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William Kelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this William Kelly across the 1920, 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1906), then head of a 3-person household.
Age 34
b. ~1906
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | Kelly |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Occupation | Prison Officer |
| Industry | State Prison N.J. Dept of Inst. & Ag. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 114 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Prison Officer |
| Township / Ward | Trenton City |
| Est. Birth Year | ~1906 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| William Kelly | Head | — | 34 | ~1906 |
| William Kelly | Son | — | 1 | ~1939 |
| Dorothy Kelly | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Mercer, New …
Son, age 13
Mercer, New Jersey · implied b. ~1907 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| 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 | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Mercer, New …
Son, age 24
Mercer, New Jersey · implied b. ~1906 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 22 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Pennsylvania |
| Occupation | carpenter |
| Industry | general |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Mercer-County, New …
Head, age 34
Mercer-County, New Jersey · implied b. ~1906 — 3 household members
| Surname | Kelly |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Occupation | Prison Officer |
| Industry | State Prison N.J. Dept of Inst. & Ag. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 114 |
| Highest Grade | H-2 |
| 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 Kelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Kelly (~0.92 confidence) and father John Kelly (~0.92 confidence) and mother Violet Kelly (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Kelly
b. ~1873
Source father
● Household
· direct · ~0.92
Father
John Kelly
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Violet Kelly
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Kelly
Head · 1940 · age 34 · b. ~1906 · New Jersey
★ 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 — Mercer-County, New Jersey
Open full size
1940 US Federal Census — Mercer-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02434-00159)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Julia Walsh | 50 | Head | Laundress | Irish Free State |
| 2 | Martin Joseph Henry | 47 | Head | Plumber | Irish Free State |
| 3 | Ellen Henry | 46 | Wife | — | Irish Free State |
| 4 | John Francis Henry | 11 | Son | — | New Jersey |
| 5 | William Daniel Henry | 8 | Son | — | New Jersey |
| 6 | John A. Dooling | 53 | Lodger | Clerk | New Jersey |
| 7 | Mary Frances Beatty | 60 | Lodger | — | Scotland |
| 8 | William Mcmanus | 27 | Lodger | Salesman | Trenton N.J. |
| 9 | Forest Strange | 28 | Head | Gas Station Attendant | Indiana |
| 10 | Ann Strange | 20 | Wife | — | Pennsylvania |
| 11 | Philipp Fuerling | 46 | Head | Chauffeur | New York |
| 12 | Helene Fuerling | 34 | Wife | Lodging House | New Jersey |
| 13 | Philip V. Fuerling | 4 | Son | — | New Jersey |
| 14 | Catherine Mcmanus | 62 | Lodger | Nursing | Canada English |
| 15 | Mary Mcmanus | 66 | Lodger | Supervisor | Canada English |
| 16 | James Jamieson | 66 | Lodger | Bartender | Scotland |
| 17 | John Raherty | 48 | Lodger | Maintenance Foreman | New Jersey |
| 18 | John N. Smith | 44 | Lodger | Stone Cutter | Louisiana |
| 19 | John Noon | 64 | Lodger | Blacksmith Helper | New York |
| 20 | Nick Treephis | 38 | Head | Proprietor | Chios (Is) |
| 21 | Lena Treephis | 25 | Wife | — | Chios (Is) |
| 22 | Marina Treephis | 5 | Daughter | — | New Jersey |
| 23 | Elaine Treephis | 3 | Daughter | — | New Jersey |
| 24 | Irene Fotis | 54 | Mother | — | Chios (Is) |
| 25 | Peter Fotis | 16 | Son | Truck Driver | Chios (Is) |
| 26 | Herbert Swetnam | 64 | Head | — | New Jersey |
| 27 | Florence Swetnam | 52 | Wife | — | Pennsylvania |
| 28 | Margaret Kaefer | 55 | Head | — | New Jersey |
| 29 | John D. Stockton | 66 | Lodger | Salesman | New Jersey |
| 30 | Mary Eliz Reighard | 22 | Lodger | Waitress | Pennsylvania |
| 31 | Dr. Frank Harris | 63 | Head | Medical Doctor | New Jersey |
| 32 | Katherine Harris | 47 | Wife | — | New Jersey |
| 33 | Katherine Gloria Harris | 14 | Daughter | — | New Jersey |
| 34 | Mayard Leonard Fell | 24 | Step Son | Salesman (Copy Boying) | New Jersey |
| 35 | Lillian May Fell | 20 | Step Daughter | Sales Girl | New Jersey |
| 36 | William Kelly THIS PERSON | 34 | Head | Prison Officer | New Jersey |
| 37 | Dorothy Kelly | 27 | Wife | — | New Jersey |
| 38 | William Jr. Kelly | 1 | Son | — | New Jersey |
| 39 | Earle Jefferies | 57 | Head | Banker | New Jersey |
| 40 | Martin Reikes | 31 | Head | Pharmacist | Poland |
Pedigree Summary
William
Gen 1 · 3 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)