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Roy Williams — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Boulder, Colorado
Our Model Tree links this Roy Williams across the 1920 and 1930 US Censuses in Boulder, Colorado (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 27-person household.
Age 19
b. ~1911
Male
Son
Born: Colorado
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Boulder, Colorado |
| Surname | Williams |
| Given Name | Roy S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Germany |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Precinct No 3 Altona |
| Est. Birth Year | ~1911 |
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.
27 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Roy | Age | Birth yr |
|---|---|---|---|---|
| Francis Hewitt | Daughter | — | 25 | ~1905 |
| Eleanor Meyer | Daughter | — | 15 | ~1915 |
| Dorothy Hewitt | Daughter | — | 22 | ~1908 |
| Lula Williams | Daughter | — | 15 | ~1915 |
| Julia Hewitt | Daughter | — | 24 | ~1906 |
| Charlotte Meyer | Daughter | — | 18 | ~1912 |
| Chris Williams | Head | — | 34 | ~1896 |
| Idell Mull | Other | — | 72 | ~1858 |
| Paul Rehfeldt | Other | — | 20 | ~1910 |
| Eliza Allen | Other | — | 81 | ~1849 |
| Augusta Meyer | Other | — | 48 | ~1882 |
| Anna Williams | Other | — | 42 | ~1888 |
| Charity Allen | Other | — | 66 | ~1864 |
| Hardy Curry | Other | — | 27 | ~1903 |
| Fred Howe | Other | — | 55 | ~1875 |
| Edith Curry | Other | — | 28 | ~1902 |
| Topham Allen | Other | — | 85 | ~1845 |
| Ralph Meyer | Other | — | 47 | ~1883 |
| Archie Curry | Other | — | 23 | ~1907 |
| Wm Hewitt | Other | — | 58 | ~1872 |
| Billy Williams | Other | — | 5 | ~1925 |
| Annie Hewitt | Other | — | 53 | ~1877 |
| Elmer Williams | Son | — | 12 | ~1918 |
| Irwin Williams | Son | — | 5 | ~1925 |
| Roy Williams | Son | — | 19 | ~1911 |
| Lionel Hewitt | Son | — | 20 | ~1910 |
| Louis Meyer | Son | — | 10 | ~1920 |
Census Appearances
1920
Boulder, Colorado
Son, age 9
Boulder, Colorado · implied b. ~1911 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Roy A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Boulder, Colorado
Son, age 19
Boulder, Colorado · implied b. ~1911 — 27 household members
| Surname | Williams |
| Given Name | Roy S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Roy Williams across 2 US Census years (1920 and 1930) in Boulder, Colorado, using XGBoost record linkage.
Show:
This person
Anchor record
Roy Williams
Son · 1930 · age 19 · b. ~1911 · Colorado
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Sibling
Irwin Williams
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lula Williams
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Hewitt
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Meyer
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elmer Williams
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Meyer
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Hewitt
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Meyer
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Hewitt
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lionel Hewitt
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 — Boulder, Colorado
Open full size
1930 US Federal Census — Boulder, Colorado
Page Contents
50 people indexed on this census page (ia:1930:15thcensus230unit:0759)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Averill | 68 | Head | Farmer | New York |
| 2 | Minnie M Averill | 61 | Wife-H | — | New York |
| 3 | John Jr Averill | 35 | Son | Farmer | Colorado |
| 4 | Edith Averill | 35 | Daughter-in-law | — | Iowa |
| 5 | Sidney Averill | 12 | Grandson | — | Kansas |
| 6 | Duane Averill | 11 | Grandson | — | Kansas |
| 7 | Kenneth Averill | 6 | Grandson | — | Colorado |
| 8 | Peggy Averill | 1 | Granddaughter | — | Colorado |
| 9 | Lawrence Hawkins | 48 | Head | Farmer | Missouri |
| 10 | Lizzie Hawkins | 40 | Wife-H | — | Missouri |
| 11 | Clifford Hawkins | 21 | Son | Laborer Farm | Missouri |
| 12 | Lila Hawkins | 18 | Daughter | — | Missouri |
| 13 | Sylvia Hawkins | 11 | Daughter | — | Wyoming |
| 14 | Bryant Hawkins | 7 | Son | — | Wyoming |
| 15 | Fern Hawkins | 6 | Daughter | — | Wyoming |
| 16 | Goldie Hawkins | 3 | Daughter | — | Wyoming |
| 17 | Gifford Cenni | 37 | Head | Farmer | Wisconsin |
| 18 | Frances Cenni | 35 | Wife-H | — | Wisconsin |
| 19 | Frances Cenni | 13 | Daughter | — | Colorado |
| 20 | Asa Lynch | 44 | Lodger | Laborer Farm | New York |
| 21 | William Dierks | 38 | Head | Truck Driver | California |
| 22 | Inez Dierks | 26 | Wife-H | — | Colorado |
| 23 | Herbert Dierks | 2 | Son | — | Colorado |
| 24 | Chris Williams | 34 | Head | Farmer | Colorado |
| 25 | Anna H Williams | 42 | Wife-H | — | Germany |
| 26 | Roy S Williams THIS PERSON | 19 | Son | — | Colorado |
| 27 | Lula Williams | 15 | Daughter | — | Colorado |
| 28 | Elmer Williams | 12 | Son | — | Colorado |
| 29 | Irwin Williams | 5 | Son | — | Colorado |
| 30 | Billy Williams | 5 | Grandson | — | Colorado |
| 31 | Hardy Curry | 27 | R | Farmer | Colorado |
| 32 | Edith Curry | 28 | Wife-H | — | Colorado |
| 33 | Archie Curry | 23 | Brother | Farm Laborer | Colorado |
| 34 | Ralph Meyer | 47 | O | Farmer | Wyoming |
| 35 | Augusta Meyer | 48 | Wife-H | — | Wyoming |
| 36 | Charlotte Meyer | 18 | Daughter | — | Wyoming |
| 37 | Eleanor Meyer | 15 | Daughter | — | Wyoming |
| 38 | Louis Meyer | 10 | Son | — | Wyoming |
| 39 | Paul Rehfeldt | 20 | Lodger | Laborer Farm | Kansas |
| 40 | Fred L Howe | 55 | O | Farmer | Massachusetts |
| 41 | Topham Allen | 85 | O | Farmer | Ohio |
| 42 | Eliza J Allen | 81 | Sister-H | — | Ohio |
| 43 | Charity Allen | 66 | Sister | — | Ohio |
| 44 | Wm O Hewitt | 58 | O | Farmer | England |
| 45 | Annie Hewitt | 53 | Wife-H | — | England |
| 46 | Francis Hewitt | 25 | Daughter | Laborer Farm | Colorado |
| 47 | Julia Hewitt | 24 | Daughter | Laborer Farm | Colorado |
| 48 | Dorothy Hewitt | 22 | Daughter | Laborer Farm | Colorado |
| 49 | Lionel H Hewitt | 20 | Son | Laborer Farm | Colorado |
| 50 | Idell Mull | 72 | H | — | Germany |
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)