John Monahan — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Rensselaer-County, New York

Our Model Tree links this John Monahan across the 1920, 1930 and 1940 US Censuses in Rensselaer-County, New York (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 2-person household.

Age 70 b. ~1870 Male Head Born: England Widowed

1940 Census Record Details

Census Year	1940
Location	Rensselaer-County, New York
Surname	Monahan
Given Name	John (X)
Relationship to Head	Head
Sex	M
Color / Race	White
Age	70
Marital Status	Widowed
Birthplace	England
1935 Residence (City)	Troy
1935 Residence (County)	Rensselaer
Naturalization Status	Naturalized
Additional Details
Occupation	Street Sweeper
Industry	Public Works
Class of Worker	GW
Hours Worked	30
Income (1939)	486
Highest Grade	No 3
1935 Residence	Same place
Birth Country	England
Birthplace (normalized)	england
Occupation	Street Sweeper
Township / Ward	Troy
Est. Birth Year	~1870

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.

2 people recorded at the same address in the 1940 census.

Name	Relation to head	Relative to John	Age	Birth yr
John Monahan	Head	—	70	~1870
Frank Monahan	Son	—	29	~1911

Census Appearances

1920

Rensselaer, New …

Head, age 49

Rensselaer, New York · implied b. ~1871 — 10 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Monahan
Given Name	John F
Relationship to Head	Head
Sex	M
Color / Race	White
Age	49
Marital Status	Married
Birthplace	England
Year of Immigration	1870
Naturalization Status	Naturalized
Father's Birthplace	England
Mother's Birthplace	Ireland
Occupation	Motorman
Industry	Street car
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Home Owned/Rented	O
Home Free/Mortgaged	M
Birth Country	England
Birthplace (normalized)	england

1930

Rensselaer, New …

Head, age 58

Rensselaer, New York · implied b. ~1872 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Monahan
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	58
Marital Status	Married
Birthplace	England
Naturalization Status	Naturalized
Year of Immigration	1884
Age at First Marriage	22
Father's Birthplace	England
Mother's Birthplace	England
Occupation	Bridge Tender
Industry	(X)
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	English
Home Owned/Rented	O
Home Value / Rent	4500
Radio Set	R
Veteran	No
Birth Country	England
Birthplace (normalized)	england

1940

Rensselaer-County, New …

Head, age 70

Rensselaer-County, New York · implied b. ~1870 — 2 household members

Surname	Monahan
Given Name	John (X)
Relationship to Head	Head
Sex	M
Color / Race	White
Age	70
Marital Status	Widowed
Birthplace	England
1935 Residence (City)	Troy
1935 Residence (County)	Rensselaer
Naturalization Status	Naturalized
Occupation	Street Sweeper
Industry	Public Works
Class of Worker	GW
Hours Worked	30
Income (1939)	486
Highest Grade	No 3
1935 Residence	Same place
Birth Country	England
Birthplace (normalized)	england

Model Tree

Linked across censuses

Our Model Tree links John Monahan 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 Monahan

Head · 1940 · age 70 · b. ~1870 · New York

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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 — Rensselaer-County, New York Open full size

Page Contents

37 people indexed on this census page (nara:1940:m-t0627-02758-00158)

Line	Name	Age	Relation	Occupation	Birthplace
41	John H. Southwick	44	Head	Truck Driver	New York
42	Corinne Southwick	38	Wife	—	New York
43	Randall Southwick	18	Son	Clerk	New York
44	Dorothy Southwick	16	Daughter	—	New York
45	Marion Southwick	9	Daughter	—	New York
46	Joan Southwick	7	Daughter	—	New York
47	Shirley Southwick	3	Daughter	—	New York
48	Hugh Murphy	49	Head	Garage Foreman	New York
49	Mary (X) Murphy	47	Wife	—	New York
50	Helene Murphy	14	Daughter	—	New York
51	Joan Murphy	11	Daughter	—	New York
52	Jean Murphy	8	Daughter	—	New York
54	John N. Haigie	36	Head	Mechanic	Illinois
55	Mildred Haigie	36	Wife	Machine Operator	Illinois
56	Betty Jean Haigie	15	Daughter	—	Illinois
58	Mary (X) Voelker	62	Head	—	Germany
59	Otto Voelker	39	Son	Clerk	New York
60	Marion Voelker	38	Daughter	Machine Transcriber	New York
61	John (X) Monahan THIS PERSON	70	Head	Street Sweeper	England
62	Frank Monahan	29	Son	Painter	New York
63	Edward (X) Lyons	52	Head	Seaman	New York
64	Gertrude V. Lyons	44	Wife	Telephone Operator	New York
65	Thomas Monahan	35	Brother-in-law	—	New York
66	Anna Monahan	45	Sister-in-law	Telephone Operator	New York
68	William Abrams	39	Head	Manager	New York
69	Helen (X) Abrams	38	Wife	—	Poland
70	Evelyn Abrams	17	Daughter	—	New York
71	Martin Abrams	14	Son	—	New York
72	Beverley Abrams	5	Daughter	—	New York
73	Walter Allen	40	Head	Printer	Massachusetts
74	Isabelle Allen	30	Wife	—	New York
75	Barbara Allen	8	Daughter	—	New York
76	Jean Allen	7	Daughter	—	New York
77	Leslie Miller	43	Head	Accountant	New York
78	Julia Miller	42	Wife	Clerk	Massachusetts
79	Harold Manley	33	Head	Repairman	Vermont
80	Catherine Manley	32	Wife	—	New York

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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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