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John Kerr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this John Kerr across the 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | Kerr |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Hamilton |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Hamilton |
| Est. Birth Year | ~1925 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Kerr | Son | — | 15 | ~1925 |
| Veronica Kerr | Daughter | — | 13 | ~1927 |
| Joseph Kerr | Son | — | 12 | ~1928 |
| William Kerr | Son | — | 24 | ~1916 |
| William Kerr | Head | — | 56 | ~1884 |
| Anna Kerr | Daughter | — | 26 | ~1914 |
| Edward Kerr | Son | — | 17 | ~1923 |
| Anna Kerr | Spouse | — | 52 | ~1888 |
Census Appearances
1930
Mercer, New …
Son, age 5
Mercer, New Jersey · implied b. ~1925 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kerr |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| 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 |
1940
Mercer-County, New …
Son, age 15
Mercer-County, New Jersey · implied b. ~1925 — 8 household members
| Surname | Kerr |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Hamilton |
| 1935 Residence (County) | Mercer |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| 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 John Kerr across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Kerr
Son · 1940 · age 15 · b. ~1925 · New Jersey
★ You are viewing this record
Sibling
Veronica Kerr
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Kerr
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Kerr
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Kerr
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Kerr
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 — 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-t0627-02356-00800)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Olga Walloy | 26 | wife | — | New Jersey |
| 42 | Edward Walloy | 8 | son | — | New Jersey |
| 43 | Patricia Walloy | 7 | daughter | — | New Jersey |
| 44 | Robert Walloy | 3 | son | — | New Jersey |
| 45 | Ellen Walloy | 1 | daughter | — | New Jersey |
| 46 | Mary Bailey | 36 | Head | Cigar Maker | New Jersey |
| 47 | Mae Bailey | 12 | daughter | — | New Jersey |
| 48 | Frank Bailey | 29 | Brother | Electrician | New Jersey |
| 49 | Eva Bailey | 66 | Grand Mother | — | Germany |
| 50 | Dillon Garry | 32 | Boarder | Painter | New Jersey |
| 51 | Leon Terlinski | 62 | Head | Butcher | Poland |
| 52 | Helen Terlinski | 60 | wife | — | Poland |
| 53 | Virginia Terlinski | 22 | daughter | Cigar Maker | New Jersey |
| 54 | Helen Terlinski | 19 | daughter | Clerk | New Jersey |
| 55 | Herbert Brooks | 50 | Head | Machinist | New York |
| 56 | Sarah Brooks | 51 | wife | — | New York |
| 57 | Herbert Jr Brooks | 21 | son | Iron Worker | New Jersey |
| 58 | Dorothy Brooks | 22 | daughter | — | New Jersey |
| 59 | William Ritter | 55 | Head | — | New Jersey |
| 60 | Lena Ritter | 53 | wife | — | New Jersey |
| 61 | William Ritter | 17 | son | — | New Jersey |
| 62 | Laura Ritter | 15 | daughter | — | New Jersey |
| 63 | Wm Hammerschmidt | 57 | Head | Repair Man | Pennsylvania |
| 64 | Martha Hammerschmidt | 55 | wife | — | Germany |
| 65 | Herman Hammerschmidt | 25 | son | Wire Roller | New Jersey |
| 66 | Anna Hammerschmidt | 17 | daughter | New Worker | New Jersey |
| 67 | William Kerr | 56 | Head | Machinist | Pennsylvania |
| 68 | Anna Kerr | 52 | wife | — | Germany |
| 69 | Anna Kerr | 26 | daughter | Coil Wrapper | New Jersey |
| 70 | William Jr Kerr | 24 | son | Sign Builder | New Jersey |
| 71 | Edward Kerr | 17 | son | — | New Jersey |
| 72 | John Kerr THIS PERSON | 15 | son | — | New Jersey |
| 73 | Veronica Kerr | 13 | daughter | — | New Jersey |
| 74 | Joseph Kerr | 12 | son | — | New Jersey |
| 75 | Walter Hayes | 47 | Head | Sign Builder | New Jersey |
| 76 | Sallie Hayes | 46 | wife | — | New Jersey |
| 77 | Walter Hayes | 19 | son | — | New Jersey |
| 78 | John Farhszwski | 46 | Head | Mechanic | New Jersey |
| 79 | Helen Farhszwski | 44 | wife | Maid | Pennsylvania |
| 80 | Clarence Wagner | 40 | Head | Maintenance | Pennsylvania |
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)