Mary Callahan — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · New York, New York

Our Model Tree links this Mary Callahan across the 1920, 1930 and 1940 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a spouse (b.~1871), then head of a 3-person household.

Age 59 b. ~1871 Female Spouse Born: Ireland Married

1930 Census Record Details

Census Year	1930
Location	New York, New York
Surname	Callahan
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	59
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Naturalized
Year of Immigration	1900
Age at First Marriage	15
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Additional Details
Occupation	Janitor
Industry	Apartment H
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland
Occupation	Janitor
Township / Ward	New York City Manhattan Borough
Est. Birth Year	~1871

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 1930 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Jeremiah Callahan	Head	—	66	~1864
William Callahan	Son	—	22	~1908
Mary Callahan	Spouse	—	59	~1871

Census Appearances

1920

Bronx, New …

Spouse, age 47

Bronx, New York · implied b. ~1873 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Callahan
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	47
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

New York, …

Spouse, age 59

New York, New York · implied b. ~1871 — 3 household members

Surname	Callahan
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	59
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Naturalized
Year of Immigration	1900
Age at First Marriage	15
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Janitor
Industry	Apartment H
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

New-York-County, New …

Other, age 68

New-York-County, New York · implied b. ~1872 — 40 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Callahan
Given Name	Margaret
Relationship to Head	Employee
Sex	F
Color / Race	White
Age	68
Marital Status	Single
Birthplace	Ireland
1935 Residence (City)	New York City
1935 Residence (County)	New York
Naturalization Status	First papers filed
Occupation	Maid
Industry	Hotel
Class of Worker	PW
Hours Worked	40
Income (1939)	500
Highest Grade	No 7
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

Our Model Tree links Mary Callahan 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 Callahan

Spouse · 1930 · age 59 · b. ~1871 · New York

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

Original Census Page

1930 US Federal Census — New York, New York Open full size

Page Contents

50 people indexed on this census page (ia:1930:newyorkcensus00reel1575:0453)

Line	Name	Age	Relation	Occupation	Birthplace
1	James Lynch	48	Head	—	New York
2	John Lynch	18	Son	—	New York
3	May Lynch	16	Daughter	—	New York
4	Alphonse Sciano	22	Son	Ice Man	New York
5	Walter Walker	43	Roomer	Labourer	New York
6	Eugene Brown	12	Boarder	—	New York
7	James Gaffney	45	Head	Labourer	New York
8	Margaret Gaffney	39	Wife	—	Ireland
9	Eddie Gaffney	10	Son	Office Boy	New York
10	Mary Gaffney	13	Daughter	—	New York
11	James Gaffney	5	Son	—	New York
12	William Schroder	50	Roomer	Laborer	Germany
13	Jeremiah Callahan	66	Head	Blacksmith	Ireland
14	Mary Callahan THIS PERSON	59	Wife	Janitor	Ireland
15	William Callahan	22	Son	Clerk	Ireland
16	John Haffey	32	Head	Helper	New York
17	Helen Haffey	26	Wife	—	New York
18	May Haffey	7	Daughter	—	New York
19	Helen Haffey	4	Daughter	—	New York
20	Margaret Haffey	2	Daughter	—	New York
21	Robert Schiffer	50	Head	Layer	New York
22	Margaret Schiffer	47	Wife	—	New York
23	Lillian Schiffer	18	Daughter	Clerk	New York
24	Robert Jr. Schiffer	13	Son	—	New York
25	Anna Schiffer	11	Daughter	—	New York
26	William Martin	72	Father-in-law	—	New York
27	Mary Martin	72	Mother-in-law	—	New York
28	Peter Martin	19	Brother-in-law	—	New York
29	August Huering	59	Head	Clerk	New York
30	Mary Huering	58	Wife	—	New York
31	Alfred Huering	28	Son	Helper	New York
32	May Hunt	34	Daughter	Operator	New York
33	William Hunt	12	G. Son	—	New York
34	Catherine Hunt	10	G. Daughter	—	New York
35	John Shattuck	48	Head	Salesman	New York
36	Mary Shattuck	48	Wife	—	New York
37	John Jr. Shattuck	18	Son	Helper	New York
38	Willie Shattuck	14	Son	—	New York
39	Elizabeth Shattuck	13	Daughter	—	New York
40	Edward Shattuck	11	Son	—	New York
41	Francis R. Kramer	58	Head	—	New York
42	Adolphine Kramer	52	Wife	Yes	Germany
43	Frank Kramer	30	Son	—	New York
44	Henry Kramer	26	Son	Splicer	New York
45	Joseph Surani	58	Head	Yes	Italy
46	Rose Surani	53	Wife	Yes	Italy
47	Joseph Jr. Surani	18	Son	Helper	Italy\|New York
48	Anna Surani	14	Daughter	—	New York
49	Avail Kramer	29	Head	Splicer	New York
50	Mildred Kramer	25	Wife	—	New York

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1930 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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