John Hayden — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Baltimore-City-County, Maryland

Our Model Tree links this John Hayden across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1906), then head of a 3-person household.

Age 34 b. ~1906 Male Head Born: Maryland Married

1940 Census Record Details

Census Year	1940
Location	Baltimore-City-County, Maryland
Surname	Hayden
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	34
Marital Status	Married
Birthplace	Maryland
1935 Residence (City)	Baltimore City
1935 Residence (County)	Baltimore City
Additional Details
Occupation	Laborer
Industry	Wharf Construction
Class of Worker	GW
Hours Worked	12
Income (1939)	534
Highest Grade	No 5
1935 Residence	Same place
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland
Occupation	Laborer
Township / Ward	Baltimore City
Est. Birth Year	~1906

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 John	Age	Birth yr
John Hayden	Head	—	34	~1906
Jerome Hayden	Son	—	6	~1934
Margaret Hayden	Spouse	—	29	~1911

Census Appearances

1920

Baltimore, Maryland

Other, age 13

Baltimore, Maryland · implied b. ~1907 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hayden
Given Name	John
Relationship to Head	Grandson
Sex	M
Color / Race	White
Age	13
Marital Status	Single
Birthplace	Maryland
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

1930

Baltimore, Maryland

Head, age 24

Baltimore, Maryland · implied b. ~1906 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hayden
Given Name	John L.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	24
Marital Status	Married
Birthplace	Maryland
Age at First Marriage	19
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Occupation	Printer
Industry	Job Printing
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	$25
Radio Set	R
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

1940

Baltimore-City-County, Maryland

Head, age 34

Baltimore-City-County, Maryland · implied b. ~1906 — 3 household members

Surname	Hayden
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	34
Marital Status	Married
Birthplace	Maryland
1935 Residence (City)	Baltimore City
1935 Residence (County)	Baltimore City
Occupation	Laborer
Industry	Wharf Construction
Class of Worker	GW
Hours Worked	12
Income (1939)	534
Highest Grade	No 5
1935 Residence	Same place
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

Model Tree

Linked across censuses

Our Model Tree links John Hayden 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 Hayden

Head · 1940 · age 34 · b. ~1906 · Maryland

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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 — Baltimore-City-County, Maryland Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01509-00749)

Line	Name	Age	Relation	Occupation	Birthplace
41	Joseph Radzeles	51	Partner	Presser	Lithuania
42	Melvin Hammonds	24	Head	Clerk	Maryland
43	Tillie Hammonds	23	Wife	Operator	Maryland
44	Evelyn Hammonds	4	Daughter	—	Maryland
45	Vincent Cubottas	27	Head	Huckster	Maryland
46	Anita Cubottas	19	Wife	—	Italy
47	Sarah Zing	43	Head	—	Russia
48	Oscar Zing	17	Son	Route Boy	Maryland
49	Anna Barbarino	80	Lodger	—	Italy
50	John P. Voight	42	Head	—	Maryland
51	John Hayden THIS PERSON	34	Head	Laborer	Maryland
52	Margaret Hayden	29	Wife	—	Maryland
53	Jerome Hayden	6	Son	—	Maryland
54	Peter Velli	36	Head	Terrazzo Worker	Maryland
55	Catherine Velli	32	Wife	—	Maryland
56	Genevieve Velli	14	Daughter	—	Maryland
57	Marion Velli	11	Daughter	—	Maryland
58	Donald Velli	9	Son	—	Maryland
59	Antonio Leherkowski	56	Lodger	—	Lithuania
60	Jean Morawet	38	Lodger	Beautician	Maryland
61	Vincent Guerattavoli	54	Lodger	Roller	Poland
62	Charles Connolly	57	Lodger	Handy Repair Man	Maryland
63	Harry Nicholson	47	Lodger	Salesman	Greece
64	Pasquale Spada	68	Lodger	Laborer	Italy
65	Henry S. Beal	40	Lodger	Heelman	Maryland
66	Robert Evans	70	Lodger	—	Maryland
67	Beatrice Owens	30	Lodger	Maid	Maryland
68	Ellis Leven	44	Partner	Proprietor	Maryland
69	Louis Leven	46	Head	Proprietor	Maryland
70	Harry Scoggins	68	Lodger	—	Maryland
71	Petronella Stefanowicz	46	Head	Seamstress	Lithuania
72	Chester Stefanowicz	23	Son	Painter	Maryland
73	Walter Stefanowicz	20	Son	Chauffeur	Maryland
74	Jane Stefanowicz	16	Daughter	—	Maryland
75	Peter Stefanowicz	11	Son	—	Maryland
76	Samuel Scalini	50	Head	Stevedore	Italy
77	Joseph Scalini	25	Son	Delivery Truck Driver	Maryland
78	Bonanno Carmello	43	Head	Bricklayer	Italy
79	Angeline Carmello	43	Wife	Seamstress	Italy
80	Mary Carmello	18	Daughter	—	Maryland

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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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