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John Keller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lancaster-County, Pennsylvania
Our Model Tree links this John Keller across the 1930 and 1940 US Censuses in Lancaster-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 15-person household.
Age 15
b. ~1925
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lancaster-County, Pennsylvania |
| Surname | Keller |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lancaster City |
| 1935 Residence (County) | Lancaster |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Lancaster City |
| 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.
15 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Melva Keller | Daughter | — | 5 | ~1935 |
| Lucille Keller | Daughter | — | 12 | ~1928 |
| Margaret Keller | Daughter | — | 11 | ~1929 |
| Florence Farrell | Daughter | — | 23 | ~1917 |
| Harry Keller | Head | — | 45 | ~1895 |
| Gerald Farrell | Other | — | 2 | ~1938 |
| Gerald Farrell | Other | — | 29 | ~1911 |
| Margaret Farrell | Other | — | ~1940 | |
| George Keller | Son | — | 13 | ~1927 |
| Robert Keller | Son | — | 19 | ~1921 |
| Charles Keller | Son | — | 17 | ~1923 |
| Ronald Keller | Son | — | 7 | ~1933 |
| Earnest Keller | Son | — | 10 | ~1930 |
| John Keller | Son | — | 15 | ~1925 |
| Margaret Keller | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Lancaster, Pennsylvania
Son, age 5
Lancaster, Pennsylvania · implied b. ~1925 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keller |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lancaster-County, Pennsylvania
Son, age 15
Lancaster-County, Pennsylvania · implied b. ~1925 — 15 household members
| Surname | Keller |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lancaster City |
| 1935 Residence (County) | Lancaster |
| Highest Grade | H-1 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Keller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Keller
Son · 1940 · age 15 · b. ~1925 · Pennsylvania
★ You are viewing this record
Sibling
Margaret Keller
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ronald Keller
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Keller
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Farrell
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Keller
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melva Keller
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Keller
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Keller
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earnest Keller
Sibling · 1940 · age 10
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 — Lancaster-County, Pennsylvania
Open full size
1940 US Federal Census — Lancaster-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03530-00312)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry Muller | 53 | Head | Fire Chief | Pennsylvania |
| 2 | Esther E Muller | 42 | Sister | Operator | Pennsylvania |
| 3 | Anna Heigle | 65 | Boarder | Waitress | Pennsylvania |
| 4 | Richard Alton | 41 | Head | Laborer | Pennsylvania |
| 5 | Mabel Alton | 39 | Wife | — | Pennsylvania |
| 6 | Marion Alton | 15 | Daughter | — | Pennsylvania |
| 7 | Richard Alton | 14 | Son | — | Pennsylvania |
| 8 | Leverna Alton | 13 | Daughter | — | Pennsylvania |
| 9 | Patsy Alton | 11 | Daughter | — | Pennsylvania |
| 10 | Harry Keller | 45 | Head | Truck Driver | Pennsylvania |
| 11 | Margaret Keller | 40 | Wife | — | Pennsylvania |
| 12 | Robert Keller | 19 | Son | Tipper | Pennsylvania |
| 13 | Charles Keller | 17 | Son | Web Worker | Pennsylvania |
| 14 | John Keller THIS PERSON | 15 | Son | — | Pennsylvania |
| 15 | George Keller | 13 | Son | — | Pennsylvania |
| 16 | Lucille Keller | 12 | Daughter | — | Pennsylvania |
| 17 | Margaret Keller | 11 | Daughter | — | Pennsylvania |
| 18 | Earnest Keller | 10 | Son | — | Pennsylvania |
| 19 | Ronald Keller | 7 | Son | — | Pennsylvania |
| 20 | Melva Keller | 5 | Daughter | — | Pennsylvania |
| 21 | Gerald Farrell | 29 | Son-in-law | Caretaker | New Jersey |
| 22 | Florence Farrell | 23 | Daughter | — | Pennsylvania |
| 23 | Gerald J Farrell | 2 | Grand-son | — | Pennsylvania |
| 24 | Margaret Farrell | 0 | Grand-daughter | — | Pennsylvania |
| 25 | Charles Wolf | 43 | Head | Laborer | Pennsylvania |
| 26 | Catherine Wolf | 41 | Wife | — | Pennsylvania |
| 27 | Helen Wolf | 18 | Daughter | — | Pennsylvania |
| 28 | Charles Jr Wolf | 16 | Son | — | Pennsylvania |
| 29 | Herbert Wolf | 11 | Son | — | Pennsylvania |
| 30 | Betty Jane Wolf | 9 | Daughter | — | Pennsylvania |
| 31 | Robert Wolf | 6 | Son | — | Pennsylvania |
| 32 | Jacqueline Wolf | 3 | Daughter | — | Pennsylvania |
| 33 | Harry Kiehl | 60 | Head | Painter | Pennsylvania |
| 34 | George Kiehl | 35 | Son | Attendant | Pennsylvania |
| 35 | Raymond Kiehl | 33 | Son | Caretaker | Pennsylvania |
| 36 | Jacob Kiehl | 27 | Son | Laborer | Pennsylvania |
| 37 | Catherine Walters | 27 | Housekeeper | Housekeeper | Pennsylvania |
| 38 | Roy Bisking | 34 | Head | Moulder | Pennsylvania |
| 39 | Josephine Bisking | 34 | Wife | — | Pennsylvania |
| 40 | Roy Jr Bisking | 6 | Son | — | 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)