JH
John Harrington — 1930 US Census Record
Linked across censuses1930 United States Federal Census · King, Washington
Our Model Tree links this John Harrington across the 1920, 1930 and 1940 US Censuses in King, Washington (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 3-person household.
Age 35
b. ~1895
Male
Head
Born: Montana
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | King, Washington |
| Surname | Harrington |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Montana |
| Age at First Marriage | 24 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Occupation | Police Officer |
| Industry | City of Seattle |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35.00 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Occupation | Police Officer |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1895 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Harrington | Head | — | 35 | ~1895 |
| Edna Harrington | Other | — | 33 | ~1897 |
| John Harrington | Son | — | 10 | ~1920 |
Census Appearances
1920
King, Washington
Head, age 25
King, Washington · implied b. ~1895 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrington |
| Given Name | John F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Montana |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Ireland |
| Occupation | Policeman |
| Industry | City |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
King, Washington
Head, age 35
King, Washington · implied b. ~1895 — 3 household members
| Surname | Harrington |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Montana |
| Age at First Marriage | 24 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Irish Free State |
| Occupation | Police Officer |
| Industry | City of Seattle |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35.00 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
King-County, Washington
Head, age 45
King-County, Washington · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrington |
| Given Name | J. Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Montana |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Post Office |
| Industry | City |
| Class of Worker | GW |
| Hours Worked | 56 |
| Income (1939) | 1604 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| 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 John Harrington across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Harrington
Head · 1930 · age 35 · b. ~1895 · Washington
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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 — King, Washington
Open full size
1930 US Federal Census — King, Washington
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2502unit:0942)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank A Murray | 39 | Head | Cable Splicer | Missouri |
| 2 | Mabel C Murray | 37 | Wife-H | — | Idaho |
| 3 | Ernest G Murray | 15 | Son | — | Idaho |
| 4 | Frank A Jr Murray | 14 | Son | — | Idaho |
| 5 | George A Murray | 33 | Brother | Cable Splicer | Missouri |
| 6 | Edwin Grenfell | 45 | Head | Circulation Manager | England |
| 7 | Florence E Grenfell | 44 | Wife-H | — | Minnesota |
| 8 | Randolph F Grenfell | 15 | Son | — | Washington |
| 9 | Quentin R Grenfell | 12 | Son | — | Washington |
| 10 | Florence B Haddon | 22 | Daughter | — | Washington |
| 11 | Ralph H Haddon | 2 | Grandson | — | Washington |
| 12 | Ernest Humberstone | 47 | Head | Machinist Helper | England |
| 13 | Mary A Humberstone | 39 | Wife-H | — | England |
| 14 | Albert F Humberstone | 11 | Son | — | Canada-English |
| 15 | Edward E Humberstone | 10 | Son | — | Canada-English |
| 16 | Phyllis E Humberstone | 8 | Daughter | — | Canada-English |
| 17 | Frank Ethier | 32 | Head | Salesman | Washington |
| 18 | Cora L Ethier | 24 | Wife-H | — | Washington |
| 19 | Woodrow E Ethier | 17 | Brother | — | Washington |
| 20 | Martha R Jensen | 65 | Head-H | — | Switzerland |
| 21 | Otto Jensen | 35 | Son | Longshoreman | Illinois |
| 22 | Bessie L Thury | 59 | Head-H | — | Wisconsin |
| 23 | Lloyd A Nelson | 40 | Son | Auto Mechanic | Kansas |
| 24 | Charles N Young | 47 | Head | Auditor | Ohio |
| 25 | Haidee P Young | 45 | Wife-H | — | Washington |
| 26 | Paul B Muzzy | 38 | Head | Office Clerk | Washington |
| 27 | Lucie H Muzzy | 35 | Wife-H | — | Illinois |
| 28 | Don F Muzzy | 12 | Son | — | Washington |
| 29 | Richard C Muzzy | 10 | Son | — | Washington |
| 30 | Oscar A Nygren | 35 | Head | Office Assistant Manager | Washington |
| 31 | Olga A Nygren | 34 | Wife-H | — | South Dakota |
| 32 | Shirley L Nygren | 5 | Son | — | Washington |
| 33 | Bruce B Nygren | 2 | Son | — | Washington |
| 34 | John J Harrington THIS PERSON | 35 | Head | Police Officer | Montana |
| 35 | Edna E Harrington | 33 | Wife-H | — | Montana |
| 36 | John J Jr Harrington | 10 | Son | — | Washington |
| 37 | Earl F Cydell | 28 | Head | Circulator | Washington |
| 38 | Isabelle B Cydell | 25 | Wife-H | — | Washington |
| 39 | Douglas E Cydell | 1 | Son | — | Washington |
| 40 | John R Ely | 32 | Head | Garage Service Man | Iowa |
| 41 | Althea P Ely | 24 | Wife-H | — | Indiana |
| 42 | Robert H Ely | 2 | Son | — | Washington |
| 43 | Roberta M Ely | 2 | Daughter | — | Washington |
| 44 | Howard F Smith | 50 | Father-in-law | Machinist | Illinois |
| 45 | Thelma E Smith | 18 | Sister-in-law | General Office Work | Illinois |
| 46 | William H Arthur | 54 | Head | Longshoreman | Pennsylvania |
| 47 | Cora G Arthur | 41 | Wife-H | — | Wisconsin |
| 48 | Howard H Arthur | 13 | Son | — | Montana |
| 49 | William J Arthur | 10 | Son | — | Washington |
| 50 | Joseph S Phillips | 54 | Head | — | Pennsylvania |
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)