WM
William Mullen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this William Mullen across the 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 8-person household.
Age 18
b. ~1922
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Mullen |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Newark City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Delivery Boy |
| Industry | Motor Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 624 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Delivery Boy |
| Township / Ward | Newark City |
| Est. Birth Year | ~1922 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Mullen | Daughter | — | 13 | ~1927 |
| Helen Mullen | Spouse | — | 51 | ~1889 |
| Joseph Mullen | Son | — | 16 | ~1924 |
| Robert Mullen | Son | — | 9 | ~1931 |
| John Mullen | Son | — | 11 | ~1929 |
| Charles Mullen | Head | — | 49 | ~1891 |
| Charles Mullen | Son | — | 20 | ~1920 |
| William Mullen | Son | — | 18 | ~1922 |
Census Appearances
1930
Essex, New …
Son, age 7
Essex, New Jersey · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mullen |
| Given Name | William A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Title Searcher |
| Industry | Mortgage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Son, age 18
Essex-County, New Jersey · implied b. ~1922 — 8 household members
| Surname | Mullen |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Newark City |
| 1935 Residence (County) | Essex |
| Occupation | Delivery Boy |
| Industry | Motor Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 624 |
| Highest Grade | Hs 4 |
| 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 Mullen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mullen
Son · 1940 · age 18 · b. ~1922 · New Jersey
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Sibling
Joseph Mullen
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mullen
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mullen
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mullen
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mullen
Sibling · 1940 · age 11
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
40 people indexed on this census page (nara:1940:m-t0627-02424-00677)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Florence Reilly | 15 | Daughter | — | New Jersey |
| 42 | Edward Reilly | 9 | Son | — | New Jersey |
| 43 | Eugene Reilly | 10 | Son | — | New Jersey |
| 44 | Harry Vitero | 40 | Head | Iron Worker | New Jersey |
| 45 | Caroline Vitero | 34 | Wife | — | New Jersey |
| 46 | Lillian Vitero | 17 | Daughter | — | New Jersey |
| 47 | Harvey Vitero | 15 | Son | — | New Jersey |
| 48 | June Vitero | 14 | Daughter | — | New Jersey |
| 49 | Alice Vitero | 10 | Daughter | — | New Jersey |
| 50 | Jack Vitero | 5 | Son | — | New Jersey |
| 51 | Archie Vitero | 2 | Daughter | — | New Jersey |
| 52 | Joyce Vitero | 1 | Daughter | — | New Jersey |
| 53 | Fred Marshall | 61 | Boarder | Engineer | New Jersey |
| 54 | John Jensen | 45 | Head | Tool Maker | Germany |
| 55 | Bertha Jensen | 45 | Wife | — | Germany |
| 56 | J. Henry Jensen | 20 | Son | Office Clerk | Germany |
| 57 | John Vandick | 37 | Head | Painter | New Jersey |
| 58 | Eleanor Vandick | 14 | Daughter | — | New Jersey |
| 59 | John Jr. Vandick | 5 | Son | — | New Jersey |
| 60 | John Ambielli | 61 | Head | Salesman | Jersey City |
| 61 | Elizabeth Ambielli | 49 | Wife | — | Ireland |
| 62 | Robert Ambielli | 19 | Son | — | New Jersey |
| 63 | John O'Donnell | 27 | Son | Salesman | New Jersey |
| 64 | Thomas Willis | 42 | Head | Rodman | Jersey City |
| 65 | Mildred Willis | 30 | Wife | — | Maryland |
| 66 | Thomas Willis | 5 | Son | — | New Jersey |
| 67 | John Willis | 1 | Son | — | New Jersey |
| 68 | Paul Kamesella | 65 | Head | — | Italy |
| 69 | Rosita Kamesella | 60 | Wife | — | Italy |
| 70 | Charles Mullen | 49 | Head | Machine Operator | New York |
| 71 | Helen Mullen | 51 | Wife | — | New Jersey |
| 72 | Charles Mullen | 20 | Son | Clerk | New Jersey |
| 73 | William Mullen THIS PERSON | 18 | Son | Delivery Boy | New Jersey |
| 74 | Joseph Mullen | 16 | Son | — | New Jersey |
| 75 | Elizabeth Mullen | 13 | Daughter | — | New Jersey |
| 76 | John Mullen | 11 | Son | — | New Jersey |
| 77 | Robert Mullen | 9 | Son | — | New Jersey |
| 78 | Michael Vanza | 22 | Head | Peddler | New Jersey |
| 79 | Eleanor Vanza | 20 | Wife | — | New Jersey |
| 80 | Eleanor Vanza | 2 | Daughter | — | New Jersey |
Related Census Records
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)