MS
Mary Simon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Pennsylvania
Our Model Tree links this Mary Simon across the 1930 and 1940 US Censuses in Montgomery-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 11-person household.
Age 15
b. ~1925
Female
Daughter
Born: North Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Pennsylvania |
| Surname | Simon |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | North Carolina |
| 1935 Residence (City) | Norristown borough |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
| Township / Ward | Norristown Borough |
| Est. Birth Year | ~1925 |
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 |
|---|---|---|---|---|
| Mary Simon | Daughter | — | 15 | ~1925 |
| Patsy Simon | Spouse | — | 46 | ~1894 |
| Doris Simon | Daughter | — | 7 | ~1933 |
| Walter Simon | Head | — | 49 | ~1891 |
| Walter Simon | Son | — | 23 | ~1917 |
| Thelma Simon | Daughter | — | 9 | ~1931 |
| Clarence Simon | Son | — | 11 | ~1929 |
| Morris Simon | Son | — | 12 | ~1928 |
| Vernon Simon | Son | — | 5 | ~1935 |
| Leonard Simon | Son | — | 3 | ~1937 |
| Coda Simon | Son | — | 19 | ~1921 |
Census Appearances
1930
Montgomery, Pennsylvania
Daughter, age 5
Montgomery, Pennsylvania · implied b. ~1925 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | North Carolina |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | North Carolina |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
1940
Montgomery-County, Pennsylvania
Daughter, age 15
Montgomery-County, Pennsylvania · implied b. ~1925 — 11 household members
| Surname | Simon |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | North Carolina |
| 1935 Residence (City) | Norristown borough |
| 1935 Residence (County) | Montgomery |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
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 Simon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Simon
Daughter · 1940 · age 15 · b. ~1925 · Pennsylvania
★ You are viewing this record
Sibling
Clarence Simon
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Simon
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Simon
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Simon
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vernon Simon
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Coda Simon
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Simon
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Morris Simon
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 — Montgomery-County, Pennsylvania
Open full size
1940 US Federal Census — Montgomery-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03581-00582)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dolores Mallicola | 8 | daughter | — | Pennsylvania |
| 2 | Mary Mallicola | 6 | daughter | — | Pennsylvania |
| 3 | Peter Jr. Mallicola | 1 | son | — | Pennsylvania |
| 4 | Walter Simon | 49 | Head | Fireman | North Carolina |
| 5 | Patsy Simon | 46 | wife | — | North Carolina |
| 6 | Walter Jr. Simon | 23 | son | General Laborer | North Carolina |
| 7 | Coda Simon | 19 | son | Helper | North Carolina |
| 8 | Mary Simon THIS PERSON | 15 | daughter | — | North Carolina |
| 9 | Morris Simon | 12 | son | — | Virginia |
| 10 | Clarence Simon | 11 | son | — | Virginia |
| 11 | Thelma Simon | 9 | daughter | — | Pennsylvania |
| 12 | Doris Simon | 7 | daughter | — | Pennsylvania |
| 13 | Vernon Simon | 5 | son | — | Pennsylvania |
| 14 | Leonard Simon | 3 | son | — | Pennsylvania |
| 15 | William Rapine | 29 | Head | Fire Worker | Pennsylvania |
| 16 | Pearl Mckernan | 36 | Housekeeper | House Work | Pennsylvania |
| 17 | June Mckernan | 16 | daughter | House Work | Pennsylvania |
| 18 | Thomas Mckernan | 15 | son | — | Pennsylvania |
| 19 | Francis Kennedy | 33 | Head | Laborer | Pennsylvania |
| 20 | Julia Kennedy | 29 | wife | — | Pennsylvania |
| 21 | Mary L. Kennedy | 11 | daughter | — | Pennsylvania |
| 22 | Helene Kennedy | 9 | daughter | — | Pennsylvania |
| 23 | Julia Kennedy | 5 | daughter | — | Pennsylvania |
| 24 | Mary Kennedy | 67 | Mother | — | Pennsylvania |
| 25 | Sara Kennedy | 39 | Sister | — | Pennsylvania |
| 26 | Edward Guider | 42 | Head | Engineer | Connecticut |
| 27 | Anna Guider | 42 | wife | Seamstress | Pennsylvania |
| 28 | Edward Jr. Guider | 12 | son | — | Pennsylvania |
| 29 | James Guider | 11 | son | — | Pennsylvania |
| 30 | James Kelso | 46 | Brother-in-law | — | Pennsylvania |
| 31 | Mary Maguire | 64 | Head | Janitress | Pennsylvania |
| 32 | Julia Caskel | 32 | daughter | — | Pennsylvania |
| 33 | Eleanore M. Caskel | 15 | daughter | — | Pennsylvania |
| 34 | Mary Jane Caskel | 13 | daughter | — | Pennsylvania |
| 35 | Mary Kehoe | 64 | Head | Burler | Pennsylvania |
| 36 | Julia Kehoe | 59 | Sister | Burler | Pennsylvania |
| 37 | Nicholas Gazona | 48 | Head | Candy Maker | Greece |
| 38 | Marie Gazona | 37 | wife | — | Pennsylvania |
| 39 | Eleanora Gazona | 18 | daughter | New Worker | Pennsylvania |
| 40 | John Gazona | 2 | 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)