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Mary Welsh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Welsh across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 3-person household.
Age 11
b. ~1929
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Welsh |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1929 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Welsh | Daughter | — | 11 | ~1929 |
| Charles Welsh | Head | — | 39 | ~1901 |
| Helene Welsh | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Philadelphia, Pennsylvania
Daughter, age 1
Philadelphia, Pennsylvania · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welsh |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Washington D.C. |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Daughter, age 11
Philadelphia-County, Pennsylvania · implied b. ~1929 — 3 household members
| Surname | Welsh |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Industry | 0 |
| 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 Welsh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Welsh
Daughter · 1940 · age 11 · b. ~1929 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03705-00192)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Brown | 21 | Head | Bookkeeper | Pennsylvania |
| 42 | Evelyn Brown | 14 | Daughter | — | Pennsylvania |
| 43 | Donald Brown | 7 | Son | — | Pennsylvania |
| 44 | William H. Goodwin | 53 | Head | Knitter | England |
| 45 | Anna D. Goodwin | 43 | Wife | — | Pennsylvania |
| 46 | Betty Jane Goodwin | 15 | Daughter | — | Pennsylvania |
| 47 | Joseph Mccardy | 54 | Head | Grocer | Ireland |
| 48 | Katherine Mccardy | 44 | Wife | — | Pennsylvania |
| 49 | Joseph W. Mccardy | 20 | Son | Library Assistant | Pennsylvania |
| 50 | Robert D. Mccardy | 17 | Son | — | Pennsylvania |
| 51 | Boyd M. Mccardy | 13 | Son | — | Pennsylvania |
| 52 | George R. Hutt | 59 | Head | Superintendent | Pennsylvania |
| 53 | Anna R. Hutt | 59 | Wife | — | Pennsylvania |
| 54 | Dora Pawker | 67 | Head | — | England |
| 55 | Henrietta Pawker | 27 | Daughter | Teacher | Pennsylvania |
| 56 | Joseph Karr | 40 | Head | Attendant | Pennsylvania |
| 57 | Dorothy Karr | 36 | Wife | Nurse | Pennsylvania |
| 58 | Barnet Mroczkowski | 60 | Head | Proprietor | Poland |
| 59 | J. Raymond Mroczkowski | 32 | Son | Truck Driver | Pennsylvania |
| 60 | Alfred Mroczkowski | 25 | Son | Partner | Pennsylvania |
| 61 | Irene Hagood | 27 | Daughter | — | Pennsylvania |
| 62 | Deloris Hagood | 2 | Granddaughter | — | Texas |
| 64 | Stanley Smith | 28 | Head | Shipper | Pennsylvania |
| 65 | Helen Smith | 34 | Wife | — | Pennsylvania |
| 66 | Henry Elaine Smith | 13 | Step daughter | — | Pennsylvania |
| 67 | George H. Smith | 66 | Father | Collector Of Rents | England |
| 68 | Philip Hirsch | 67 | Head | Storekeeper | Germany |
| 69 | Teresa Hirsch | 60 | Wife | — | Pennsylvania |
| 70 | William M. Schick | 28 | Son in law | Clerk | Pennsylvania |
| 71 | Elizabeth Luchhoff | 85 | Mother in law | — | Germany |
| 72 | Alexander R. Eshert | 59 | Head | Compositor | New Jersey |
| 73 | Anna Eshert | 61 | Wife | — | Connecticut |
| 74 | Thomas Rogers | 58 | Head | Bricklayer | Wales |
| 75 | Annie Rogers | 54 | Wife | — | Wales |
| 76 | Dorothy E. Rogers | 19 | Daughter | Bookkeeper | England |
| 77 | Gordon Rogers | 17 | Son | New Worker | Pennsylvania |
| 78 | Charles Welsh | 39 | Head | Elec Engineer | Pennsylvania |
| 79 | Helene Welsh | 39 | Wife | — | Washington D.C. |
| 80 | Mary L. Welsh THIS PERSON | 11 | Daughter | — | 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)