MP
Mary Parker — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Parker across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Arthur & John — first a daughter (b.~1916), then head of a 5-person household.
Age 24
b. ~1916
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Parker |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Mt Lebanon Twp |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Stenographer |
| Township / Ward | Mt Lebanon Twp |
| Est. Birth Year | ~1916 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Ruth Parker | Daughter | — | 21 | ~1919 |
| Mary Parker | Daughter | — | 24 | ~1916 |
| Alma Parker | Head | — | 50 | ~1890 |
| Raymond Parker | Son | — | 26 | ~1914 |
| Joseph Parker | Son | — | 28 | ~1912 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 3
Allegheny, Pennsylvania · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Parker |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 13
Allegheny, Pennsylvania · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Parker |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 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
Daughter, age 24
Allegheny-County, Pennsylvania · implied b. ~1916 — 5 household members
| Surname | Parker |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Mt Lebanon Twp |
| 1935 Residence (County) | Allegheny |
| Occupation | Stenographer |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 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 Parker across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Parker (~0.92 confidence) and father John Parker (~0.92 confidence) and mother Mary Parker (~0.92 confidence) and mother Alma Parker (~0.92 confidence) and mother Grace Parker (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Parker
b. ~1889
Source father
● Household
· direct · ~0.92
Father
John Parker
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Mary Parker
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Alma Parker
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Grace Parker
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Parker
Daughter · 1940 · age 24 · b. ~1916 · Pennsylvania
★ You are viewing this record
Sibling
Raymond Parker
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Parker
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Parker
Sibling · 1940 · age 21
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-t0627-03411-00404)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patsy M. Stephens | 24 | Head | Sales Agent | Ohio |
| 2 | Nellie H. Stephens | 56 | Wife | — | Pennsylvania |
| 3 | Sara Stephens | 23 | Daughter | — | Pennsylvania |
| 4 | William Brown | 45 | Head | Salesman | Ireland |
| 5 | Mary Brown | 35 | Wife | — | Pennsylvania |
| 6 | Jo-Ann Brown | 5 | Daughter | — | Pennsylvania |
| 7 | David E. Healy | 42 | Head | Fireman | Pennsylvania |
| 8 | Jean Healy | 32 | Wife | — | Pennsylvania |
| 9 | Orval Armstrong | 59 | Father-in-law | Accountant | Pennsylvania |
| 10 | Ena Armstrong | 28 | Sister-in-law | — | Pennsylvania |
| 11 | Mariano G. Turpura | 46 | Head | Fruit Merch | Pennsylvania |
| 12 | Agnes Turpura | 40 | Wife | — | Pennsylvania |
| 13 | Francis Turpura | 19 | Daughter | — | Pennsylvania |
| 14 | Rose Marie Turpura | 18 | Daughter | — | Pennsylvania |
| 15 | Matthew Turpura | 10 | Son | — | Pennsylvania |
| 16 | Leo Tattersall | 49 | Head | Corp Counsel | Pennsylvania |
| 17 | Ruth S. Tattersall | 51 | Wife | — | Pennsylvania |
| 18 | H. L. Tattersall | 19 | Son | — | Pennsylvania |
| 19 | Dorothy Tattersall | 14 | Daughter | — | Pennsylvania |
| 20 | John F. Tattersall | 12 | Son | — | Pennsylvania |
| 21 | Leo F. Joseph | 32 | Head | Lawyer | Pennsylvania |
| 22 | Goldie Joseph | 32 | Wife | — | Ohio |
| 23 | Ada Joseph | 6 | Daughter | — | Pennsylvania |
| 24 | William Joseph | 3 | Son | — | Pennsylvania |
| 25 | Alberta Kohl | 17 | Servant | Maid | Pennsylvania |
| 26 | Fred York | 37 | Head | Sales Manager | Indiana |
| 27 | Gertrude York | 35 | Wife | — | Pennsylvania |
| 28 | End Of Block | None | — | — | — |
| 29 | Alma Parker | 50 | Head | — | Pennsylvania |
| 30 | Joseph Parker | 28 | Son | Mail Clerk | Pennsylvania |
| 31 | Raymond Parker | 26 | Son | — | Pennsylvania |
| 32 | Mary Parker THIS PERSON | 24 | Daughter | Stenographer | Pennsylvania |
| 33 | Ruth Parker | 21 | Daughter | — | Pennsylvania |
| 34 | Lawrence Helm | 49 | Head | Glass Manf. | Pennsylvania |
| 35 | Christina Helm | 36 | Wife | — | Pennsylvania |
| 36 | Amand Kraus | 40 | Head | Field Man | Pennsylvania |
| 37 | Marie Kraus | 40 | Wife | — | Pennsylvania |
| 38 | Charles Kraus | 16 | Son | — | Pennsylvania |
| 39 | Donald Kraus | 12 | Son | — | Pennsylvania |
| 40 | Leah Eckstein | 24 | Lodger | Stenographer | Pennsylvania |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)