard Armstrong | Head | — | 45 | ~1895 |
| Frank Armstrong | Son | — | 9 | ~1931 |
| Leonard Armstrong | Son | — | 13 | ~1927 |
| Mary Armstrong | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Philadelphia, Pennsylvania
Spouse, age 33
Philadelphia, Pennsylvania · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 21 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Waitress |
| Industry | Restaurant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Spouse, age 43
Philadelphia-County, Pennsylvania · implied b. ~1897 — 11 household members
| Surname | Armstrong |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Highest Grade | No 8 |
| 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 Mary Armstrong across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Armstrong
Spouse · 1940 · age 43 · b. ~1897 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03716-00524)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emma Stewart | 26 | Daughter | Packer | Pennsylvania |
| 42 | James Stewart | 21 | Son | Painter | Pennsylvania |
| 43 | George Schwinn | 32 | Son-in-law | Inspector | Pennsylvania |
| 44 | Elizabeth Schwinn | 28 | Daughter | Clerical | Pennsylvania |
| 45 | James Mcfarland | 87 | Father | — | Pennsylvania |
| 46 | Peter Lamb | 49 | Head | Laborer | Pennsylvania |
| 47 | Margaret Lamb | 42 | Wife | — | Pennsylvania |
| 48 | Edward Lamb | 21 | Son | New Worker (Just Assigned) | Pennsylvania |
| 49 | Thomas Lamb | 20 | Son | New Worker | Pennsylvania |
| 50 | Helen Lamb | 19 | Daughter | Packer | Pennsylvania |
| 51 | Margaret Lamb | 18 | Daughter | New Worker | Pennsylvania |
| 52 | George Lamb | 16 | Son | — | Pennsylvania |
| 53 | William Lamb | 14 | Son | — | Pennsylvania |
| 54 | Marie Lamb | 11 | Daughter | — | Pennsylvania |
| 55 | Theresa Lamb | 9 | Daughter | — | Pennsylvania |
| 56 | James P. Hyland | 63 | Head | Truck Driver | Pennsylvania |
| 57 | Lawrence Hyland | 18 | Son | — | Pennsylvania |
| 58 | Frank Kelly | 28 | Son-in-law | Repairman | Pennsylvania |
| 59 | Catherine Kelly | 25 | Daughter | — | Pennsylvania |
| 60 | Kathleen Kelly | 1 | Granddaughter | — | Pennsylvania |
| 61 | Leonard Armstrong | 45 | Head | Stereotype Operator | Pennsylvania |
| 62 | Mary Armstrong THIS PERSON | 43 | Wife | — | Pennsylvania |
| 63 | Anna Armstrong | 20 | Daughter | Ward Maid | Pennsylvania |
| 64 | Edna Armstrong | 17 | Daughter | — | Pennsylvania |
| 65 | Dorothy Armstrong | 15 | Daughter | — | Pennsylvania |
| 66 | Leonard Armstrong | 13 | Son | — | Pennsylvania |
| 67 | Theresa Armstrong | 12 | Daughter | — | Pennsylvania |
| 68 | Frank Armstrong | 9 | Son | — | Pennsylvania |
| 69 | Regina Armstrong | 7 | Daughter | — | Pennsylvania |
| 70 | Eleanor Armstrong | 5 | Daughter | — | Pennsylvania |
| 71 | Joanne Armstrong | 1 | Daughter | — | Pennsylvania |
| 72 | Anna Payne | 43 | Head | Charwoman | Pennsylvania |
| 73 | George Payne | 20 | Son | Office Work | Pennsylvania |
| 74 | John Payne | 15 | Son | — | Pennsylvania |
| 75 | Jularita Payne | 11 | Daughter | — | Pennsylvania |
| 76 | Dolores Payne | 5 | Daughter | — | Pennsylvania |
| 77 | Annie Curry | 49 | Head | Laundress | Pennsylvania |
| 78 | Anna Curry | 31 | Daughter | Clerk | Pennsylvania |
| 79 | Eleanor Curry | 27 | Daughter | Secretary | Pennsylvania |
| 80 | Joseph Curry | 25 | Son | Helper | 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)