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Helen Davis — 1930 US Census Record
Model Tree available1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Helen Davis across the 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Francis & Sophia — first a daughter (b.~1906), then head of a 6-person household.
Age 24
b. ~1906
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Davis |
| Given Name | Helen C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Canada-English |
| Additional Details | |
| Occupation | Watchworker |
| Industry | Watch Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Watchworker |
| Township / Ward | Weston Town |
| Est. Birth Year | ~1906 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Elvira Davis | Daughter | — | 21 | ~1909 |
| Helen Davis | Daughter | — | 24 | ~1906 |
| Francis Tobin | Head | — | 75 | ~1855 |
| Willard Davis | Other | — | 47 | ~1883 |
| Sophia Davis | Other | — | 56 | ~1874 |
| Mary Tobin | Other | — | 72 | ~1858 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age 4
Middlesex, Massachusetts · implied b. ~1906 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Helen F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Can English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 14
Middlesex, Massachusetts · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Prince Edward Island |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 24
Middlesex, Massachusetts · implied b. ~1906 — 6 household members
| Surname | Davis |
| Given Name | Helen C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Canada-English |
| Occupation | Watchworker |
| Industry | Watch Factory |
| 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 Helen Davis across 3 US Census years (1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: father Francis Tobin (~0.92 confidence) and mother Sophia Davis (~0.92 confidence) and father Milton Davis (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Francis Tobin
b. ~1855
Source father
● Household
· direct · ~0.92
Mother
Sophia Davis
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
Milton Davis
b. ~1892
Source father
● Household
· direct · ~0.92
This person
Anchor record
Helen Davis
Daughter · 1930 · age 24 · b. ~1906 · Massachusetts
★ You are viewing this record
Sibling
Elvira Davis
Sibling · 1930 · 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
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel932:0176)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Alice Gane | 4 | Daughter | None | Massachusetts |
| 52 | Anna S. Fuller | 76 | Mother-in-law | None | Missouri |
| 53 | Charles E. Smith | 80 | Head | Farmer | Massachusetts |
| 54 | Anna H. Smith | 47 | Wife-H | None | Connecticut |
| 55 | Lincoln H. Smith | 22 | Son | None | Massachusetts |
| 56 | Sylvia H. Smith | 16 | Daughter | None | Massachusetts |
| 57 | Carl D. Smith | 14 | Son | None | Massachusetts |
| 58 | Walter S. Smith | 51 | Brother | None | Massachusetts |
| 59 | Frederic A. Crafts | 41 | Head | Asst Dist Attorney | New Hampshire |
| 60 | Josephine M. Crafts | 36 | Wife-H | None | Massachusetts |
| 61 | Dorothy B. Crafts | 18 | Daughter | None | District of Columbia |
| 62 | Frederic A. Jr. Crafts | 1 | Son | None | Massachusetts |
| 63 | Arthur C. Jones | 50 | Head | Watch Maker | Vermont |
| 64 | Edith F. Jones | 48 | Wife-H | None | England |
| 65 | John E. Barrus | 10 | Boarder | None | Massachusetts |
| 66 | Robert Sharpe | 9 | Boarder | None | Massachusetts |
| 67 | Patrick Cotter | 41 | Head | Fireman | Canada-English |
| 68 | Mary J. Cotter | 41 | Wife-H | None | Illinois |
| 69 | Joseph Cotter | 16 | Son | None | Canada-English |
| 70 | Patrick Walsh | 62 | Boarder | Farmer | Canada-English |
| 71 | Thomas Joseph | 55 | Boarder | Farmer | Northern Ireland |
| 72 | Frank Mccunn | 44 | Boarder | Farmer | New York |
| 73 | Edward Eberly | 40 | Boarder | Farmer | Maine |
| 74 | Joseph Wiederka | 27 | Boarder | Farmer | Germany |
| 75 | Paul Sterck | 50 | Boarder | Carpenter | Lithuania |
| 76 | John Nielsen Olsen | 34 | Boarder | Mason | Norway |
| 77 | Roland S. Bumpus | 32 | Head | Machinist | Massachusetts |
| 78 | Ruth M. Bumpus | 32 | Wife-H | None | Scotland |
| 79 | William A. Bumpus | 64 | Father | Farmer | Massachusetts |
| 80 | Shirley R. Bumpus | 6 | Daughter | None | Massachusetts |
| 81 | Roland S. Jr. Bumpus | 9 | Son | None | Massachusetts |
| 82 | Henry A. Wheeler | 75 | Head | None | Massachusetts |
| 83 | Mary E. Wheeler | 67 | Wife-H | None | Canada-English |
| 84 | Frank Nelson | 73 | Boarder | None | Massachusetts |
| 85 | Milton F. Sherman | 38 | Head | Landscape Architect | Massachusetts |
| 86 | Laura V. Sherman | 39 | Wife-H | None | New York |
| 87 | Barbara J. Sherman | 5 | Daughter | None | Massachusetts |
| 88 | Martha J. Sherman | 3 | Daughter | None | Massachusetts |
| 89 | Francis T. Tobin | 75 | Head | Organ Builder | Irish Free State |
| 90 | Mary F. Tobin | 72 | Wife-H | None | Massachusetts |
| 91 | Willard Y. Davis | 47 | R | Watch Maker | Maine |
| 92 | Sophia Davis | 56 | Wife-H | None | Canada-English |
| 93 | Helen C. Davis THIS PERSON | 24 | Daughter | Watchworker | Massachusetts |
| 94 | Elvira C. Davis | 21 | Daughter | Secretary | Massachusetts |
| 95 | Carroll L. Berry | 64 | Head | Fireman | Maine |
| 96 | Florence J. Berry | 57 | Wife-H | None | Canada-English |
| 97 | Harlan C. Berry | 32 | Son | Police Officer | Massachusetts |
| 98 | Margaret E. Berry | 27 | Daughter | Clerk | Massachusetts |
| 99 | Margaret C. Mackenzie | 19 | Niece | None | Washington |
| 100 | Bertram W. Skinner | 66 | Head | Organ Builder | Massachusetts |
Pedigree Summary
Helen + 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)