WM
William Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this William Martin across the 1920, 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed), with identified parents John & William — first a son (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Martin |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Irvington |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Clerical Worker |
| Industry | Life Ins Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1820 |
| Highest Grade | H 1 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Clerical Worker |
| Township / Ward | Irvington |
| Est. Birth Year | ~1916 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Joan Martin | Daughter | — | 3 | ~1937 |
| Margaret Martin | Daughter | — | 5 | ~1935 |
| Thomas Petroll | Head | — | 36 | ~1904 |
| Otto Henninger | Other | — | 65 | ~1875 |
| William Martin | Son | — | 24 | ~1916 |
| Genevieve Petroll | Spouse | — | 30 | ~1910 |
Census Appearances
1920
Essex, New …
Son, age 3
Essex, New Jersey · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Essex, New …
Son, age 13
Essex, New Jersey · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Son, age 24
Essex-County, New Jersey · implied b. ~1916 — 6 household members
| Surname | Martin |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Irvington |
| 1935 Residence (County) | Essex |
| Occupation | Clerical Worker |
| Industry | Life Ins Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1820 |
| Highest Grade | H 1 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 William 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 father William Martin (~0.92 confidence) and mother Mary Martin (~0.92 confidence) and father Thomas Petroll (~0.60 confidence) and mother Genevieve Petroll (~0.60 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.79
Father
John Martin
b. ~1877
Source father
● Household
· direct · ~0.92
Father
William Martin
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Mary Martin
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
Thomas Petroll
b. ~1904
Source father
● Household
· direct · ~0.6
Mother
Genevieve Petroll
b. ~1910
Source mother
● Household
· direct · ~0.6
This person
Anchor record
William Martin
Son · 1940 · age 24 · b. ~1916 · New Jersey
★ You are viewing this record
Sibling
Margaret Martin
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Martin
Sibling · 1940 · age 3
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 — Essex-County, New Jersey
Open full size
1940 US Federal Census — Essex-County, New Jersey
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02335-00039)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mollie Kuchen | 51 | Wife | — | New Jersey |
| 42 | Charles Kuchen | 26 | Son | Waiter | New Jersey |
| 43 | Thomas Petroll | 36 | Head | Chauffeur | New Jersey |
| 44 | Genevieve Petroll | 30 | Wife | — | New Jersey |
| 45 | Margaret Martin | 5 | Daughter | — | New Jersey |
| 46 | Joan Martin | 3 | Daughter | — | New Jersey |
| 47 | William Martin THIS PERSON | 24 | Son | Clerical Worker | New Jersey |
| 48 | Otto Henninger | 65 | Lodger | Distributing | New Jersey |
| 49 | Monte Kamarasky | 31 | Head | Tile Layer | New Jersey |
| 50 | Elizabeth Kamarasky | 33 | Wife | Checker | New York |
| 51 | Albert Lance | 24 | Head | Shipping Clerk | New Jersey |
| 52 | Eleanor Lance | 21 | Wife | — | New Jersey |
| 53 | Eleanor Lance | 1 | Daughter | — | New Jersey |
| 54 | Margaret Lance | 58 | Mother | — | New Jersey |
| 55 | William Mueller | 63 | Head | Driver | New Jersey |
| 56 | Anna Mueller | 57 | Wife | — | New Jersey |
| 57 | William Jr Mueller | 30 | Son | Laborer | New Jersey |
| 58 | Florence Mueller | 26 | Daughter | Mender | New Jersey |
| 60 | David Ring | 59 | Head | Salesman | Hungary |
| 61 | Josephine Ring | 55 | Wife | — | Hungary |
| 62 | Behela|Bekela Ring | 28 | Daughter | Childrens Nurse | New Jersey |
| 63 | Harry K Ring | 22 | Son | — | New Jersey |
| 64 | Otto Duegan | 38 | Head | Polisher | Germany |
| 65 | Margaret Duegan | 33 | Wife | Houseworker | Germany |
| 66 | Mary Ann Duegan | 4 | Daughter | — | New Jersey |
| 67 | Emily Duegan | 60 | Mother | — | Germany |
| 68 | James A Crawford | 61 | Head | — | New Jersey |
| 69 | Clara Crawford | 71 | Wife | — | New Jersey |
| 70 | Margaret Buechle | 68 | Head | — | Germany |
| 71 | Helen Myers | 35 | Daughter | Beautician | New Jersey |
| 72 | Elaine Myers | 15 | Daughter | — | New Jersey |
| 73 | Raymond Myers | 10 | Son | — | New Jersey |
| 74 | Alexander Matejka | 46 | Head | Laborer | Bohemia |
| 75 | Marie Matejka | 44 | Wife | — | Bohemia |
| 76 | Alexander Jr Matejka | 10 | Son | — | New Jersey |
| 77 | Fred Bacher | 50 | Lodger | Mechanic | Switzerland |
| 78 | Phillip Menger | 59 | Head | Manufacturer | Roumania |
| 79 | Elizabeth Menger | 51 | Wife | Helps In Business | New York |
| 80 | Edward Young | 69 | Head | Janitor | New Jersey |
Pedigree Summary
William + 2 siblings
Gen 1 · 5 parents
~0.79
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)