JC
John Christian — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this John Christian across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 10-person household.
Age 25
b. ~1915
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Christian |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Laborer |
| Industry | General |
| Class of Worker | PW |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1915 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Carl Christian | Son | — | 19 | ~1921 |
| Elizabeth Christian | Daughter | — | 13 | ~1927 |
| Jenny Christian | Spouse | — | 43 | ~1897 |
| Agnes Christian | Daughter | — | 16 | ~1924 |
| John Christian | Son | — | 25 | ~1915 |
| George Christian | Head | — | 47 | ~1893 |
| Louis Christian | Son | — | 23 | ~1917 |
| Joseph Christian | Son | — | 11 | ~1929 |
| Albert Christian | Son | — | 21 | ~1919 |
| Marie Christian | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age 15
Philadelphia, Pennsylvania · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cristiano |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Son, age 25
Philadelphia-County, Pennsylvania · implied b. ~1915 — 10 household members
| Surname | Christian |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Occupation | Laborer |
| Industry | General |
| Class of Worker | PW |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Christian across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Christian
Son · 1940 · age 25 · b. ~1915 · Pennsylvania
★ You are viewing this record
Sibling
Louis Christian
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Christian
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Christian
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Christian
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Christian
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Christian
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Christian
Sibling · 1940 · age 21
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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03697-00323)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Houston | 25 | Head | Shipper | Pennsylvania |
| 42 | Naomi Houston | 23 | Wife | — | Pennsylvania |
| 43 | Frederick Naab | 56 | Head | Tool Maker | Pennsylvania |
| 44 | Christine Naab | 52 | Wife | — | Pennsylvania |
| 45 | Frederick Jr Naab | 25 | Son | Clerk | Pennsylvania |
| 46 | Gerard Naab | 23 | Son | Designer | Pennsylvania |
| 47 | Beatrice Naab | 15 | Daughter | — | Pennsylvania |
| 48 | John Naab | 13 | Son | — | Pennsylvania |
| 49 | Theresa Naab | 5 | Daughter | — | Pennsylvania |
| 50 | William Eisele | 57 | Head | Printer | Pennsylvania |
| 51 | Anna Eisele | 54 | Wife | — | Pennsylvania |
| 52 | Roman Eisele | 32 | Son | Foreman | Pennsylvania |
| 53 | Sophie Fretz | 60 | Head | — | Pennsylvania |
| 54 | Priscilla Bakers | 69 | Lodger | — | Pennsylvania |
| 55 | Rose Kelly | 37 | Head | Sales Lady | Pennsylvania |
| 56 | Mary Kelly | 42 | Sister | Sales Lady | Pennsylvania |
| 57 | Mary Donnelly | 58 | Head | Carpet Weaver | Pennsylvania |
| 58 | Cecelia Donnelly | 46 | Sister | — | Pennsylvania |
| 59 | Edward J Hagen | 47 | Cousin | Bartender | Pennsylvania |
| 60 | Anna Mcquillian | 57 | Head | Candy Manufacturer | N. Ireland |
| 61 | Frank Duyx | 30 | Head | Plumber | Pennsylvania |
| 62 | Christine Duyx | 61 | Mother | — | Pennsylvania |
| 63 | Raythen Duyx | 33 | Sister | — | Pennsylvania |
| 64 | Josephine Parker | 61 | Head | — | N. Ireland |
| 65 | Thomas Brennan | 65 | Head | — | Pennsylvania |
| 66 | Margaret Brennan | 57 | Wife | — | Pennsylvania |
| 67 | George Christian | 47 | Head | Painter | Germany |
| 68 | Jenny Christian | 43 | Wife | — | Austria |
| 69 | John Christian THIS PERSON | 25 | Son | Laborer | Pennsylvania |
| 70 | Louis Christian | 23 | Son | Apprentice | Pennsylvania |
| 71 | Albert Christian | 21 | Son | Trainee | Pennsylvania |
| 72 | Carl Christian | 19 | Son | Trainee | Pennsylvania |
| 73 | Marie Christian | 17 | Daughter | — | Pennsylvania |
| 74 | Agnes Christian | 16 | Daughter | — | Pennsylvania |
| 75 | Elizabeth Christian | 13 | Daughter | — | Pennsylvania |
| 76 | Joseph Christian | 11 | Son | — | Pennsylvania |
| 77 | Gottlieb Ulrich | 71 | Head | Skinner | Germany |
| 78 | Elizabeth Ulrich | 65 | Wife | — | Germany |
| 79 | Charles Ulrich | 24 | Son | Dryer | Pennsylvania |
| 80 | Florence Ulrich | 18 | Daughter | — | 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)