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Harry Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Harry Martin across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & Katharine — first a head (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Guard |
| Industry | Fed. Res. Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | H 4 |
| 1935 Residence | Penna |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Guard |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1908 |
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 Harry | Age | Birth yr |
|---|---|---|---|---|
| Harry Martin | Head | — | 32 | ~1908 |
| Harry Martin | Son | — | 6 | ~1934 |
| Elizabeth Martin | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 12
Philadelphia, Pennsylvania · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Son, age 23
Philadelphia, Pennsylvania · implied b. ~1907 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| 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
Philadelphia-County, Pennsylvania
Head, age 32
Philadelphia-County, Pennsylvania · implied b. ~1908 — 3 household members
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Philadelphia |
| Occupation | Guard |
| Industry | Fed. Res. Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | H 4 |
| 1935 Residence | Penna |
| 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 Harry Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Martin (~0.92 confidence) and mother Katharine Martin (~0.92 confidence) and father Joseph Martin (~0.92 confidence) and mother Margaret Martin (~0.60 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.84
Father
John Martin
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Katharine Martin
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
Joseph Martin
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Margaret Martin
b. ~1896
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Harry Martin
Head · 1940 · age 32 · b. ~1908 · 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
30 people indexed on this census page (nara:1940:m-t0627-03712-00506)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert P. Sechler | 36 | Head | Teacher | Penna |
| 2 | Aileen P. Sechler | 28 | Wife | — | Texas |
| 9 | Harry H. Tucker | 73 | Head | Representative | England |
| 10 | Margaret A. Tucker | 71 | Wife | — | New York |
| 11 | Margaret A. Tucker | 42 | Daughter | Librarian | New Jersey |
| 12 | Frederick J. Parsons | 48 | Head | Salesman | New York |
| 13 | Ruth Parsons | 40 | Wife | Secretary | Maine |
| 14 | Angelina Stacey | 24 | Head | — | Pennsylvania |
| 15 | Robert Whann | 34 | Head | Weighmaster | Penna |
| 16 | Helen Whann | 32 | Wife | — | Penna |
| 17 | Audrey Whann | 2 | Daughter | — | Penna |
| 18 | Martha Weitz | 59 | Mother-in-law | — | Penna |
| 19 | William Keil | 55 | Lodger | Kitchen Man | Penna |
| 20 | Kenneth Byers | 34 | Lodger | Clerk | New York |
| 21 | Robert Acton | 27 | Head | Candymaker | Pennsylvania |
| 22 | Margaret Acton | 23 | Wife | — | New York |
| 23 | Robert Jr. Acton | 3 | Son | — | Pennsylvania |
| 24 | Samuel Worrall | 26 | Head | Salesman | Pennsylvania |
| 25 | Elizabeth Worrall | 24 | Wife | — | Pennsylvania |
| 26 | Jeannette Worrall | 1 | Daughter | — | Pennsylvania |
| 27 | Ida Whelan | 47 | Head | — | Pennsylvania |
| 28 | John (Ab) Whelan | 22 | Son | — | Pennsylvania |
| 29 | James Whelan | 20 | Son | Laborer | Pennsylvania |
| 30 | Robert Whelan | 15 | Son | — | Pennsylvania |
| 31 | Beatrice Whelan | 12 | Daughter | — | Pennsylvania |
| 32 | Loretta Whelan | 9 | Daughter | — | Pennsylvania |
| 33 | Leonard Whelan | 7 | Son | — | Pennsylvania |
| 34 | Harry Martin THIS PERSON | 32 | Head | Guard | Pennsylvania |
| 35 | Elizabeth Martin | 31 | Wife | Gen. Clerk | Pennsylvania |
| 36 | Harry Jr. Martin | 6 | Son | — | Pennsylvania |
Related Census Records
Pedigree Summary
Harry
Gen 1 · 4 parents
~0.84
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)