MC
Mary Coughlin — 1930 US Census Record
Linked across censuses1930 United States Federal Census · King, Washington
Our Model Tree links this Mary Coughlin across the 1920 and 1930 US Censuses in King, Washington (XGBoost, ~Confirmed) — first a daughter (b.~1908), then head of a 10-person household.
Age 22
b. ~1908
Female
Daughter
Born: Washington
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | King, Washington |
| Surname | Coughlin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Occupation | Dishwasher |
| Industry | Soda Fountain |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Dishwasher |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1908 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Christopher Coughlin | Son | — | 20 | ~1910 |
| Francis Coughlin | Son | — | 18 | ~1912 |
| Clarence Rupert | Other | — | 27 | ~1903 |
| Clarice Coughlin | Daughter | — | 8 | ~1922 |
| William Coughlin | Head | — | 48 | ~1882 |
| Maria Coughlin | Other | — | 49 | ~1881 |
| Gertrude Coughlin | Daughter | — | 24 | ~1906 |
| Norma Coughlin | Daughter | — | 15 | ~1915 |
| Mary Coughlin | Daughter | — | 22 | ~1908 |
| Martha Coughlin | Daughter | — | 22 | ~1908 |
Census Appearances
1920
King, Washington
Daughter, age 11
King, Washington · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coughlin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Daughter, age 22
King, Washington · implied b. ~1908 — 10 household members
| Surname | Coughlin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Indiana |
| Occupation | Dishwasher |
| Industry | Soda Fountain |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 Coughlin across 2 US Census years (1920 and 1930) in King, Washington, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Coughlin
Daughter · 1930 · age 22 · b. ~1908 · Washington
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Sibling
Martha Coughlin
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Coughlin
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norma Coughlin
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarice Coughlin
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Coughlin
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christopher Coughlin
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 — King, Washington
Open full size
1930 US Federal Census — King, Washington
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2493unit:0346)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Grandpre | 50 | Head | Manager | Michigan |
| 2 | Anna Grandpre | 48 | Wife-H | — | Wisconsin |
| 3 | William E. Grandpre | 18 | Son | Sign Painter | Washington |
| 4 | Constance Hagen | 25 | Lodger | Operator | Washington |
| 5 | Iver Christoffersen | 62 | Head | Fisherman | Norway |
| 6 | Ellen Christoffersen | 57 | Wife-H | — | Norway |
| 7 | Charles Christoffersen | 23 | Son | Gate Man | Washington |
| 8 | Sars J. Hansen | 74 | Head | Retired | Norway |
| 9 | Josephine Hansen | 70 | Wife-H | — | Sweden |
| 10 | Albert A. Mowat | 53 | Lodger | Fisherman | Norway |
| 11 | Edvin Peterson | 24 | Head | Fisherman | Norway |
| 12 | Gulang Peterson | 20 | Wife-H | — | Norway |
| 13 | Leland Peterson | 1 | Son | — | Washington |
| 14 | Thomas Carroll | 43 | Head | Saw Filer | Wisconsin |
| 15 | Edna Carroll | 39 | Wife-H | — | North Dakota |
| 16 | Axel Johnson | 51 | Head | Grader | Sweden |
| 17 | Nora Johnson | 40 | Wife-H | — | Norway |
| 18 | Violet Johnson | 21 | Daughter | Stenographer | Washington |
| 19 | Harry Johnson | 18 | Son | Clerk | Washington |
| 20 | William Coughlin | 48 | Head | Repairman | Massachusetts |
| 21 | Maria Coughlin | 49 | Wife-H | — | Indiana |
| 22 | Gertrude Coughlin | 24 | Daughter | — | Washington |
| 23 | Martha Coughlin | 22 | Daughter | Stenographer | Washington |
| 24 | Mary Coughlin THIS PERSON | 22 | Daughter | Dishwasher | Washington |
| 25 | Christopher Coughlin | 20 | Son | — | Washington |
| 26 | Francis Coughlin | 18 | Son | Butcher | Washington |
| 27 | Norma Coughlin | 15 | Daughter | — | Washington |
| 28 | Clarice Coughlin | 8 | Daughter | — | Washington |
| 29 | Clarence Rupert | 27 | Lodger | Brick Layer | Washington |
| 30 | Minnie Smith | 56 | Head | — | Maine |
| 31 | Andrew Smith | 20 | Son | Stock Boy | Washington |
| 32 | William Ree | 50 | Head | Sawyer | Scotland |
| 33 | Mary B. Ree | 50 | Wife-H | — | Scotland |
| 34 | James Ree | 23 | Son | Machinist | Canada |
| 35 | William Ree | 12 | Son | — | Canada |
| 36 | Will Russ | 46 | Head | Janitor | Illinois |
| 37 | Martha B. Russ | 39 | Wife-H | — | Missouri |
| 38 | Charles W. Russ | 15 | Son | — | Colorado |
| 39 | Billy E. Russ | 13 | Son | — | Colorado |
| 40 | Loraine G. Russ | 11 | Daughter | — | Washington |
| 41 | Richard G. Russ | 1 | Son | — | Washington |
| 42 | Nels Walberg | 34 | Head | Fisherman | Norway |
| 43 | Agnes Walberg | 26 | Wife-H | — | Norway |
| 44 | Lyla Walberg | 6 | Daughter | — | Minnesota |
| 45 | Lewis Simpkins | 44 | Head | — | Minnesota |
| 46 | Minnie Simpkins | 11 | Daughter | — | Washington |
| 47 | Thelma Simpkins | 8 | Daughter | — | Washington |
| 48 | Alvin Simpkins | 8 | Son | — | Washington |
| 49 | Oscar Melly | 21 | Head | Laborer | North Dakota |
| 50 | Mary Melly | 19 | Wife-H | — | North Dakota |
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)