MA
Mary Armstrong — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Mary Armstrong across the 1920, 1930 and 1940 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 2-person household.
Age 47
b. ~1883
Female
Head
Born: England
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Armstrong |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1889 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | seamstress |
| Industry | department store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Seamstress |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1883 |
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.
2 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Armstrong | Head | — | 47 | ~1883 |
| Nelson Armstrong | Son | — | 18 | ~1912 |
Census Appearances
1920
Allegheny, Pennsylvania
Spouse, age 36
Allegheny, Pennsylvania · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Mares |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1930
Allegheny, Pennsylvania
Head, age 47
Allegheny, Pennsylvania · implied b. ~1883 — 2 household members
| Surname | Armstrong |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1889 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | seamstress |
| Industry | department store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Allegheny-County, Pennsylvania
Other, age 56
Allegheny-County, Pennsylvania · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Mary |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Occupation | Seamstress |
| Industry | Drapery Worker |
| Class of Worker | PW |
| Income (1939) | 1005 |
| Highest Grade | No 7 |
| 1935 Residence | Pennsylvania |
| Birth Country | England |
| Birthplace (normalized) | england |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Armstrong
Head · 1930 · age 47 · b. ~1883 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel1981:1032)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Collin Jr. Palmere | 3 | grand-daughter | None | Pennsylvania |
| 2 | Eleanor M. Palmere | 0 | grand-daughter | None | Pennsylvania |
| 3 | — | None | — | — | — |
| 4 | — | None | — | — | — |
| 5 | Philip Lowers | 30 | Head | Assistant Credit Manager | Pennsylvania |
| 6 | Mayme Lowers | 29 | wife | None | Pennsylvania |
| 7 | Arthur L. Engelhart | 46 | Head | Telegraph Operator | New York |
| 8 | Florence Engelhart | 44 | wife | None | Michigan |
| 9 | Mary Armstrong THIS PERSON | 47 | Head | Seamstress | England |
| 10 | Nelson Armstrong | 18 | son | Bell Boy | Pennsylvania |
| 11 | Lewis E. Davis | 76 | Head | Doctor | Pennsylvania |
| 12 | Sarah W. Davis | 60 | wife | None | Pennsylvania |
| 13 | Marian E. Davis | 40 | daughter | Clerk | Pennsylvania |
| 14 | Micheal Purtell | 37 | Head | Labor Boss | Pennsylvania |
| 15 | Anna Purtell | 37 | wife | None | Pennsylvania |
| 16 | Paul Purtell | 19 | son | Clerk | Pennsylvania |
| 17 | Isaac M. Tarr | 43 | Head | Merchant | Pennsylvania |
| 18 | Grace Tarr | 12 | daughter | None | Pennsylvania |
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| 50 | — | None | — | — | — |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)