MT
Mary Tracy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Mary Tracy across the 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 10-person household.
Age 13
b. ~1927
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Tracy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Chester |
| Est. Birth Year | ~1927 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Tracy | Daughter | — | 13 | ~1927 |
| Joseph Tracy | Son | — | 10 | ~1930 |
| Francis Tracy | Son | — | 12 | ~1928 |
| James Henry | Other | — | 54 | ~1886 |
| Mary Tracy | Spouse | — | 40 | ~1900 |
| Lawrence Tracy | Head | — | 47 | ~1893 |
| John Lynne | Other | — | 45 | ~1895 |
| George Dickson | Other | — | 50 | ~1890 |
| Margaret Tracy | Daughter | — | 16 | ~1924 |
| Lawrence Tracy | Son | — | 14 | ~1926 |
Census Appearances
1930
Delaware, Pennsylvania
Daughter, age 2
Delaware, Pennsylvania · implied b. ~1928 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tracey |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Daughter, age 13
Delaware-County, Pennsylvania · implied b. ~1927 — 10 household members
| Surname | Tracy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Highest Grade | No 6 |
| 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 Tracy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Tracy
Daughter · 1940 · age 13 · b. ~1927 · Pennsylvania
★ You are viewing this record
Sibling
Joseph Tracy
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Tracy
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Tracy
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Tracy
Sibling · 1940 · age 14
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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-03488-00068)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Millard | 40 | Head | — | Pennsylvania |
| 42 | Charles Ireland | 65 | Father | Dep Sheriff | Pennsylvania |
| 43 | Eddie Ireland | 61 | Mother | — | Delaware |
| 44 | Troy Durham | 29 | Head | Insurance Collector | North Carolina |
| 45 | Laura Durham | 26 | Wife | — | Pennsylvania |
| 46 | Elizabeth Durham | 4 | Daughter | — | Pennsylvania |
| 47 | Patrick Carr | 76 | Head | — | Pennsylvania |
| 48 | Martha Carr | 78 | Wife | — | New Jersey |
| 49 | Mable Barber | 33 | Head | — | Pennsylvania |
| 50 | Ida Barber | 4 | Daughter | — | New Jersey |
| 51 | Andrew Pheron | 46 | Head | Labourer | Czechoslovakia |
| 52 | Mary Pheron | 45 | Wife | — | Czechoslovakia |
| 53 | Mary Pheron | 20 | Niece | Spinner | Czechoslovakia |
| 54 | Lawrence Tracy | 47 | Head | Bar Tender | Pennsylvania |
| 55 | Mary Tracy | 40 | Wife | — | Pennsylvania |
| 56 | Margaret Tracy | 16 | Daughter | — | Pennsylvania |
| 57 | Lawrence Tracy | 14 | Son | — | Pennsylvania |
| 58 | Mary Tracy THIS PERSON | 13 | Daughter | — | Pennsylvania |
| 59 | Francis Tracy | 12 | Son | — | Pennsylvania |
| 60 | Joseph Tracy | 10 | Son | — | Pennsylvania |
| 61 | James Henry | 54 | Lodger | Laborer | Pennsylvania |
| 62 | George Dickson | 50 | Lodger | Laborer | Pennsylvania |
| 63 | John Lynne | 45 | Lodger | Laborer | Pennsylvania |
| 66 | Sarah Hinde | 55 | Head | — | England |
| 67 | Maude Hinde | 35 | Daughter | Cone Winder | England |
| 68 | Arthur Hinde | 24 | Son | Machinist | Pennsylvania |
| 69 | Robert Hinde | 22 | Son | Oiler | Pennsylvania |
| 70 | Alice Hinde | 19 | Daughter | Finisher | Pennsylvania |
| 71 | Jean Hinde | 18 | Daughter | — | Pennsylvania |
| 72 | George Hinde | 17 | Son | — | Pennsylvania |
| 73 | Alfred Aschenbach | 25 | Head | Digger | Pennsylvania |
| 74 | August Aschenbach | 29 | Brother | Mechanic | Pennsylvania |
| 75 | Lewis Aschenbach | 23 | Brother | Welder | Pennsylvania |
| 76 | Dorothy Aschenbach | 15 | Sister | — | Pennsylvania |
| 77 | Alma Lixon | 31 | Head | — | Pennsylvania |
| 78 | Alma Lixon | 17 | Daughter | — | Pennsylvania |
| 79 | Edward Lixon | 14 | Son | — | Pennsylvania |
| 80 | James Lixon | 11 | 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)