JD
James Day — 1930 US Census Record
Model Tree available1930 United States Federal Census · Essex, Massachusetts
Our Model Tree links this James Day across the 1910, 1920 and 1930 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed), with identified parents Jeremiah & Catherine — first a son (b.~1894), then head of a 4-person household.
Age 36
b. ~1894
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, Massachusetts |
| Surname | Day |
| Given Name | James J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Asst Principal |
| Industry | High School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Asst Principal |
| Township / Ward | Salem City |
| Est. Birth Year | ~1894 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mary Day | Daughter | — | 35 | ~1895 |
| Jeremiah Day | Head | — | 72 | ~1858 |
| James Day | Son | — | 36 | ~1894 |
| Catherine Day | Spouse | — | 62 | ~1868 |
Census Appearances
1910
Essex, Massachusetts
Son, age 18
Essex, Massachusetts · implied b. ~1892 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | James F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Essex, Massachusetts
Son, age 28
Essex, Massachusetts · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | James F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Teacher |
| Industry | High School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Son, age 36
Essex, Massachusetts · implied b. ~1894 — 4 household members
| Surname | Day |
| Given Name | James J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Asst Principal |
| Industry | High School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 James Day across 3 US Census years (1910, 1920 and 1930) in Essex, Massachusetts, using XGBoost record linkage. Identified parents: father Jeremiah Day (~0.92 confidence) and mother Catherine Day (~0.92 confidence) and mother Catherine Day (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jeremiah Day
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Catherine Day
b. ~1863
Source mother
● Household
· direct · ~0.92
Mother
Catherine Day
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Day
Son · 1930 · age 36 · b. ~1894 · Massachusetts
★ You are viewing this record
Sibling
Mary Day
Sibling · 1930 · age 35
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
1930 US Federal Census — Essex, Massachusetts
Open full size
1930 US Federal Census — Essex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel902:0895)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John B. Gonel | 57 | Head | Weaver | Poland |
| 2 | Tekla H. Gonel | 53 | Wife | — | Poland |
| 3 | Mary Gonel | 32 | Daughter | Spinner | Massachusetts |
| 4 | Nellie F. Gonel | 26 | Son | Dresser | Massachusetts |
| 5 | Henry J. Gonel | 18 | Son | Mill Worker | Massachusetts |
| 6 | Frank J. Gonel | 33 | Head | Fireman | Massachusetts |
| 7 | Harriet J. Gonel | 30 | Wife | — | Massachusetts |
| 8 | Jeremiah J. Day | 72 | Head | Policeman | Massachusetts |
| 9 | Catherine Day | 62 | Wife | — | Massachusetts |
| 10 | Mary E. Day | 35 | Daughter | Teacher | Massachusetts |
| 11 | James J. Day THIS PERSON | 36 | Son | Asst Principal | Massachusetts |
| 12 | Harry G. Green | 33 | Head | Painter | Canada English |
| 13 | Mary R. Green | 24 | Wife | — | Massachusetts |
| 14 | Harry G. Green | 6 | Son | — | Massachusetts |
| 15 | Eleanor Rose Green | 5 | Daughter | — | Massachusetts |
| 16 | Alice G. Green | 4 | Daughter | — | Massachusetts |
| 17 | Frederick X. Green | 2 | Son | — | Massachusetts |
| 18 | Julia Donohue | 48 | Head | House Keeper | Ireland |
| 19 | James J. Donohue | 22 | Son | Laborer | Massachusetts |
| 20 | Donald Donohue | 21 | Son | Staker | Massachusetts |
| 21 | Elizabeth Donohue | 19 | Daughter | House Keeper | Massachusetts |
| 22 | John Donohue | 17 | Son | Laborer | Massachusetts |
| 23 | Francis Donohue | 15 | Son | — | Massachusetts |
| 24 | Joseph Donohue | 13 | Son | — | Massachusetts |
| 25 | Thomas Mccarthy | 58 | Head | — | Ireland |
| 26 | Helen J. Mccarthy | 35 | Daughter | Saleslady | Massachusetts |
| 27 | Mary A. Mccarthy | 33 | Daughter | Saleslady | Massachusetts |
| 28 | Joseph H. Burke | 36 | Head | Chauffeur | Massachusetts |
| 29 | Eva Burke | 35 | Wife | Spinner | Massachusetts |
| 30 | Lumena Burke | 16 | Daughter | Stitcher | Massachusetts |
| 31 | William J. Stone | 48 | Head | Fireman | Massachusetts |
| 32 | Ethel Stone | 36 | Wife | — | Massachusetts |
| 33 | William F. Stone | 20 | Son | Repair Man | Massachusetts |
| 34 | Theodore Stone | 18 | Son | Making | Massachusetts |
| 35 | Walter Stone | 16 | Son | Blacky Edge | Massachusetts |
| 36 | Marion Stone | 14 | Daughter | — | Massachusetts |
| 37 | Florence Stone | 12 | Daughter | — | Massachusetts |
| 38 | James Stone | 11 | Daughter | — | Massachusetts |
| 39 | Richard Stone | 9 | Son | — | Massachusetts |
| 40 | Ethel Stone | 6 | Daughter | — | Massachusetts |
| 41 | Phyllis Stone | 2 | Daughter | — | Massachusetts |
| 42 | Robert Stone | 1 | Son | — | Massachusetts |
| 43 | Richard Freyman | 37 | Head | Traveling Salesman | Maryland |
| 44 | Margaret Freyman | 37 | Wife | — | Massachusetts |
| 45 | Richard Freyman | 13 | Son | — | Massachusetts |
| 46 | Mary Freyman | 10 | Daughter | — | Massachusetts |
| 47 | Richard Freyman | 7 | Son | — | Massachusetts |
| 48 | John J. O'Connor | 48 | Head | Carpenter | Massachusetts |
| 49 | Mary O'Connor | 48 | Wife | Stenographer | Massachusetts |
| 50 | Robert J. O'Connor | 17 | Son | — | Massachusetts |
Pedigree Summary
James + 1 sibling
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 1930 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)