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Helen Davis — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cecil, Maryland
Our Model Tree links this Helen Davis across the 1920, 1930 and 1940 US Censuses in Cecil, Maryland (XGBoost, ~Confirmed), with identified parents Peter & Alfred — first a daughter (b.~1909), then head of a 5-person household.
Age 21
b. ~1909
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cecil, Maryland |
| Surname | Davis |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Jewelry Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Bookkeeper |
| Township / Ward | North East |
| Est. Birth Year | ~1909 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Davis | Daughter | — | 21 | ~1909 |
| Ruth-Ab Davis | Daughter | — | 20 | ~1910 |
| Peter Davis | Head | — | 76 | ~1854 |
| Joshua Davis | Other | — | 80 | ~1850 |
| Elizabeth Hyland | Other | — | 73 | ~1857 |
Census Appearances
1920
Cecil, Maryland
Daughter, age 11
Cecil, Maryland · implied b. ~1909 — 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 | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Cecil, Maryland
Daughter, age 21
Cecil, Maryland · implied b. ~1909 — 5 household members
| Surname | Davis |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Bookkeeper |
| Industry | Jewelry Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Cecil-County, Maryland
Daughter, age 31
Cecil-County, Maryland · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Hellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | North East |
| 1935 Residence (County) | Cecil |
| Occupation | Stock Clerk |
| Industry | Jewelry Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Peter Davis (~0.92 confidence) and father Alfred Davis (~0.92 confidence) and mother Rebecca Davis (~0.92 confidence) and mother Rebecca Davis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Peter Davis
b. ~1854
Source mother
● Household
· direct · ~0.92
Father
Alfred Davis
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Rebecca Davis
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Rebecca Davis
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Davis
Daughter · 1930 · age 21 · b. ~1909 · Maryland
★ You are viewing this record
Sibling
Ruth-Ab Davis
Sibling · 1930 · age 20
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 — Cecil, Maryland
Open full size
1930 US Federal Census — Cecil, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus873unit:0268)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Paul Sweet | 46 | Head | Proprietor | Maryland |
| 2 | Anna Sweet | 38 | Wife-H | None | Maryland |
| 3 | Amy E. Sweet | 16 | Daughter | None | Maryland |
| 4 | Ruth Sweet | 9 | Daughter | None | Maryland |
| 5 | Pauline Sweet | 6 | Daughter | None | Maryland |
| 6 | Clayton Craig | 27 | Head | Carpenter | Maryland |
| 7 | T. Hazel Craig | 23 | Wife-H | None | Maryland |
| 8 | Mildred Craig | 3 | Daughter | None | Maryland |
| 9 | Hiram W. Shallcross | 59 | Head | Mason | Maryland |
| 10 | Annie Shallcross | 59 | Wife-H | Proprietress | Maryland |
| 11 | Margaret Shallcross | 22 | Daughter | None | Maryland |
| 12 | Herbert Shallcross | 18 | Son | Clerk | Maryland |
| 13 | Joseph S. Knox | 60 | Boarder | Carpenter | Pennsylvania |
| 14 | James Larenty | 75 | Boarder | None | Pennsylvania |
| 15 | William Sanderson | 20 | Head | Operator | Maryland |
| 16 | Margaret Sanderson | 18 | Wife-H | None | Maryland |
| 17 | Orville Bailey | 27 | Head | Superintendent | Pennsylvania |
| 18 | Gladys Bailey | 30 | Wife-H | None | Maryland |
| 19 | Lucille Bailey | 7 | Daughter | None | Maryland |
| 20 | Samuel Lanteri | 37 | Head | Proprietor | Italy |
| 21 | Sara Lanteri | 26 | Wife-H | None | Italy |
| 22 | Mollie Lanteri | 11 | Daughter | None | Delaware |
| 23 | Dennis Lanteri | 9 | Son | None | Delaware |
| 24 | Lanteri | 8 | Daughter | None | Delaware |
| 25 | Katherine Letts | 50 | Head | Telephone Operat. | Maryland |
| 26 | Jacob Garrett | 73 | Brother | Laborer | Pennsylvania |
| 27 | Grant Garrett | 61 | Brother | Laborer | Maryland |
| 28 | Chagney Housekeeper | 50 | Head | Operator | Maryland |
| 29 | Nellie J. Housekeeper | 50 | Wife-H | None | Maryland |
| 30 | Andrew Anderson | 81 | Head | None | Pennsylvania |
| 31 | Mary E. Anderson | 74 | Wife-H | None | Pennsylvania |
| 32 | Peter Davis | 76 | Head | None | Maryland |
| 33 | Elizabeth Hyland | 73 | Aunt-H | None | Maryland |
| 34 | Joshua Davis | 80 | Father | None | Maryland |
| 35 | Helen Davis THIS PERSON | 21 | Daughter | Bookkeeper | Maryland |
| 36 | Ruth-Ab. Davis | 20 | Daughter | Asst Manager | Maryland |
| 37 | George P. Craig | 41 | Head | None | Maryland |
| 38 | Gertrude J. Craig | 39 | Wife-H | None | Pennsylvania |
| 39 | Edna Craig | 16 | Daughter | None | Maryland |
| 40 | Doris Craig | 12 | Daughter | None | Maryland |
| 41 | H. Ellsworth Simpson | 68 | Head | None | Maryland |
| 42 | Laura V. Simpson | 66 | Wife-H | None | Pennsylvania |
| 43 | J. Albert Roney | 47 | Head | Proprietor | Maryland |
| 44 | Vinnie Roney | 40 | Wife-H | None | Maryland |
| 45 | Albert Jr. Roney | 16 | Son | None | Maryland |
| 46 | Curtis Roney | 14 | Son | None | Maryland |
| 47 | Francis Beach | 71 | Head | Asst Postmaster | Maryland |
| 48 | Lollie Beach | 65 | Wife-H | None | Maryland |
| 49 | Emily F. Beach | 42 | Daughter | None | Maryland |
| 50 | Benjamin Simcoe | 79 | Head | None | Maryland |
Pedigree Summary
Helen + 1 sibling
Gen 1 · 4 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)