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Mary Welch — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Welch across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1901), then head of a 11-person household.
Age 39
b. ~1901
Female
Spouse
Born: Germany
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Welch |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1901 |
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 |
|---|---|---|---|---|
| Anna Welch | Daughter | — | 11 | ~1929 |
| Catherine Welch | Daughter | — | 9 | ~1931 |
| Julia Welch | Daughter | — | 8 | ~1932 |
| Mary Welch | Daughter | — | 14 | ~1926 |
| Harry Welch | Head | — | 43 | ~1897 |
| Harry Welch | Son | — | 18 | ~1922 |
| Joseph Welch | Son | — | 15 | ~1925 |
| George Welch | Son | — | 17 | ~1923 |
| Francis Welch | Son | — | 13 | ~1927 |
| Charles Welch | Son | — | 7 | ~1933 |
| Mary Welch | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Philadelphia, Pennsylvania
Spouse, age 28
Philadelphia, Pennsylvania · implied b. ~1902 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Alien |
| Year of Immigration | 1912 |
| Age at First Marriage | 18 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Philadelphia-County, Pennsylvania
Spouse, age 39
Philadelphia-County, Pennsylvania · implied b. ~1901 — 11 household members
| Surname | Welch |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Welch across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Welch
Spouse · 1940 · age 39 · b. ~1901 · 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
40 people indexed on this census page (nara:1940:m-t0627-03688-00328)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eleanor O'Brien | 25 | daughter | Strapper | Penna |
| 2 | Ida O'Brien | 21 | daughter | — | Penna |
| 3 | Edward Mccullough | 8 | grandson | — | Penna |
| 4 | Anthony Brake | 50 | Head | Laborer | Lithuania |
| 5 | Veronica Patrick | 51 | housekeeper | Housework | Lithuania |
| 6 | Helen Poreley | 15 | daughter | — | Penna |
| 7 | Anna Homesheites | 29 | daughter | Cleaner | Penna |
| 8 | Edward Homesheites | 34 | son-in-law | Laborer | Penna |
| 9 | Joan Homesheites | 5 | granddaughter | — | Penna |
| 10 | Daniel Mcnulty | 45 | Head | Foreman | Penna |
| 11 | Martha Mcnulty | 51 | wife | — | Germany |
| 12 | John Nurtz | 23 | son | Stevedore | Penna |
| 13 | David Dolan | 29 | lodger | Maintenance | Penna |
| 14 | Anna Kramer | 49 | Head | — | Penna |
| 15 | John Rundy | 51 | Head | Laborer | Russia |
| 16 | Mary Rundy | 46 | wife | — | Austria |
| 17 | Nicholas Rundy | 22 | son | Laborer | Penna |
| 18 | William Rundy | 19 | son | Laborer | Penna |
| 19 | Helen Rundy | 17 | daughter | — | Penna |
| 20 | Stella Rundy | 16 | daughter | — | Penna |
| 21 | Catherine Rundy | 9 | daughter | — | Penna |
| 22 | Emil Bocko | 55 | lodger | Fire-Man | Russia |
| 23 | Nicholas Martin | 47 | lodger | Laborer | Russia |
| 24 | Michael Bolhus | 46 | lodger | Wrecker | Russia |
| 25 | John Sweeney | 30 | Head | Decorator | Penna |
| 26 | Josephine Sweeney | 30 | wife | Cigarmaker | New Jersey |
| 27 | John Sweeney | 4 | son | — | Penna |
| 28 | Charles Rowan | 68 | lodger | — | Penna |
| 29 | Anna Rowan | 64 | lodger | — | Penna |
| 30 | Harry Welch | 43 | Head | Chauffeur | Penna |
| 31 | Mary Welch THIS PERSON | 39 | wife | — | Germany |
| 32 | Harry Welch | 18 | son | Messenger | Penna |
| 33 | George Welch | 17 | son | Cutter | Penna |
| 34 | Joseph Welch | 15 | son | — | Penna |
| 35 | Mary Welch | 14 | daughter | — | Penna |
| 36 | Francis Welch | 13 | son | — | Penna |
| 37 | Anna Welch | 11 | daughter | — | Penna |
| 38 | Catherine Welch | 9 | daughter | — | Penna |
| 39 | Julia Welch | 8 | daughter | — | Penna |
| 40 | Charles Welch | 7 | son | — | Penna |
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)