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Mary Mcdonald — 1920 US Census Record
Model Tree available1920 United States Federal Census · San Bernardino, California
Our Model Tree links this Mary Mcdonald across the 1920, 1930 and 1940 US Censuses in San Bernardino, California (XGBoost, ~Confirmed), with identified parents Floy — first a daughter (b.~1915), then head of a 5-person household.
Age 5
b. ~1915
Female
Daughter
Born: California
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | San Bernardino, California |
| Surname | McDonald |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Redlands City |
| Est. Birth Year | ~1915 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcdonald | Daughter | — | 5 | ~1915 |
| Flora Mcdonald | Daughter | — | 17 | ~1903 |
| Floy Mcdonald | Head | — | 51 | ~1869 |
| Harold Mcdonald | Son | — | 20 | ~1900 |
| Charles Mcdonald | Son | — | 25 | ~1895 |
Census Appearances
1920
San Bernardino, …
Daughter, age 5
San Bernardino, California · implied b. ~1915 — 5 household members
| Surname | McDonald |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Bernardino, …
Daughter, age 15
San Bernardino, California · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Margie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Veteran | no |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Bernardino-County, California
Spouse, age 25
San-Bernardino-County, California · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Margie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Glendora |
| 1935 Residence (County) | Los Angeles |
| Hours Worked | 5 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Mcdonald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Floy Mcdonald (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Floy Mcdonald
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Mcdonald
Daughter · 1920 · age 5 · b. ~1915 · California
★ You are viewing this record
Sibling
Flora Mcdonald
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mcdonald
Sibling · 1920 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Mcdonald
Sibling · 1920 · 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
1920 US Federal Census — San Bernardino, California
Open full size
1920 US Federal Census — San Bernardino, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu129unit:0410)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rubin W Palmer | 55 | Head | Gardener | Missouri |
| 2 | Edward H Merriam | 67 | Head | Laborer | Connecticut |
| 3 | Ruth A Smith | 70 | Head | — | New Hampshire |
| 4 | Edna B Blackwood | 34 | Piece | — | Massachusetts |
| 5 | E Stephen Austin | 31 | Nephew | — | Massachusetts |
| 6 | Leonard Maine | 20 | Head | Truck Driver | California |
| 7 | Marguerite Maine | 19 | Wife | — | Missouri |
| 8 | Samuel Holmes | 58 | Head | — | Illinois |
| 9 | Elizabeth Holmes | 52 | Wife | — | Iowa |
| 10 | Loren Holmes | 14 | Son | — | Kansas |
| 11 | Vera Holmes | 8 | Daughter | — | Kansas |
| 12 | John S Hunt | 33 | Head | Mechanic | Iowa |
| 13 | Alice E Hunt | 31 | Wife | — | Iowa |
| 14 | John S Jr Hunt | 2 | Son | — | Missouri |
| 15 | Graham Dennison | 28 | Brother-in-law | Merchant | Colorado |
| 16 | Harriet Dennison | 28 | Sister-in-law | — | Iowa |
| 17 | Pearl Dennison | 7 | Niece | — | Colorado |
| 18 | Hiram Dotson | 45 | Head | Fruit Farmer | West Virginia |
| 19 | Dora Dotson | 43 | Wife | — | Georgia |
| 20 | Elijah A Bethurum | 46 | Head | Agent | Kentucky |
| 21 | Mary Bethurum | 42 | Wife | — | Washington |
| 22 | William Bethurum | 15 | Son | — | California |
| 23 | Walter Bethurum | 13 | Son | — | California |
| 24 | Eugene Bethurum | 10 | Son | — | California |
| 25 | Charles Bethurum | 9 | Son | — | California |
| 26 | Ruby Bethurum | 7 | Daughter | — | California |
| 27 | Arthur Bethurum | 3 | Son | — | California |
| 28 | S L Read | 67 | Head | — | Ohio |
| 29 | Catherine Fries | 43 | Boarder | Canvasser | Wisconsin |
| 30 | Clement C Asher | 60 | Head | Farmer | Ohio |
| 31 | Mollie L Asher | 60 | Wife | — | Illinois |
| 32 | Minnie Asher | 24 | Daughter | — | Illinois |
| 33 | John B Carr | 55 | Head | Painter | Ohio |
| 34 | Sarah Carr | 52 | Wife | — | Illinois |
| 35 | Samuel Carr | 16 | Son | Messenger | California |
| 36 | William C Collett | 41 | Head | Nurseryman | Ohio |
| 37 | Julia Collett | 42 | Wife | — | Ohio |
| 38 | Salmon Collett | 9 | Son | — | California |
| 39 | Floy Mcdonald | 51 | Head | — | Illinois |
| 40 | Charles B Mcdonald | 25 | Son | Fertilizer | So Dakota |
| 41 | Harold W Mcdonald | 20 | Son | Tractor | Colorado |
| 42 | Flora Mcdonald | 17 | Daughter | — | California |
| 43 | Mary E Mcdonald THIS PERSON | 5 | Daughter | — | California |
| 44 | Samuel Vila | 62 | Head | Gardener | England |
| 45 | Mary L Vila | 52 | Wife | — | England |
| 46 | Richard S Bevan | 66 | Head | Farmer | Illinois |
| 47 | Bessie M Bevan | 59 | Wife | — | Illinois |
| 48 | Alice M Bevan | 31 | Daughter | — | Illinois |
| 49 | Gwendolyn Bevan | 3 | Granddaughter | — | Illinois |
| 50 | Robert A Bevan | 1 | Grandson | — | Illinois |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)