John Leonard — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · King-County, Washington

Our Model Tree links this John Leonard across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 5-person household.

Age 53 b. ~1887 Male Head Born: Colorado Married

1940 Census Record Details

Census Year	1940
Location	King-County, Washington
Surname	Leonard
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Colorado
1935 Residence (City)	Seattle City
1935 Residence (County)	King
Additional Details
Occupation	Machinist
Industry	Machine shop
Class of Worker	PW
Hours Worked	40
Income (1939)	1180
Highest Grade	H 2
1935 Residence	Same place
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado
Occupation	Machinist
Township / Ward	Seattle City
Est. Birth Year	~1887

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 1940 census.

Name	Relation to head	Relative to John	Age	Birth yr
Ina Leonard	Daughter	—	20	~1920
John Leonard	Head	—	53	~1887
Ina Murray	Other	—	71	~1869
William Leonard	Son	—	22	~1918
Mabel Leonard	Spouse	—	53	~1887

Census Appearances

1920

King, Washington

Head, age 33

King, Washington · implied b. ~1887 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Leonard
Given Name	John J
Relationship to Head	Head
Sex	M
Color / Race	White
Age	33
Marital Status	Married
Birthplace	Colorado
Father's Birthplace	Ohio
Mother's Birthplace	Pennsylvania
Occupation	Machinist
Industry	Railroad Co
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	R
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

1930

King, Washington

Head, age 43

King, Washington · implied b. ~1887 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Lemard
Given Name	John W.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Colorado
Age at First Marriage	24
Father's Birthplace	Ohio
Mother's Birthplace	Wyoming
Occupation	Machinist
Industry	Repair Shop
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	35
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

1940

King-County, Washington

Head, age 53

King-County, Washington · implied b. ~1887 — 5 household members

Surname	Leonard
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Colorado
1935 Residence (City)	Seattle City
1935 Residence (County)	King
Occupation	Machinist
Industry	Machine shop
Class of Worker	PW
Hours Worked	40
Income (1939)	1180
Highest Grade	H 2
1935 Residence	Same place
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

Model Tree

Linked across censuses

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

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This person

Anchor record

John Leonard

Head · 1940 · age 53 · b. ~1887 · 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-t0627-04374-00391)

Line	Name	Age	Relation	Occupation	Birthplace
41	Evelyn Anderson	42	Head	Teacher	Washington
42	Evelyn Alinder	19	Niece	—	Washington
43	Leona Alinder	18	Niece	—	Washington
44	John Leonard THIS PERSON	53	Head	Machinist	Colorado
45	Mabel Leonard	53	Wife	—	Nebraska
46	William Leonard	22	Son	Riveter	Utah
47	Ina Leonard	20	Daughter	Asst Clerk	Washington
48	Ina Murray	71	Mother-in-law	—	Illinois
49	Horace A. Grubb	58	Head	Laborer	Illinois
50	Alice R. Grubb	48	Wife	—	Colorado
51	William Brichton	72	Head	Sawyer	Scotland
52	Bessie Brichton	62	Wife	—	Canada Eng
53	Roy J. Corson	47	Head	Auto Factory Service	Montana
54	Mary Corson	35	Wife	—	Oregon
55	Anne Corson	15	Daughter	—	Washington
56	Jack Corson	14	Son	—	Washington
57	Nelson Sewell	81	Head	—	Canada Eng
58	Annie Sewell	78	Wife	—	Washington
59	William Sewell	56	Son	—	Washington
60	Ben D. Johnson	24	Head	Laborer	Washington
61	Marjorie Johnson	18	Wife	—	Washington
62	Perna Johnson	1	Daughter	—	Washington
63	Infant Donald Johnson	0	Son	—	Washington
64	Willis Johnson	53	Head	Janitor	Michigan
65	Edna G. Johnson	43	Wife	—	Washington
66	Laurel Johnson	22	Son	Laborer	Washington
67	Beverly Johnson	18	Daughter	—	Washington
68	Ellen Johnson	16	Daughter	—	Washington
69	Earl Johnson	15	Son	—	Washington
70	Eunice Johnson	13	Daughter	—	Washington
71	Lorraine Johnson	11	Daughter	—	Washington
72	George Dixon	57	Head	Sawyer	Texas
73	Isabel Dixon	55	Wife	Janitress	Indiana
74	Irving Delay	35	Boarder	Culinary Work	Missouri
75	Clarence Roberts	28	Head	Gardener	Washington
76	Mary Roberts	27	Wife	—	Washington
77	Robert Roberts	5	Son	—	Washington
78	Dale Roberts	3	Son	—	Washington
79	Henry Seagraves	68	Head	—	Illinois
80	Lina Seagraves	70	Wife	—	Missouri

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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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