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Mary Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Thompson across the 1910, 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 3-person household.
Age 65
b. ~1875
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Thompson |
| Given Name | Mary |
| Relationship to Head | head |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Naturalization Status | Naturalized |
| Additional Details | |
| Industry | H |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Phila |
| Est. Birth Year | ~1875 |
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 Thompson | Head | — | 65 | ~1875 |
| Joseph Thompson | Son | — | 40 | ~1900 |
| Robert Thompson | Son | — | 38 | ~1902 |
Census Appearances
1910
Philadelphia, Pennsylvania
Other, age 28
Philadelphia, Pennsylvania · implied b. ~1882 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Mary |
| Relationship to Head | Daughter-in-law |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 6 |
| Children Born | 0 |
| Children Living | 0 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Philadelphia, Pennsylvania
Other, age 38
Philadelphia, Pennsylvania · implied b. ~1882 — 22 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Mary |
| Relationship to Head | Roomer |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Philadelphia, Pennsylvania
Spouse, age 50
Philadelphia, Pennsylvania · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1901 |
| Age at First Marriage | 19 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Philadelphia-County, Pennsylvania
Head, age 65
Philadelphia-County, Pennsylvania · implied b. ~1875 — 3 household members
| Surname | Thompson |
| Given Name | Mary |
| Relationship to Head | head |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Naturalization Status | Naturalized |
| Industry | H |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Thompson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Thompson
Head · 1940 · age 65 · b. ~1875 · Pennsylvania
★ You are viewing this record
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-t0627-03705-00534)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jennie Hague | 56 | mother | — | Penna |
| 42 | Harry Jr Hague | 22 | brother | Welder | Penna |
| 43 | Frederick Cassidy | 57 | head | Conveyancer | Penna |
| 44 | Clara Cassidy | 50 | wife | — | New Jersey |
| 45 | Albert M Jones | 65 | head | Operator | Penna |
| 46 | Chovellea Jones | 60 | wife | — | Ireland |
| 47 | Mary Thompson THIS PERSON | 65 | head | — | Ireland |
| 48 | Joseph Thompson | 40 | son | Chauffeur | Penna |
| 49 | Robert Thompson | 38 | son | Presser | Penna |
| 50 | Amos Dr Thurston | 78 | head | Medicine | New Jersey |
| 51 | Harriet Thurston | 64 | wife | — | Penna |
| 52 | Homer Thurston | 34 | son | Clerical | Penna |
| 53 | Edgar Dr Clarke | 58 | head | Medicine | Virginia |
| 54 | Ella Clarke | 54 | wife | — | Penna |
| 55 | Charles Walton | 62 | head | Sexton | Penna |
| 56 | Irene Walton | 62 | wife | — | Penna |
| 57 | George Walton | 39 | son | Electrician | Penna |
| 58 | Elizabeth Walton | 31 | wife | — | Penna |
| 59 | Laura D Walton | 11 | daughter | — | Penna |
| 60 | Irene Morris | 30 | head | Investigator | England |
| 61 | Hubert Cayles | 25 | boarder | Grinder | Ohio |
| 62 | Mary Cayles | 26 | boarder | Operator | Penna |
| 63 | Wilfred Whitehead | 37 | head | Pipefitter | Penna |
| 64 | Albert R Rodwell | 47 | head | Painter | Wisconsin |
| 65 | Clara Rodwell | 40 | wife | — | Penna |
| 66 | Allemma Rodwell | 15 | daughter | — | Penna |
| 67 | Albert Rodwell | 7 | son | — | Penna |
| 68 | John Hatton | 80 | head | — | Penna |
| 69 | Joseph Rudholzer | 38 | head | Bleacher | Penna |
| 70 | Clara Rudholzer | 35 | wife | — | Penna |
| 71 | Joseph Jones | 56 | head | Wheelwright | England |
| 72 | Katherine Jones | 57 | wife | — | England |
| 73 | Robert Jones | 24 | son | Salesman | Penna |
| 74 | Irene Jones | 21 | daughter | — | Penna |
| 75 | Victor A Arnold | 22 | son-in-law | Chemist | Penna |
| 76 | Pearl Hughes | 44 | wife | — | Penna |
| 77 | John Hughes | 45 | head | Driver | Penna |
| 78 | Ruth C Hughes | 19 | daughter | Tire-Builder | Penna |
| 79 | Abram Wissinger | 46 | head | — | Penna |
| 80 | Regina Wissinger | 43 | wife | Painter | 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)