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Mary Monroe — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Monroe across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1908), then head of a 7-person household.
Age 32
b. ~1908
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Monroe |
| Given Name | Mary S |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1908 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Monroe | Daughter | — | 2 | ~1938 |
| Margaret Monroe | Daughter | — | 7 | ~1933 |
| Mary Monroe | Spouse | — | 32 | ~1908 |
| Kathleen Monroe | Daughter | — | 10 | ~1930 |
| Jean Monroe | Daughter | — | 8 | ~1932 |
| Mary Monroe | Daughter | — | 12 | ~1928 |
| Joseph Monroe | Head | — | 37 | ~1903 |
Census Appearances
1930
Allegheny, Pennsylvania
Other, age 21
Allegheny, Pennsylvania · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monroe |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 17 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Spouse, age 32
Allegheny-County, Pennsylvania · implied b. ~1908 — 7 household members
| Surname | Monroe |
| Given Name | Mary S |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Industry | 0 |
| 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 Monroe across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Monroe
Spouse · 1940 · age 32 · b. ~1908 · 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 — 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-t0627-03658-00277)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Radinovich | 14 | Daughter | — | Yugoslavia |
| 2 | Matthew A Radinovich | 4 | Son | — | Pennsylvania |
| 3 | Peter Balhovec | 53 | Head | Chipper | Yugoslavia |
| 4 | Frances Balhovec | 43 | Wife | — | Yugoslavia |
| 5 | Anna M Balhovec | 19 | Daughter | New Worker | Yugoslavia |
| 6 | Catherine Balhovec | 15 | Daughter | — | New York |
| 7 | Anthony J Candek | 28 | Head | Rigger | Pennsylvania |
| 8 | Anna S Candek | 30 | Wife | — | Pennsylvania |
| 9 | Annette C Candek | 4 | Daughter | — | Pennsylvania |
| 10 | Elizabeth M Candek | 2 | Daughter | — | Pennsylvania |
| 11 | Joseph F Monroe | 37 | Head | Machine Hand | Pennsylvania |
| 12 | Mary S Monroe THIS PERSON | 32 | Wife | — | Pennsylvania |
| 13 | Mary J Monroe | 12 | Daughter | — | Pennsylvania |
| 14 | Kathleen E Monroe | 10 | Daughter | — | Pennsylvania |
| 15 | Jean F Monroe | 8 | Daughter | — | Pennsylvania |
| 16 | Margaret A Monroe | 7 | Daughter | — | Pennsylvania |
| 17 | Elizabeth A Monroe | 2 | Daughter | — | Pennsylvania |
| 18 | Mary L Besal | 27 | Head | Folder | Pennsylvania |
| 19 | Adolph J Besal | 23 | Brother | Pin Boy | Pennsylvania |
| 20 | Josephine Besal | 18 | Sister | Typist & File Clerk | Pennsylvania |
| 21 | John H Schmitt | 38 | Head | Grease Maker Helper | Pennsylvania |
| 22 | Margaret R Schmitt | 18 | Daughter | New Worker | Pennsylvania |
| 23 | Frances M Schmitt | 16 | Daughter | — | Pennsylvania |
| 24 | Vincent P Scott | 38 | Head | Free Machine Operator | Pennsylvania |
| 25 | Rose H Scott | 37 | Wife | — | Pennsylvania |
| 26 | Vincent Jr Scott | 14 | Son | — | Pennsylvania |
| 27 | Rosemary Scott | 13 | Daughter | — | Pennsylvania |
| 28 | Joseph Scott | 12 | Son | — | Pennsylvania |
| 29 | Dolores M Scott | 11 | Daughter | — | Pennsylvania |
| 30 | Francis J Scott | 9 | Son | — | Pennsylvania |
| 31 | Anna L Scott | 8 | Daughter | — | Pennsylvania |
| 32 | Eugene J Scott | 7 | Son | — | Pennsylvania |
| 33 | Lawrence Scott | 5 | Son | — | Pennsylvania |
| 34 | Eileen Scott | 3 | Daughter | — | Pennsylvania |
| 35 | Patricia Scott | 2 | Daughter | — | Pennsylvania |
| 36 | Richard Scott | 0 | Son | — | Pennsylvania |
| 37 | James M Conley | 35 | Head | Laborer | Pennsylvania |
| 38 | Johanna P Conley | 35 | Wife | — | Pennsylvania |
| 39 | Margaret M Conley | 11 | Daughter | — | Pennsylvania |
| 40 | James J Conley | 10 | Son | — | 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)