MD
Mary Douglas — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Boundary, Idaho
Our Model Tree links this Mary Douglas across the 1920, 1930 and 1940 US Censuses in Boundary, Idaho (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 11-person household.
Age 51
b. ~1879
Female
Spouse
Born: Iowa
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Boundary, Idaho |
| Surname | Douglas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 22 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Bonners Ferry City |
| Est. Birth Year | ~1879 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Hazel Douglas | Daughter | — | 13 | ~1917 |
| Beulah Alexander | Daughter | — | 24 | ~1906 |
| Lavina Douglas | Daughter | — | 15 | ~1915 |
| Kathleen Douglas | Daughter | — | 10 | ~1920 |
| Gertrude Douglas | Daughter | — | 19 | ~1911 |
| Florence Douglas | Daughter | — | 11 | ~1919 |
| Joel Douglas | Head | — | 60 | ~1870 |
| James Douglas | Son | — | 6 | ~1924 |
| Clifton Douglas | Son | — | 17 | ~1913 |
| Ray Douglas | Son | — | 14 | ~1916 |
| Mary Douglas | Spouse | — | 51 | ~1879 |
Census Appearances
1920
Boundary, Idaho
Spouse, age 41
Boundary, Idaho · implied b. ~1879 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Douglas |
| Given Name | May |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Boundary, Idaho
Spouse, age 51
Boundary, Idaho · implied b. ~1879 — 11 household members
| Surname | Douglas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 22 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Boundary-County, Idaho
Head, age 60
Boundary-County, Idaho · implied b. ~1880 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Douglass |
| Given Name | Mae |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Widowed |
| Birthplace | Iowa |
| 1935 Residence (City) | Kootenai Precinct |
| 1935 Residence (County) | Boundary |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Mary Douglas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Douglas
Spouse · 1930 · age 51 · b. ~1879 · Idaho
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Boundary, Idaho
Open full size
1930 US Federal Census — Boundary, Idaho
Page Contents
50 people indexed on this census page (ia:1930:15thcensus398unit:0069)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred Grumrud | 53 | Head | Mason | Wisconsin |
| 2 | Sarah Grumrud | 46 | Wife | — | Iowa |
| 3 | Annam Grumrud | 14 | Daughter | — | Canada English |
| 4 | Joseph Taft | 56 | Head | Lumberman | Illinois |
| 5 | Edmund Des Jardins | 60 | Friend | Cook | Canada French |
| 6 | Wesley Young | 22 | Head | Laborer | Washington |
| 7 | Myrtle Young | 22 | Wife | — | Missouri |
| 8 | Joseph Ertz | 47 | Head | Watchman | Illinois |
| 9 | Bertha Ertz | 33 | Wife | — | Missouri |
| 10 | Mary Ertz | 13 | Daughter | — | Montana |
| 11 | Frances Ertz | 12 | Daughter | — | Montana |
| 12 | Geneva Ertz | 10 | Daughter | — | Missouri |
| 13 | Helen Ertz | 9 | Daughter | — | Missouri |
| 14 | Annabelle Ertz | 7 | Daughter | — | Montana |
| 15 | Frederick Ertz | 4 | Son | — | Idaho |
| 16 | Emil Balsemer | 46 | Head | Farmer | Germany |
| 17 | Josephine Balsemer | 36 | Wife | — | Wisconsin |
| 18 | Edna Balsemer | 6 | Son | — | Idaho |
| 19 | Myrtle Balsemer | 1 | Daughter | — | Idaho |
| 20 | Edna Page | 32 | Head | — | Wisconsin |
| 21 | Glenn Page | 17 | Son | — | Idaho |
| 22 | Dorothy Page | 15 | Daughter | — | Idaho |
| 23 | Philip Page | 12 | Son | — | Idaho |
| 24 | Joel Douglas | 60 | Head | Farmer | New York |
| 25 | Mary Douglas THIS PERSON | 51 | Wife | — | Iowa |
| 26 | Gertrude Douglas | 19 | Daughter | — | Idaho |
| 27 | Clifton Douglas | 17 | Son | — | Idaho |
| 28 | Lavina Douglas | 15 | Daughter | — | Idaho |
| 29 | Ray Douglas | 14 | Son | — | Idaho |
| 30 | Hazel Douglas | 13 | Daughter | — | Idaho |
| 31 | Florence Douglas | 11 | Daughter | — | Idaho |
| 32 | Kathleen Douglas | 10 | Daughter | — | Idaho |
| 33 | James Douglas | 6 | Son | — | Idaho |
| 34 | Beulah Alexander | 24 | Daughter | Teacher | Idaho |
| 35 | Edward Eskew | 44 | Head | Laborer | Nebraska |
| 36 | Iva Eskew | 37 | Wife | — | Missouri |
| 37 | Ethel Eskew | 17 | Daughter | — | Montana |
| 38 | Edna Eskew | 13 | Daughter | — | Montana |
| 39 | Myrtle Eskew | 10 | Daughter | — | Montana |
| 40 | Richard Peters | 42 | Head | Laborer | Wisconsin |
| 41 | Bertha Peters | 32 | Wife | — | North Dakota |
| 42 | Arthur Peters | 3 | Son | — | Idaho |
| 43 | Ole Settel | 33 | Head | Laborer | Norway |
| 44 | Mary Settel | 22 | Wife | — | Missouri |
| 45 | Hazel Settel | 2 | Daughter | — | Missouri |
| 46 | Harry Whitford | 45 | Head | Sawyer | North Dakota |
| 47 | Louise Whitford | 31 | Wife | — | Canada English |
| 48 | Thomas Whitford | 13 | Son | — | Montana |
| 49 | Harvey Whitford | 7 | Son | — | Montana |
| 50 | Simon Whitford | 4 | Son | — | Montana |
Related Census Records
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)