WM
William Mueller — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this William Mueller across the 1910, 1920, 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1910), then head of a 4-person household.
Age 30
b. ~1910
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Mueller |
| Given Name | William Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Irvington |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Laborer |
| Industry | Airplane Parts |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 736 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Laborer |
| Township / Ward | Irvington |
| Est. Birth Year | ~1910 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Mueller | Head | — | 63 | ~1877 |
| William Mueller | Son | — | 30 | ~1910 |
| Anna Mueller | Spouse | — | 57 | ~1883 |
| Florence Mueller | Daughter | — | 26 | ~1914 |
Census Appearances
1910
Essex, New …
Son, age
Essex, New Jersey · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | William Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| 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 |
1920
Essex, New …
Son, age 9
Essex, New Jersey · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | William Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Essex, New …
Son, age 18
Essex, New Jersey · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | William Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Musician |
| Industry | Orchestra |
| 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 30
Essex-County, New Jersey · implied b. ~1910 — 4 household members
| Surname | Mueller |
| Given Name | William Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Irvington |
| 1935 Residence (County) | Essex |
| Occupation | Laborer |
| Industry | Airplane Parts |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 736 |
| Highest Grade | No 8 |
| 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 Mueller across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Mueller (~0.92 confidence) and father William Mueller (~0.92 confidence) and father William Mueller (~0.92 confidence) and father William Mueller (~0.92 confidence) and mother Anna Mueller (~0.92 confidence) and mother Anna Mueller (~0.92 confidence) and mother Lizzie Mueller (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Mueller
b. ~1877
Source father
● Household
· direct · ~0.92
Father
William Mueller
b. ~1878
Source father
● Household
· direct · ~0.92
Father
William Mueller
b. ~1878
Source father
● Household
· direct · ~0.92
Father
William Mueller
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Anna Mueller
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Anna Mueller
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Lizzie Mueller
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mueller
Son · 1940 · age 30 · b. ~1910 · New Jersey
★ You are viewing this record
Sibling
Florence Mueller
Sibling · 1940 · age 26
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 | 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 THIS PERSON | 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 + 1 sibling
Gen 1 · 7 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)