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Mary Mcdonald — 1930 US Census Record
Model Tree available1930 United States Federal Census · King, Washington
Our Model Tree links this Mary Mcdonald across the 1920, 1930 and 1940 US Censuses in King, Washington (XGBoost, ~Confirmed), with identified parents James & Alma — first a daughter (b.~1914), then head of a 2-person household.
Age 16
b. ~1914
Female
Daughter
Born: Washington
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | King, Washington |
| Surname | McDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Sweden |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Township / Ward | Seattle City Part Of |
| Est. Birth Year | ~1914 |
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.
2 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcdonald | Daughter | — | 16 | ~1914 |
| Alma Mcdonald | Head | — | 44 | ~1886 |
Census Appearances
1920
King, Washington
Daughter, age 6
King, Washington · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Daughter, age 16
King, Washington · implied b. ~1914 — 2 household members
| Surname | McDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Daughter, age 26
King-County, Washington · implied b. ~1914
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Macdonald |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | No No No U |
| Class of Worker | U |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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: father James Mcdonald (~0.92 confidence) and mother Alma Mcdonald (~0.92 confidence) and mother Alma Mcdonald (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Mcdonald
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Alma Mcdonald
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Alma Mcdonald
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Mcdonald
Daughter · 1930 · age 16 · b. ~1914 · Washington
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — King, Washington
Open full size
1930 US Federal Census — King, Washington
Page Contents
48 people indexed on this census page (ia:1930:15thcensus2494unit:0214)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Gilbert Olson | 89 | Brother | — | Norway |
| 52 | Mettie Olson | 79 | Mother | — | Norway |
| 53 | James Pruitt | 68 | Head | — | England |
| 54 | Annie Pruitt | 64 | Wife-H | — | England |
| 55 | Morris Trower | 41 | Head | — | Minnesota |
| 56 | Virginia M. Trower | 15 | Daughter | — | Washington |
| 57 | Alma Mcdonald | 44 | Head | Chambermaid | Sweden |
| 58 | Mary Mcdonald THIS PERSON | 16 | Daughter | — | Washington |
| 59 | Margaret J. Martin | 65 | Head | — | Canada-English |
| 60 | Minnie M. Martin | 25 | Daughter | Bookkeeper | Washington |
| 61 | Charles E. Cote | 42 | Head | Longshoreman | Wisconsin |
| 62 | Helen E. Cote | 37 | Wife-H | — | Wisconsin |
| 63 | Charles E. Cote | 3 | Son | — | Washington |
| 64 | Maxine V. Cote | 0 | Daughter | — | Washington |
| 65 | Earl Haugh | 18 | Step-son | Messenger | Washington |
| 66 | Chester V. Haugh | 12 | Step-son | — | Alaska |
| 67 | Helen Head | 17 | Niece | — | Washington |
| 68 | Albert H. Studeman | 46 | Head | — | Wisconsin |
| 69 | Dora Studeman | 39 | Wife-H | Waitress | Washington |
| 70 | Jessie Giddings | 22 | Niece | Stenographer | Washington |
| 71 | Alex Zuker | 40 | Head | Boiler Maker | Poland |
| 72 | John Lee | 49 | Head | Laborer | Ohio |
| 73 | Helen Lee | 37 | Wife-H | — | England |
| 74 | Harry Lee | 11 | Son | — | Washington |
| 75 | Charles Lee | 9 | Son | — | Washington |
| 76 | Clarence Lee | 9 | Son | — | Washington |
| 77 | John Lee | 4 | Son | — | Washington |
| 78 | John Rosenquist | 61 | Head | Shoe Maker | Sweden |
| 79 | Anna Rosenquist | 67 | Wife-H | — | Sweden |
| 80 | Oscar E. Rosenquist | 34 | Son | Boat Repairman | Sweden |
| 81 | Gustaf F. Rosenquist | 30 | Son | Boat Repairman | Sweden |
| 82 | Erika M. Rosenquist | 27 | Daughter | — | Minnesota |
| 83 | Emelia Person | 64 | Sister | Servant | Sweden |
| 84 | Andrew Sandberg | 42 | Boarder | Cabinet Maker | Sweden |
| 85 | Viola V. Sandberg | 5 | Boarder | — | Washington |
| 86 | Hester Quady | 68 | Head | — | Illinois |
| 87 | Harvey Floket | 31 | Head | Packer | Colorado |
| 88 | Eva Floket | 30 | Wife-H | Waitress | Michigan |
| 89 | Earnest R. Curry | 9 | Step-son | — | Colorado |
| 90 | Myrna Curry | 6 | Step-daughter | — | Colorado |
| 91 | Carl J. Carlson | 51 | Head | Ship Carpenter | Sweden |
| 92 | Anna Carlson | 41 | Wife-H | Apartment Manager | Sweden |
| 93 | George W. Carlson | 13 | Son | — | Washington |
| 94 | George E. Winniman | 38 | Head | Machinist | Wisconsin |
| 95 | Lillian E. Winniman | 34 | Wife-H | Baker | Wisconsin |
| 98 | Hendrik Postma | 38 | Head | Laborer | Holland |
| 99 | Johanna D. Postma | 33 | Wife-H | — | Holland |
| 100 | Mildred Litwin | 29 | Head | Laundress | Poland |
Pedigree Summary
Mary
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)