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Mary Waters — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Pennsylvania
Our Model Tree links this Mary Waters across the 1930 and 1940 US Censuses in Montgomery-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Pennsylvania |
| Surname | Waters |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Ardmore |
| Additional Details | |
| Highest Grade | Hs 2 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Ardmore |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Waters | Daughter | — | 15 | ~1925 |
| Patricia Waters | Daughter | — | 10 | ~1930 |
| Marguerite Waters | Daughter | — | 5 | ~1935 |
| Veronica Waters | Daughter | — | 7 | ~1933 |
| Anna Waters | Daughter | — | 11 | ~1929 |
| Joseph Waters | Head | — | 40 | ~1900 |
| Flora Waters | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Delaware, Pennsylvania
Daughter, age 5
Delaware, Pennsylvania · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Waters |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Montgomery-County, Pennsylvania
Daughter, age 15
Montgomery-County, Pennsylvania · implied b. ~1925 — 7 household members
| Surname | Waters |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Ardmore |
| Highest Grade | Hs 2 |
| 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 Waters across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Waters
Daughter · 1940 · age 15 · b. ~1925 · Pennsylvania
★ You are viewing this record
Sibling
Patricia Waters
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Waters
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marguerite Waters
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Veronica Waters
Sibling · 1940 · age 7
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-t0627-03580-00478)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Regina Ione | 20 | Daughter | Salesgirl | Pennsylvania |
| 2 | Stella Ione | 18 | Daughter | — | Pennsylvania |
| 3 | Thomas Ione | 17 | Son | — | Pennsylvania |
| 4 | John Mcconnell | 44 | Head | Truck Driver | Pennsylvania |
| 5 | Mary Mcconnell | 44 | Wife | — | Eire Ireland |
| 6 | Margaret Mcconnell | 23 | Daughter | Telephone Operator | Pennsylvania |
| 7 | Dorothy Mcconnell | 19 | Daughter | New Worker | Pennsylvania |
| 8 | Doris Mcconnell | 19 | Daughter | New Worker | Pennsylvania |
| 9 | Joseph Mertz | 34 | Head | Assembly | Pennsylvania |
| 10 | Emma Mertz | 28 | Wife | — | Pennsylvania |
| 11 | Joseph Mertz | 3 | Son | — | Pennsylvania |
| 12 | Thomas Mertz | 1 | Son | — | Pennsylvania |
| 13 | Joseph Zuccheri | 41 | Head | Gardner | Italy |
| 14 | Elvira Zuccheri | 42 | Wife | — | Italy |
| 15 | Frank Zuccheri | 18 | Son | — | Italy |
| 16 | Rose Zuccheri | 9 | Daughter | — | Pennsylvania |
| 17 | Nicholas Ciotte | 37 | Head | Chauffeur | Italy |
| 18 | Stella Ciotte | 35 | Wife | — | Pennsylvania |
| 19 | Arnold Ciotte | 6 | Son | — | Pennsylvania |
| 20 | Joseph Richmond | 43 | Head | Bartender | Pennsylvania |
| 21 | Thomas Richmond | 40 | Brother | Machinist | Pennsylvania |
| 22 | Robert Richmond | 38 | Brother | — | Pennsylvania |
| 23 | Joseph Waters | 40 | Head | Roofer | Pennsylvania |
| 24 | Flora Waters | 44 | Wife | — | Eire Ireland |
| 25 | Mary Waters THIS PERSON | 15 | Daughter | — | Pennsylvania |
| 26 | Anna Waters | 11 | Daughter | — | Pennsylvania |
| 27 | Patricia Waters | 10 | Daughter | — | Pennsylvania |
| 28 | Veronica Waters | 7 | Daughter | — | Pennsylvania |
| 29 | Marguerite Waters | 5 | Daughter | — | Pennsylvania |
| 30 | Frank Peabody | 75 | Head | Janitor | Connecticut |
| 31 | Mary Peabody | 64 | Wife | — | Connecticut |
| 32 | Mildred Peabody | 35 | Daughter | Inspector | Connecticut |
| 33 | Elizabeth Devenney | 51 | Head | Janitress | Pennsylvania |
| 34 | John Devenney | 19 | Son | Stable Man | Pennsylvania |
| 35 | Ellen Devenney | 16 | Daughter | — | Pennsylvania |
| 36 | Frederick Mobley | 38 | Head | Janitor | Georgia |
| 37 | Lucille Mobley | 23 | Wife | — | N. Carolina |
| 38 | Calvin Mobley | 5 | Son | — | N. Carolina |
| 39 | Ollie Cooper | 19 | Lodger | Practical Nurse | N. Carolina |
| 40 | Nathan Cooper | 20 | Lodger | Janitor | N. Carolina |
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)