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Helen Mccarthy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Helen Mccarthy across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Michael & Patrick — first a daughter (b.~1917), then head of a 7-person household.
Age 23
b. ~1917
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | McCarthy |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Saleslady |
| Industry | 5 & 10 Store |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 512 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Saleslady |
| Township / Ward | Chester |
| Est. Birth Year | ~1917 |
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 Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Mccarthy | Daughter | — | 23 | ~1917 |
| Gene Mccarthy | Daughter | — | 8 | ~1932 |
| Patrick Mccarthy | Head | — | 49 | ~1891 |
| Patricia Mccarthy | Daughter | — | 15 | ~1925 |
| Marie Mccarthy | Spouse | — | 45 | ~1895 |
| Gertrude Mccarthy | Daughter | — | 19 | ~1921 |
| Mary Mccarthy | Daughter | — | 24 | ~1916 |
Census Appearances
1920
Delaware, Pennsylvania
Daughter, age 3
Delaware, Pennsylvania · implied b. ~1917 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Helen |
| 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 | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Delaware, Pennsylvania
Daughter, age 13
Delaware, Pennsylvania · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Helen |
| 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
Delaware-County, Pennsylvania
Daughter, age 23
Delaware-County, Pennsylvania · implied b. ~1917 — 7 household members
| Surname | McCarthy |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Occupation | Saleslady |
| Industry | 5 & 10 Store |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 512 |
| 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 Helen Mccarthy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Michael Mccarthy (~0.92 confidence) and father Patrick Mccarthy (~0.92 confidence) and mother Mabel Mccarthy (~0.92 confidence) and mother Marie Mccarthy (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Mccarthy
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Patrick Mccarthy
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Mabel Mccarthy
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Marie Mccarthy
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Mccarthy
Daughter · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Mary Mccarthy
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Mccarthy
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gene Mccarthy
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Mccarthy
Sibling · 1940 · age 19
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-t0627-03488-00308)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Winfield S. Fleet | 78 | Head | — | Pennsylvania |
| 2 | Ellen Fleet | 73 | Wife | — | England |
| 3 | Alexander Westman | 47 | Head | Freight Conductor | Pennsylvania |
| 4 | Florence Westman | 47 | Wife | — | Pennsylvania |
| 5 | Mildred Westman | 22 | Daughter | Sales Lady | Pennsylvania |
| 6 | Florence L. Westman | 11 | Daughter | — | Pennsylvania |
| 7 | Lee Waugh | 44 | Head | Chipper & Caulker | Virginia |
| 8 | Isabelle Waugh | 39 | Wife | — | Scotland |
| 9 | William Mccracken | 4 | Grandson | — | Virginia |
| 10 | Raymond J. Saville | 36 | Head | Paper Runner | West Virginia |
| 11 | Dorothy Saville | 29 | Wife | — | Pennsylvania |
| 12 | Claude Read | 61 | Head | — | Wisconsin |
| 13 | Katharine Read | 54 | Wife | W.P.A. | Pennsylvania |
| 16 | John W. Mccready | 52 | Head | Dairyman | Virginia |
| 17 | Bessie Mccready | 48 | Wife | — | Virginia |
| 18 | Doris Taylor | 29 | Daughter | — | Virginia |
| 19 | Enis Mccready | 27 | Daughter | — | Virginia |
| 20 | Thomas Taylor | 34 | Son-in-law | Pipefitter Helper | Virginia |
| 21 | Robert Taylor | 6 | Grandson | — | Virginia |
| 22 | William Taylor | 3 | Granddaughter | — | Virginia |
| 23 | Wade Newman | 43 | Head | Chipper & Caulker | Virginia |
| 24 | Marie Newman | 40 | Wife | — | Delaware |
| 25 | Wade Jr. Newman | 19 | Son | Keeper | North Carolina |
| 26 | April Newman | 12 | Daughter | — | Delaware |
| 27 | Edmund Grantlin | 50 | Head | Spinner | Maryland |
| 28 | Emma Grantlin | 42 | Wife | — | Maryland |
| 29 | Herbert M. Messick | 26 | Head | Shipfitter | North Carolina |
| 30 | Susan Dale Messick | 65 | Mother | — | Maryland |
| 31 | Robert E. Priestley | 67 | Head | Laborer | Pennsylvania |
| 32 | Alberta G. Priestley | 63 | Wife | — | Delaware |
| 33 | Harold Davis | 38 | Roomer | Carpenter | Pennsylvania |
| 34 | Patrick Mccarthy | 49 | Head | Examiner | Pennsylvania |
| 35 | Marie Mccarthy | 45 | Wife | — | Pennsylvania |
| 36 | Mary Mccarthy | 24 | Daughter | Clerk | Pennsylvania |
| 37 | Helen Mccarthy THIS PERSON | 23 | Daughter | Saleslady | Pennsylvania |
| 38 | Gertrude Mccarthy | 19 | Daughter | New Worker | Pennsylvania |
| 39 | Patricia Mccarthy | 15 | Daughter | — | Pennsylvania |
| 40 | Gene Mccarthy | 8 | Daughter | — | Pennsylvania |
Pedigree Summary
Helen + 4 siblings
Gen 1 · 4 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)