MD
May Davis — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Dallas, Iowa
Our Model Tree links this May Davis across the 1930 and 1940 US Censuses in Dallas, Iowa (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 11-person household.
Age 9
b. ~1921
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Dallas, Iowa |
| Surname | Davis |
| Given Name | May |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Boone Township |
| Est. Birth Year | ~1921 |
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 May | Age | Birth yr |
|---|---|---|---|---|
| May Davis | Son | — | 9 | ~1921 |
| Robert Davis | Son | — | 1 | ~1929 |
| Grace Davis | Daughter | — | 11 | ~1919 |
| Alberta Davis | Daughter | — | 14 | ~1916 |
| Clair Davis | Son | — | 3 | ~1927 |
| Mabel Davis | Spouse | — | 38 | ~1892 |
| John Davis | Head | — | 54 | ~1876 |
| Ruby Davis | Daughter | — | 18 | ~1912 |
| Edith Butler | Other | — | 57 | ~1873 |
| Rex Davis | Son | — | 6 | ~1924 |
| Vinnie Davis | Daughter | — | 16 | ~1914 |
Census Appearances
1930
Dallas, Iowa
Son, age 9
Dallas, Iowa · implied b. ~1921 — 11 household members
| Surname | Davis |
| Given Name | May |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Dallas-County, Iowa
Son, age 19
Dallas-County, Iowa · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Max |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Boone Twp |
| 1935 Residence (County) | Dallas |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 688 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 May Davis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
May Davis
Son · 1930 · age 9 · b. ~1921 · Iowa
★ You are viewing this record
Sibling
Grace Davis
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clair Davis
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alberta Davis
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rex Davis
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Davis
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vinnie Davis
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruby Davis
Sibling · 1930 · age 18
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 — Dallas, Iowa
Open full size
1930 US Federal Census — Dallas, Iowa
Page Contents
48 people indexed on this census page (ia:1930:iowacensus00reel650:0927)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martin Forret | 34 | Head | Farmer | Iowa |
| 2 | Lillie Forret | 31 | Wife | None | Missouri |
| 3 | Iva Harrison | 10 | Step son | None | Missouri |
| 4 | Dave Harrison | 14 | Step son | None | Missouri |
| 5 | Fred Merryman | 49 | Head | Farmer | Iowa |
| 6 | Hattie Merryman | 49 | Wife | None | Iowa |
| 7 | Bernice Merryman | 21 | Daughter | None | Iowa |
| 8 | Mary Swallow | 81 | Mother in law | None | Pennsylvania |
| 9 | Joseph Forret | 49 | Head | Farmer | Iowa |
| 10 | Amelia Forret | 40 | Wife | None | Iowa |
| 11 | John E. Forret | 16 | Son | None | Iowa |
| 12 | Albert P. Forret | 13 | Son | None | Iowa |
| 13 | Glenn W. Forret | 11 | Son | None | Iowa |
| 14 | George L. Forret | 9 | Son | None | Iowa |
| 15 | Marlene M. Forret | 6 | Daughter | None | Iowa |
| 16 | James Rodgers | 61 | Head | Farmer | Ohio |
| 17 | Francis Rodgers | 61 | Wife | None | Iowa |
| 18 | Thomas E. Ray | 61 | Head | Farmer | Iowa |
| 19 | Anna Ray | 62 | Wife | None | Iowa |
| 20 | Missouri R. Ray | 82 | Mother | None | Kentucky |
| 21 | Frank Pyles | 58 | Head | Laborer | Illinois |
| 22 | Chester Pyles | 21 | Son | Laborer | Iowa |
| 23 | Ethel Pyles | 18 | Daughter | None | Iowa |
| 24 | Edith Pyles | 14 | Daughter | None | Iowa |
| 25 | Harold Gray | 15 | Grand son | Laborer | Iowa |
| 26 | Margaret Gray | 11 | Grand daughter | None | Iowa |
| 27 | Gilbert Lint | 33 | Head | Farmer | Iowa |
| 28 | Mabel Lint | 33 | Wife | Gen. Housework | Iowa |
| 29 | Peter Lint | 74 | Head | Farmer | Ohio |
| 30 | John A. Davis | 54 | Head | Farmer | Illinois |
| 31 | Mabel E. Davis | 38 | Wife | None | Illinois |
| 32 | Ruby Davis | 18 | Daughter | None | Iowa |
| 33 | Vinnie Davis | 16 | Daughter | None | Iowa |
| 34 | Alberta Davis | 14 | Daughter | None | Iowa |
| 35 | Grace Davis | 11 | Daughter | None | Iowa |
| 36 | May Davis THIS PERSON | 9 | Son | None | Iowa |
| 37 | Rex Davis | 6 | Son | None | Iowa |
| 38 | Clair Davis | 3 | Son | None | Iowa |
| 39 | Robert Davis | 1 | Son | None | Iowa |
| 40 | Edith Butler | 57 | Sister | Servant | Illinois |
| 41 | William Davis | 61 | Head | Farmer | Illinois |
| 42 | Emma Davis | 63 | Wife | None | Illinois |
| 43 | Bert L. Davis | 42 | Son | Laborer | Iowa |
| 44 | Pearl Davis | 40 | Daughter | None | Iowa |
| 45 | Tom J. Cushing | 68 | Head | Farmer | New York |
| 46 | Elizabeth Cushing | 62 | Wife | None | Iowa |
| 47 | H. E. Cushing | 22 | Nephew | None | Iowa |
| 48 | Mable Griffith | 18 | Boarder | Teacher | Iowa |
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)