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Harry Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Camden-County, New Jersey
Our Model Tree links this Harry Martin across the 1920, 1930 and 1940 US Censuses in Camden-County, New Jersey (XGBoost, ~Confirmed), with identified parents Louis & Emma — first a son (b.~1909), then head of a 7-person household.
Age 31
b. ~1909
Male
Son
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Camden-County, New Jersey |
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Haddonfield |
| 1935 Residence (County) | Camden |
| Additional Details | |
| Occupation | Attendant |
| Industry | Gas station |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 800 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Attendant |
| Township / Ward | Haddonfield |
| Est. Birth Year | ~1909 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Anna Martin | Daughter | — | 29 | ~1911 |
| Emma Martin | Head | — | 58 | ~1882 |
| Harry Martin | Other | — | 6 | ~1934 |
| Shirley Martin | Other | — | 3 | ~1937 |
| Priscilla Martin | Other | — | 25 | ~1915 |
| Harry Martin | Son | — | 31 | ~1909 |
| Joseph Martin | Son | — | 18 | ~1922 |
Census Appearances
1920
Camden, New …
Son, age 12
Camden, New Jersey · implied b. ~1908 — 7 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 | Delaware |
| Mother's Birthplace | Macedonia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Camden, New …
Son, age 22
Camden, New Jersey · 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 | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Germany |
| Occupation | Laborer |
| Industry | Park |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Camden-County, New …
Son, age 31
Camden-County, New Jersey · implied b. ~1909 — 7 household members
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Haddonfield |
| 1935 Residence (County) | Camden |
| Occupation | Attendant |
| Industry | Gas station |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 800 |
| Highest Grade | 8 |
| 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 Harry Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Louis Martin (~0.92 confidence) and mother Emma Martin (~0.92 confidence) and mother Maggie Martin (~0.92 confidence) and mother Emma Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Louis Martin
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Emma Martin
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Maggie Martin
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Emma Martin
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Martin
Son · 1940 · age 31 · b. ~1909 · New Jersey
★ You are viewing this record
Sibling
Joseph Martin
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Martin
Sibling · 1940 · age 29
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 — Camden-County, New Jersey
Open full size
1940 US Federal Census — Camden-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02322-00265)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marion Roberts | 19 | Daughter | New Worker | New Jersey |
| 42 | Paul Roberts | 12 | Son | — | New Jersey |
| 43 | Ada Holloway | 41 | Head | Housewife | New Jersey |
| 44 | Frank Holloway | 24 | Son | Salesman | New Jersey |
| 45 | Thos. J. Hennessy | 31 | Head | Electrician | Pennsylvania |
| 46 | Elizabeth Hennessy | 29 | Wife | Housewife | New Jersey |
| 47 | Thos. Jr. Hennessy | 9 | Son | — | New Jersey |
| 48 | John Hennessy | 3 | Son | — | New Jersey |
| 49 | Elizabeth Mott | 58 | Mother-in-law | Housewife | Pennsylvania |
| 50 | Yerkes Wolverton | 58 | Head | Toolmaker | Pennsylvania |
| 51 | Kathryn Wolverton | 55 | Wife | Housewife | England |
| 52 | Joseph Wolverton | 23 | Son | — | New Jersey |
| 53 | Howard Holloway | 44 | Head | Driver | New Jersey |
| 54 | Daisy Holloway | 43 | Wife | Housewife | New Jersey |
| 55 | Howard Jr. Holloway | 24 | Son | Laborer | New Jersey |
| 56 | Raymond Holloway | 21 | Son | — | New Jersey |
| 57 | Evelyn Holloway | 15 | Daughter | — | New Jersey |
| 58 | Fred Holloway | 12 | Son | — | New Jersey |
| 59 | Benj. Tatum | 49 | Head | Officer | New Jersey |
| 60 | Viola Tatum | 40 | Wife | Housewife | Pennsylvania |
| 61 | Chas. Kneibler | 41 | Head | Cabinet Maker | New Jersey |
| 62 | Ethel Kneibler | 36 | Wife | Housewife | New Jersey |
| 63 | Chas. Jr. Kneibler | 19 | Son | Clerk | New Jersey |
| 64 | Virginia Kneibler | 5 | Daughter | — | New Jersey |
| 65 | Wm. J. Fowler | 26 | Head | Fireman | Pennsylvania |
| 66 | Viola Fowler | 23 | Wife | Filler | Pennsylvania |
| 67 | Benj. Harris | 34 | Brother-in-law | Laborer | New Jersey |
| 68 | Ada Harris | 29 | Sister-in-law | Coat Work | New Jersey |
| 69 | Emma Martin | 58 | Head | Housekeeper | Germany |
| 70 | Harry Martin THIS PERSON | 31 | Son | Attendant | Pennsylvania |
| 71 | Priscilla Martin | 25 | Daughter-in-law | Housekeeper | Pennsylvania |
| 72 | Harry Martin | 6 | Grandson | — | New Jersey |
| 73 | Shirley Martin | 3 | Granddaughter | — | New Jersey |
| 74 | Anna Martin | 29 | Daughter | Waitress | Pennsylvania |
| 75 | Joseph Martin | 18 | Son | Waitress | New Jersey |
| 76 | Edward Cotton | 30 | Head | Fireman | New Jersey |
| 77 | Emma Cotton | 30 | Wife | — | Pennsylvania |
| 78 | Robert Cotton | 6 | Son | — | New Jersey |
| 79 | Louise Cotton | 5 | Daughter | — | New Jersey |
| 80 | Charles Cotton | 4 | Son | — | New Jersey |
Pedigree Summary
Harry + 2 siblings
Gen 1 · 4 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)