Mary Monahan — 1920 US Census Record

Linked across censuses

1920 United States Federal Census · New York, New York

Our Model Tree links this Mary Monahan across the 1920, 1930 and 1940 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a spouse (b.~1893), then head of a 4-person household.

Age 27 b. ~1893 Female Spouse Born: Ireland Married

1920 Census Record Details

Census Year	1920
Location	New York, New York
Surname	Monahan
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	27
Marital Status	Married
Birthplace	Ireland
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Additional Details
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland
Township / Ward	New York
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.

4 people recorded at the same address in the 1920 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Mary Monahan	Spouse	—	27	~1893
Josephine Monahan	Daughter	—	5	~1915
James Monahan	Head	—	36	~1884
Edward Monahan	Son	—	12	~1908

Census Appearances

1920

New York, …

Spouse, age 27

New York, New York · implied b. ~1893 — 4 household members

Surname	Monahan
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	27
Marital Status	Married
Birthplace	Ireland
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland

1930

Bronx, New …

Spouse, age 37

Bronx, New York · implied b. ~1893 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Monahan
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	37
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Alien
Year of Immigration	1922
Age at First Marriage	30
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read/Write	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

Queens-County, New …

Other, age 48

Queens-County, New York · implied b. ~1892 — 40 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Monahan
Given Name	Mabel
Sex	F
Color / Race	White
Age	48
Marital Status	Single
Birthplace	Ireland
1935 Residence (City)	N.Y. City
1935 Residence (County)	Queens
Naturalization Status	Naturalized
Highest Grade	H-4
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

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

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This person

Anchor record

Mary Monahan

Spouse · 1920 · age 27 · b. ~1893 · New York

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

Original Census Page

1920 US Federal Census — New York, New York Open full size

Page Contents

50 people indexed on this census page (ia:1920:14thcensusofpopu1190unit:0651)

Line	Name	Age	Relation	Occupation	Birthplace
51	Joseph Androfsky	30	Head	Meat	Poland
52	Margaret Androfsky	25	Wife	—	Poland
53	Mary Androfsky	4	Daughter	—	New York
54	Elsie Marchinsky	32	Head	—	Lithuania
55	Mary Marchinsky	5	Daughter	—	New York
56	Frank Marchinsky	2	Son	—	New York
57	Frank Valivany	24	Cousin	Candy	Lithuania
58	James Monahan	36	Head	Helper	Ireland
59	Mary Monahan THIS PERSON	27	Wife	—	Ireland
60	Edward Monahan	12	Son	—	New York
61	Josephine Monahan	5	Daughter	—	New York
62	John Lopes	32	Head	Painter	Italy
63	Catherine Lopes	34	Wife	—	New York
64	Michael Lopes	11	Son	—	New York
65	John Lopes	9	Son	—	New York
66	Elizabeth Lopes	3	Daughter	—	New York
67	Giuseppe Ledda	42	Head	Coffeeman	Italy
68	Anna Justina Ledda	55	Boarder	Handless	France
69	Peter Clerkin	44	Head	Sexton	Ireland
70	Mary Clerkin	44	Wife	—	Ireland
71	Frances Clerkin	17	Daughter	Typist	New York
72	Peter Clerkin	15	Son	Apprentice	New York
73	Anna Clerkin	14	Daughter	—	New York
74	Thomas Clerkin	12	Son	—	New York
75	William Clerkin	11	Son	—	New York
76	Helen Clerkin	8	Daughter	—	New York
77	William Baylis	44	Head	Dough Mix	Lithuania
78	Mary Baylis	32	Wife	—	Lithuania
79	Peter Baylis	14	Son	—	New York
80	Rose Baylis	7	Daughter	—	New York
81	George Baylis	4	Son	—	New York
82	Anthony Senkowsky	46	Boarder	Laborer	Lithuania
83	Stanley Bochefsky	27	Head	Machinist	Lithuania
84	Nellie Bochefsky	30	Wife	—	Lithuania
85	Alex Bochefsky	5	Son	—	New York
86	Rose Bochefsky	3	Daughter	—	New York
87	George Androwsky	40	Boarder	—	Lithuania
88	Peter Virgilis	27	Head	Cigarette	Lithuania
89	Elizabeth Virgilis	25	Wife	—	Lithuania
90	Joseph Virgilis	1	Son	—	New York
91	John Virgilis	0	Son	—	New York
92	Charles Wacas	28	Boarder	Hoses	Lithuania
93	Edward Stone	52	Head	Longshoreman	Sweden
94	Augusta Stone	49	Wife	—	Sweden
95	Arthur Stone	27	Son	Printer	New York
96	Rose Stone	22	Daughter	—	New York
97	Ethel Stone	20	Daughter	General Office	New York
98	Doris Stone	18	Daughter	Operator	New York
99	Alice Stone	15	Daughter	General Office	New York
100	Ellen Rhoades	60	Head	—	New York

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1920 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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