JD
John Davis — 1930 US Census Record
Model Tree available1930 United States Federal Census · Norfolk, Massachusetts
Our Model Tree links this John Davis across the 1910, 1920 and 1930 US Censuses in Norfolk, Massachusetts (XGBoost, ~Confirmed), with identified parents Arthur & Arthur — first a son (b.~1903), then head of a 11-person household.
Age 27
b. ~1903
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Norfolk, Massachusetts |
| Surname | Davis |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Salesman |
| Industry | Boots |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Salesman |
| Township / Ward | Dover Town |
| Est. Birth Year | ~1903 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Davis | Head | — | 59 | ~1871 |
| Margaret Donovan | Other | — | 62 | ~1868 |
| Catherine Carrol | Other | — | 65 | ~1865 |
| William Jennings | Other | — | 28 | ~1902 |
| Beatrice Donovan | Other | — | 24 | ~1906 |
| Katherine Moran | Other | — | 68 | ~1862 |
| Elizabeth Kearney | Other | — | 51 | ~1879 |
| Annie Igoe | Other | — | 44 | ~1886 |
| Arthur Davis | Son | — | 19 | ~1911 |
| George Davis | Son | — | 23 | ~1907 |
| John Davis | Son | — | 27 | ~1903 |
Census Appearances
1910
Norfolk, Massachusetts
Son, age 7
Norfolk, Massachusetts · implied b. ~1903 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Norfolk, Massachusetts
Son, age 17
Norfolk, Massachusetts · implied b. ~1903 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| 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 |
1930
Norfolk, Massachusetts
Son, age 27
Norfolk, Massachusetts · implied b. ~1903 — 11 household members
| Surname | Davis |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Salesman |
| Industry | Boots |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 John Davis across 3 US Census years (1910, 1920 and 1930) in Norfolk, Massachusetts, using XGBoost record linkage. Identified parents: father Arthur Davis (~0.92 confidence) and father Arthur Davis (~0.92 confidence) and mother Mary Davis (~0.92 confidence) and mother Mary Davis (~0.92 confidence) and mother Mary Davis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Davis
b. ~1858
Source father
● Household
· direct · ~0.92
Father
Arthur Davis
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Mary Davis
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Mary Davis
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Mary Davis
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Davis
Son · 1930 · age 27 · b. ~1903 · Massachusetts
★ You are viewing this record
Sibling
Arthur Davis
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Davis
Sibling · 1930 · age 23
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 — Norfolk, Massachusetts
Open full size
1930 US Federal Census — Norfolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel934:0541)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary C. Davis | 59 | Head | None | Massachusetts |
| 2 | George B. Davis | 23 | Son | Salesman | Massachusetts |
| 3 | Arthur E. Davis | 19 | Son | None | Massachusetts |
| 4 | John Davis THIS PERSON | 27 | Son | Salesman | Massachusetts |
| 5 | Catherine Carrol | 65 | Servant | House Keeper | Massachusetts |
| 6 | Elizabeth Kearney | 51 | Servant | House Maid | Irish Free State |
| 7 | William Jennings | 28 | Servant | House Man | Irish Free State |
| 8 | Katherine Moran | 68 | Servant | Laundress | Maine |
| 9 | Margaret Donovan | 62 | Servant | Chamber Maid | Irish Free State |
| 10 | Beatrice Donovan | 24 | Servant | Parlor Maid | Irish Free State |
| 11 | Annie Igoe | 44 | Servant | Cook | Irish Free State |
| 12 | Alexander Shaw | 64 | Head | Gardener | Scotland |
| 13 | Margaret E. Shaw | 57 | Wife-H | None | Canada English |
| 14 | Ralph H. Goucher | 31 | Head | Electrician | Canada English |
| 15 | Fay W. Goucher | 28 | Wife-H | None | Canada English |
| 16 | Audrey H. Goucher | 7 | Daughter | None | Canada English |
| 17 | Harold H. Goucher | 6 | Son | None | Canada English |
| 18 | John W. Goucher | 4 | Son | None | Canada English |
| 19 | Elva I. Goucher | 2 | Daughter | None | Massachusetts |
| 20 | George R. S. Newcomb | 39 | Head | Carpenter | Massachusetts |
| 21 | Mary E. Newcomb | 40 | Wife-H | None | Massachusetts |
| 22 | George W. Newcomb | 18 | Son | None | Massachusetts |
| 23 | Dorothy E. Newcomb | 17 | Daughter | None | Massachusetts |
| 24 | Margaret P. Mcdowell | 54 | Head-H | None | Massachusetts |
| 25 | Robert M. Mcdowell | 23 | Son | Salesman | Massachusetts |
| 26 | Lillian Phillips | 20 | Servant | Housemaid | Canada English |
| 27 | Mary Merritt | 50 | Servant | Housemaid | Massachusetts |
| 28 | Harry Hereford | 41 | Head | Carpenter | England |
| 29 | Edith M. Hereford | 31 | Wife-H | None | Massachusetts |
| 30 | Harry A. Jr. Hereford | 8 | Son | None | Massachusetts |
| 31 | Mildred Hereford | 3 | Daughter | None | Massachusetts |
| 32 | Caroline Newell | 38 | Head-H | None | Massachusetts |
| 33 | Samuel E. Peabody | 42 | Head | Broker | Massachusetts |
| 34 | Teotero Chinda | 38 | Servant | Houseman | Japan |
| 35 | Charles L. Doyle | 38 | Servant | Chauffeur | Massachusetts |
| 36 | Michael Di Francesco | 48 | Head | Machinist | Italy |
| 37 | Mary Di Francesco | 45 | Wife-H | None | Italy |
| 38 | Angelo A. Di Francesco | 26 | Son | Grocer | Massachusetts |
| 39 | Albert Di Francesco | 21 | Son | Laborer | Massachusetts |
| 40 | Sarah E. Dean | 81 | Head-H | None | Massachusetts |
| 41 | Mary Grover | 61 | Servant | None | Canada English |
| 42 | Settimio Luhazi | 33 | Head | Contractor | Italy |
| 43 | Rose Luhazi | 24 | Wife-H | None | Massachusetts |
| 44 | Philip E. Luhazi | 6 | Son | None | Massachusetts |
| 45 | Francis A. Luhazi | 3 | Son | None | Massachusetts |
| 46 | Amelie M. Albany | 72 | Head-H | Proprietor | France |
| 47 | Arthur M. Wright | 69 | Head | Cashier | New York |
| 48 | Mary A. Wright | 70 | Wife-H | None | Massachusetts |
| 49 | Francis Y. Bulpinck | 50 | Head | Architect | Massachusetts |
| 50 | Margaret S. Bulpinck | 50 | Wife-H | None | Massachusetts |
Related Census Records
Pedigree Summary
John + 2 siblings
Gen 1 · 5 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)