JD
John Dunn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this John Dunn across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1914), then head of a 6-person household.
Age 26
b. ~1914
Male
Son
Born: Penna
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Dunn |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Penna |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
| Township / Ward | Phila |
| Est. Birth Year | ~1914 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Vera Dunn | Daughter | — | 25 | ~1915 |
| Dolores Dunn | Daughter | — | 17 | ~1923 |
| Anna Dunn | Head | — | 49 | ~1891 |
| John Gralow | Other | — | 31 | ~1909 |
| James Dunn | Son | — | 25 | ~1915 |
| John Dunn | Son | — | 26 | ~1914 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 5
Philadelphia, Pennsylvania · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | John Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Penna |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1930
Philadelphia, Pennsylvania
Son, age 14
Philadelphia, Pennsylvania · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | John J. P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Penna |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1940
Philadelphia-County, Pennsylvania
Son, age 26
Philadelphia-County, Pennsylvania · implied b. ~1914 — 6 household members
| Surname | Dunn |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Penna |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
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 John Dunn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Dunn (~0.92 confidence) and father John Dunn (~0.92 confidence) and mother Ida Dunn (~0.92 confidence) and mother Anna Dunn (~0.92 confidence) and mother Elizabeth Dunn (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Dunn
b. ~1889
Source father
● Household
· direct · ~0.92
Father
John Dunn
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Ida Dunn
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Anna Dunn
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Dunn
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Dunn
Son · 1940 · age 26 · b. ~1914 · Pennsylvania
★ You are viewing this record
Sibling
Dolores Dunn
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Dunn
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vera Dunn
Sibling · 1940 · age 25
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 — 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-t0627-03756-00844)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mae Meely | 48 | daughter | — | Delaware |
| 42 | Warren Meely | 43 | son | Salesman | Penna |
| 43 | Fred Swift | 53 | head | Musician | Penna |
| 44 | Kathleen Swift | 43 | wife | Cosmetologist | Australia |
| 45 | Anna Dunn | 49 | head | — | Penna |
| 46 | Vera Dunn | 25 | daughter | Telephone Operator | Penna |
| 47 | John Dunn THIS PERSON | 26 | son | — | Penna |
| 48 | James Dunn | 25 | son | Multigraph Operator | Penna |
| 49 | Dolores Dunn | 17 | daughter | — | Penna |
| 50 | John Gralow | 31 | boarder | Messenger | Penna |
| 51 | James L. Feiler | 58 | head | Guard | Penna |
| 52 | Mary M. Feiler | 58 | wife | — | Penna |
| 53 | George Feiler | 19 | son | Clerk | Penna |
| 54 | Dorothy Feiler | 15 | daughter | Secretary | Penna |
| 55 | Adolphine Mamee | 60 | head | — | Belgium |
| 56 | Marguerite Mamee | 34 | daughter | Clerk | Penna |
| 57 | Jeanne Mamee | 32 | daughter | Clerk | Penna |
| 58 | Josephine Mamee | 25 | daughter | Draftsman | Penna |
| 59 | John Giroux | 65 | lodger | — | France |
| 60 | Louise Giroux | 64 | lodger | — | Penna |
| 61 | George Lyon | 43 | head | Maintenance Man | Penna |
| 62 | Marguerite Lyon | 40 | wife | — | Penna |
| 63 | Gertrude Leary | 33 | lodger | Soda Clerk | Penna |
| 64 | Marguerite Lyon | 15 | daughter | — | Penna |
| 65 | George Lyon | 7 | son | — | Penna |
| 66 | Anna Lavelle | 80 | lodger | — | Irish Fr. State |
| 67 | Samuel Copeland | 66 | head | — | Penna |
| 68 | Emily Copeland | 60 | wife | Storekeeper | Penna |
| 69 | Oliver Hammond | 41 | son in law | Estimator | Penna |
| 70 | Mary Hammond | 37 | daughter | Secretary | Penna |
| 71 | James Copeland | 34 | son | Printer | Penna |
| 72 | Lester Spangenberg | 52 | head | Mill Supply Buyer | Penna |
| 73 | Agnes Spangenberg | 42 | wife | — | Penna |
| 74 | Agnes Spangenberg | 20 | daughter | Comptometer Operator | Penna |
| 75 | Marguerite Spangenberg | 15 | daughter | — | Penna |
| 76 | Richard Spangenberg | 6 | son | — | Penna |
| 77 | James B. Hughes | 61 | head | General Contractor | Penna |
| 78 | Juliette Hughes | 61 | wife | — | Belgium |
| 79 | Josephine Hughes | 31 | daughter | Stenographer | Penna |
| 80 | Joseph Hughes | 29 | son | Advertising Artist | Penna |
Pedigree Summary
John + 3 siblings
Gen 1 · 5 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)