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Julia Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Northampton-County, Pennsylvania
Our Model Tree links this Julia Martin across the 1930 and 1940 US Censuses in Northampton-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 7-person household.
Age 17
b. ~1923
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Northampton-County, Pennsylvania |
| Surname | Martin |
| Given Name | Julia |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lower Saucon |
| 1935 Residence (County) | Northampton |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Lower Saucon |
| Est. Birth Year | ~1923 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Julia | Age | Birth yr |
|---|---|---|---|---|
| Joseph Martin | Son | — | 19 | ~1921 |
| Anna Martin | Daughter | — | 20 | ~1920 |
| Frank Martin | Son | — | 15 | ~1925 |
| Charles Martin | Son | — | 23 | ~1917 |
| Katalin Martin | Spouse | — | 47 | ~1893 |
| Dezso Martin | Head | — | 59 | ~1881 |
| Julia Martin | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Northampton, Pennsylvania
Daughter, age 7
Northampton, Pennsylvania · implied b. ~1923 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Julia |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Northampton-County, Pennsylvania
Daughter, age 17
Northampton-County, Pennsylvania · implied b. ~1923 — 7 household members
| Surname | Martin |
| Given Name | Julia |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lower Saucon |
| 1935 Residence (County) | Northampton |
| Highest Grade | H 2 |
| 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 Julia Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Julia Martin
Daughter · 1940 · age 17 · b. ~1923 · Pennsylvania
★ You are viewing this record
Sibling
Anna Martin
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Martin
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Martin
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Martin
Sibling · 1940 · age 15
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 — Northampton-County, Pennsylvania
Open full size
1940 US Federal Census — Northampton-County, Pennsylvania
Page Contents
14 people indexed on this census page (nara:1940:m-t0627-03592-00496)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Michael Donchez | 19 | Son | New Worker | Pennsylvania |
| 42 | Emil Donchez | 17 | Son | — | Pennsylvania |
| 43 | Calvin Donchez | 14 | Son | — | Pennsylvania |
| 44 | Elizabeth Donchez | 12 | Daughter | — | Pennsylvania |
| 45 | Maria Koller | 67 | Head | — | Czechoslovakia |
| 46 | Rudolph Koller | 32 | Son | Crancman | Pennsylvania |
| 47 | Lewis Koller | 24 | Son | Electrician | Pennsylvania |
| 48 | Dezso Martin | 59 | Head | Farmer | Hungary |
| 49 | Katalin Martin | 47 | Wife | — | Jugoslavia |
| 50 | Charles Martin | 23 | Son | Shell Shop | Pennsylvania |
| 51 | Anna Martin | 20 | Daughter | Winder | Pennsylvania |
| 52 | Joseph Martin | 19 | Son | New Worker | Pennsylvania |
| 53 | Julia Martin THIS PERSON | 17 | Daughter | — | Pennsylvania |
| 54 | Frank Martin | 15 | 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)