Mary Costello — 1910 US Census Record

Linked across censuses

1910 United States Federal Census · Essex, New Jersey

Our Model Tree links this Mary Costello across the 1900 and 1910 US Censuses in Essex, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1870), then head of a 10-person household.

Age 40 b. ~1870 Female Spouse Born: New York Married

1910 Census Record Details

Census Year	1910
Location	Essex, New Jersey
Surname	Costello
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	40
Marital Status	Married
Birthplace	New York
Years Married	16
Children Born	4
Children Living	4
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Additional Details
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Township / Ward	Newark
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.

10 people recorded at the same address in the 1910 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
James Costello	Head	—	47	~1863
James Costello	Son	—	12	~1898
John Costello	Son	—	10	~1900
Peter Costello	Son	—	6	~1904
James Costello	Son	—	1	~1909
Louis Costello	Son	—	2	~1908
Walter Costello	Son	—	14	~1896
Irene Costello	Spouse	—	27	~1883
Rose Costello	Spouse	—	36	~1874
Mary Costello	Spouse	—	40	~1870

Census Appearances

1900

Hudson, New …

Spouse, age 30

Hudson, New Jersey · implied b. ~1870 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Costelloe
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	29
Marital Status	Married
Birthplace	New York
Birth Month	June
Birth Year	1870
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read	Yes
Can Write	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1910

Essex, New …

Spouse, age 40

Essex, New Jersey · implied b. ~1870 — 10 household members

Surname	Costello
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	40
Marital Status	Married
Birthplace	New York
Years Married	16
Children Born	4
Children Living	4
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Linked across censuses

Our Model Tree links Mary Costello across 2 US Census years (1900 and 1910) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Mary Costello

Spouse · 1910 · age 40 · b. ~1870 · New Jersey

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

Original Census Page

1910 US Federal Census — Essex, New Jersey Open full size

Page Contents

50 people indexed on this census page (ia:1910:13thcensus1910po879unit:0915)

Line	Name	Age	Relation	Occupation	Birthplace
51	John Costello	49	Head	Cooper	New Jersey
52	Mary Costello	41	Wife	—	New Jersey
53	Margaret Costello	16	Daughter	Cashier	New Jersey
54	John Costello	15	Son	Errand	New Jersey
55	Helen Costello	14	Daughter	—	New Jersey
56	Alice Costello	12	Daughter	—	New Jersey
57	Joseph Costello	10	Son	—	New Jersey
58	George Costello	8	Son	—	New Jersey
59	James Costello	6	Son	—	New Jersey
60	Anna Costello	4	Daughter	—	New Jersey
61	Thomas Costello	1	Son	—	New Jersey
62	Michael Costello	36	Brother	Driver	New Jersey
63	Mary Costello	26	Sister-in-law	—	New York
64	John Costello	3	Nephew	—	New York
65	Mary Costello	1	Niece	—	New Jersey
66	Thomas Costello	30	Head	Jeweler	New Jersey
67	Minnie Costello	28	Wife	—	New Jersey
68	Thomas Costello	1	Son	—	New Jersey
69	James Costello	47	Head	—	Ireland
70	Mary Costello THIS PERSON	40	Wife	—	New York
71	Walter Costello	14	Son	Stenographer	New York
72	James Costello	12	Son	—	New York
73	John Costello	10	Son	—	New York
74	Peter Costello	6	Son	—	New York
75	Rose Costello	36	Wife	Musician	New Jersey
76	Irene Costello	27	Wife	—	New Jersey
77	Louis Costello	2	Son	—	New Jersey
78	James Costello	1	Son	—	New Jersey
79	James Costello	32	Head	Saloonkeeper	New Jersey
80	Rose Costello	31	Wife	—	New Jersey
81	Alice Costello	10	Daughter	—	New Jersey
82	John Costello	35	Head	Foreman	New Jersey
83	Mary Costello	32	Wife	—	New Jersey
84	Alice Costello	10	Daughter	—	New Jersey
85	John Costello	35	Head	Engineer	New Jersey
86	Mary Costello	32	Wife	—	New Jersey
87	Alice Costello	10	Daughter	—	New Jersey
88	John Costello	35	Head	Shipping Clerk	New Jersey
89	Mary Costello	32	Wife	—	New Jersey
90	Alice Costello	10	Daughter	—	New Jersey
91	John Costello	35	Head	Clerk	New Jersey
92	Mary Costello	32	Wife	—	New Jersey
93	Alice Costello	10	Daughter	—	New Jersey
94	John Costello	35	Head	—	New Jersey
95	Mary Costello	32	Wife	—	New Jersey
96	Alice Costello	10	Daughter	—	New Jersey
97	John Costello	35	Head	Collector	New Jersey
98	Mary Costello	32	Wife	—	New Jersey
99	Alice Costello	10	Daughter	—	New Jersey
100	John Costello	35	Head	—	New Jersey

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1910 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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