William Fitzpatrick — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · King-County, Washington

Our Model Tree links this William Fitzpatrick across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 3-person household.

Age 47 b. ~1893 Male Head Born: Montana Married

1940 Census Record Details

Census Year	1940
Location	King-County, Washington
Surname	Fitzpatrick
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	47
Marital Status	Married
Birthplace	Montana
1935 Residence (City)	City Seattle
1935 Residence (County)	King
Additional Details
Occupation	mechanic
Industry	Deisel Engine
Class of Worker	PW
Hours Worked	40
Income (1939)	2075
Highest Grade	Hs 4
1935 Residence	Same place
Birth State	Montana
Birth Country	United States
Birthplace (normalized)	montana
Occupation	Mechanic
Township / Ward	City Seattle
Est. Birth Year	~1893

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 1940 census.

Name	Relation to head	Relative to William	Age	Birth yr
William Fitzpatrick	Head	—	47	~1893
Mary Fitzpatrick	Daughter	—	9	~1931
Irma Fitzpatrick	Spouse	—	47	~1893

Census Appearances

1920

King, Washington

Head, age 27

King, Washington · implied b. ~1893 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Fitzpatrick
Given Name	William
Relationship to Head	head
Sex	M
Color / Race	White
Age	27
Marital Status	Married
Birthplace	Montana
Father's Birthplace	Minnesota
Mother's Birthplace	Minnesota
Occupation	marine engineer
Industry	boat
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Montana
Birth Country	United States
Year of Naturalization	R
Birthplace (normalized)	montana

1930

King, Washington

Head, age 37

King, Washington · implied b. ~1893 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Fitzpatrick
Given Name	William J
Relationship to Head	Head
Sex	M
Color / Race	White
Age	37
Marital Status	Married
Birthplace	Montana
Age at First Marriage	25
Father's Birthplace	Canada-Eng
Mother's Birthplace	Canada-Eng
Occupation	Factory Representative
Industry	Fairbanks Morse
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	55
Radio Set	R
Veteran	No
Birth State	Montana
Birth Country	United States
Birthplace (normalized)	montana

1940

King-County, Washington

Head, age 47

King-County, Washington · implied b. ~1893 — 3 household members

Surname	Fitzpatrick
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	47
Marital Status	Married
Birthplace	Montana
1935 Residence (City)	City Seattle
1935 Residence (County)	King
Occupation	mechanic
Industry	Deisel Engine
Class of Worker	PW
Hours Worked	40
Income (1939)	2075
Highest Grade	Hs 4
1935 Residence	Same place
Birth State	Montana
Birth Country	United States
Birthplace (normalized)	montana

Model Tree

Linked across censuses

Our Model Tree links William Fitzpatrick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

William Fitzpatrick

Head · 1940 · age 47 · b. ~1893 · Washington

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Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — King-County, Washington Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-04378-00267)

Line	Name	Age	Relation	Occupation	Birthplace
41	John W. Bigelow	54	Head	Organizer	Connecticut
42	Lena R. Bigelow	54	Wife	—	Nebraska
43	Otina Queen	48	Lodger	—	Sweden
44	William Fitzpatrick THIS PERSON	47	Head	Mechanic	Montana
45	Irma Fitzpatrick	47	Wife	—	Oregon
46	Mary Jane Fitzpatrick	9	Daughter	—	Washington
47	William E. Perkins	56	Head	Salesman	Illinois
48	Letitia Perkins	56	Wife	—	Minnesota
49	Jane Perkins	21	Daughter	—	Washington
50	William Perkins	14	Son	—	Washington
51	Helen R. Lunde	41	Head	Typist	Canada
52	Left Vacant Through Error	None	—	—	—
53	Milburn Harmon	49	Head	Salesman	Iowa
54	Birdie Harmon	48	Wife	—	Iowa
55	Betty V. Harmon	17	Daughter	—	Oklahoma
56	Billy A. Harmon	9	Son	—	Iowa
57	Clyde P. Horth	30	Head	Truck Salesman	Alaska
58	Laura J. Horth	33	Wife	—	Oregon
59	Kathleen Horth	3	Daughter	—	Washington
60	Edward C. Adams	45	Head	Lawyer	Massachusetts
61	Sarah Adams	42	Wife	—	Minnesota
62	Edward Adams	12	Son	—	District of Columbia
63	Here Ends Block 32 And Begins Block 33	None	Mount Solval	—	—
64	Carey Belue	53	Head	Salesman	Texas
65	Marguerite Belue	48	Wife	—	Washington
66	Robert Belue	21	Son	—	Washington
67	Ray Belue	17	Son	—	Washington
68	Frank W. Smith	66	Head	Broker	Maine
69	Hilda P. Smith	64	Wife	—	Pennsylvania
70	William H. Mcnamara	60	Head	Salesman	New Mexico
71	Mary Mcnamara	55	Wife	—	Missouri
72	James Miller	60	Head	Foreman	Illinois
73	Blanche S. Miller	57	Wife	—	Illinois
74	Florence E. Baker	55	Head	Housekeeper	Iowa
75	Mabelle Rose Baker	21	Daughter	—	Montana
76	Raymond Edgar Baker	19	Son	—	Montana
77	John F. Watt	22	Lodger	Attendant	Canada English
78	John H. Watt	52	Lodger	Proprietor	Montana
79	Arthur M. Watt	20	Lodger	Grocery Clerk	Montana
80	John R. Smart	23	Lodger	Shipping Clerk	Montana

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1940 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)

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