FD
Frank Day — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Fergus, Montana
Our Model Tree links this Frank Day across the 1910 and 1920 US Censuses in Fergus, Montana (XGBoost, ~Confirmed) — first a son (b.~1904), then head of a 9-person household.
Age 16
b. ~1904
Male
Son
Born: Montana
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Fergus, Montana |
| Surname | Day |
| Given Name | Frank (Bud) |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Wisconsin |
| Additional Details | |
| Occupation | none |
| Speaks English | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Township / Ward | Lewistown City |
| Est. Birth Year | ~1904 |
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.
9 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Donald Day | Son | — | 13 | ~1907 |
| Frank Day | Other | — | 84 | ~1836 |
| Frank Day | Son | — | 16 | ~1904 |
| Betty Day | Daughter | — | 1 | ~1919 |
| Earl Day | Son | — | 11 | ~1909 |
| Bertha Day | Daughter | — | 17 | ~1903 |
| Marion Day | Daughter | — | 7 | ~1913 |
| George Day | Head | — | 42 | ~1878 |
| Lillias Day | Spouse | — | 37 | ~1883 |
Census Appearances
1910
Fergus, Montana
Son, age 6
Fergus, Montana · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Frank R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Wisconsin |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1920
Fergus, Montana
Son, age 16
Fergus, Montana · implied b. ~1904 — 9 household members
| Surname | Day |
| Given Name | Frank (Bud) |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Wisconsin |
| Occupation | none |
| Speaks English | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
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 Frank Day across 2 US Census years (1910 and 1920) in Fergus, Montana, using XGBoost record linkage.
Show:
This person
Anchor record
Frank Day
Son · 1920 · age 16 · b. ~1904 · Montana
★ You are viewing this record
Sibling
Earl Day
Sibling · 1920 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Day
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Day
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Day
Sibling · 1920 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Day
Sibling · 1920 · age 1
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
1920 US Federal Census — Fergus, Montana
Open full size
1920 US Federal Census — Fergus, Montana
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu969unit:1107)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Brooks | 32 | Boarder | None | United States |
| 2 | Floyd H. Brooks | 11 | Son | None | Minnesota |
| 3 | Milton R. Brooks | 28 | Son | Engineer | Michigan |
| 4 | Irene Brooks | 28 | Wife | None | Vermont |
| 5 | Gail Brooks | 0 | Daughter | None | Iowa |
| 6 | Charles Brooks | 0 | Son | None | Montana |
| 7 | George W. Rowland | 62 | Head | Street Cleaner | Oregon |
| 8 | Mary Rowland | 50 | Wife | None | Indiana |
| 9 | Agnes M. Rowland | 34 | Daughter | Boiler Maker | Minnesota |
| 10 | Ina Rowland | 21 | Daughter | None | Washington |
| 11 | James S. Rowland | 0 | Grandson | None | Montana |
| 12 | Gladys Rowland | 16 | Daughter | Elevator Boy | Washington |
| 13 | Joseph Nellehoven | 30 | Head | Deliverer | Wisconsin |
| 14 | Mildred Nellehoven | 22 | Wife | None | Montana |
| 15 | Svend Horland | 43 | Head | Stock Raiser | Norway |
| 16 | Olga Horland | 38 | Wife | None | Norway |
| 17 | Annie Horland | 14 | Daughter | None | Montana |
| 18 | Alice S. Horland | 9 | Daughter | None | Montana |
| 19 | Selma Horland | 7 | Daughter | None | Montana |
| 20 | Svend Horland | 5 | Son | None | Montana |
| 21 | Sarah M. Cox | 50 | Housekeeper | Housekeeper | Missouri |
| 22 | John C. Finstad | 46 | Head | Carpenter | Illinois |
| 23 | Minnie Finstad | 40 | Wife | None | Missouri |
| 24 | John J. Finstad | 0 | Son | None | Montana |
| 25 | Frank A. Curtis | 33 | Head | Brakeman | Illinois |
| 26 | Nannie E. Curtis | 36 | Wife | None | Iowa |
| 27 | Marsha L. Curtis | 3 | Daughter | None | Montana |
| 28 | Nancy A. Read | 35 | Lodger | Stenographer | Iowa |
| 29 | James D. Bennett | 53 | Head | None | Ohio |
| 30 | Belle Bennett | 41 | Wife | None | Iowa |
| 31 | Louisa Mctune | 16 | Stepdaughter | None | Iowa |
| 32 | Paul H. Brihaye | 41 | Head | Cleaner | France |
| 33 | Bertha Brihaye | 36 | Wife | None | France |
| 34 | George H. Day | 42 | Head | Farmer | Montana |
| 35 | Lillias Day | 37 | Wife | None | Montana |
| 36 | Bertha Day | 17 | Daughter | None | Montana |
| 37 | Frank (Bud) Day THIS PERSON | 16 | Son | None | Montana |
| 38 | Donald Day | 13 | Son | None | Montana |
| 39 | Earl Day | 11 | Son | None | Montana |
| 40 | Marion Day | 7 | Daughter | None | Montana |
| 41 | Betty Day | 1 | Daughter | None | Montana |
| 42 | Frank Day | 84 | Father | None | England |
| 43 | Peter C. Cross | 31 | Head | Brakeman | Idaho |
| 44 | Helena L. Cross | 26 | Wife | None | Montana |
| 45 | Grover P. Cross | 7 | Son | None | Washington |
| 46 | Audrey M. Cross | 6 | Daughter | None | Montana |
| 47 | Ben W. Norman | 53 | Head | None | North Carolina |
| 48 | Teresa Norman | 49 | Wife | None | Wisconsin |
| 49 | Martin J. Norman | 18 | Son | Salesman | Montana |
| 50 | Theodore Norman | 16 | Son | None | Montana |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)