John Kozlowski — 1910 US Census Record

Linked across censuses

1910 United States Federal Census · Erie, New York

Our Model Tree links this John Kozlowski across the 1900 and 1910 US Censuses in Erie, New York (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 9-person household.

Age 40 b. ~1870 Male Head Born: Germany Married

1910 Census Record Details

Census Year	1910
Location	Erie, New York
Surname	Kozlowski
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Germany
Years Married	16
Year of Immigration	1886
Naturalization Status	First papers filed
Father's Birthplace	Germany
Mother's Birthplace	Germany
Additional Details
Occupation	Laborer
Industry	Steel Mill
Can Read	Yes
Can Write	Yes
Speaks English	Polish
Birth Country	Germany
Birthplace (normalized)	germany
Occupation	Laborer
Township / Ward	Buffalo City
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.

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

Name	Relation to head	Relative to John	Age	Birth yr
Rose Kozlowski	Daughter	—	13	~1897
John Kozlowski	Head	—	40	~1870
John Kozlowski	Son	—	15	~1895
Clara Kozlowski	Daughter	—	5	~1905
Raymond Kozlowski	Son	—	3	~1907
Frank Kozlowski	Son	—	11	~1899
Mary Kozlowski	Spouse	—	37	~1873
Leo Kozlowski	Son	—	9	~1901
Helen Kozlowski	Daughter	—	7	~1903

Census Appearances

1900

Erie, New …

Head, age 30

Erie, New York · implied b. ~1870 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Kozlowski
Given Name	John
Relationship to Head	head
Sex	M
Color / Race	White
Age	30
Marital Status	Married
Birthplace	Germany
Birth Month	Feb
Birth Year	1870
Year of Immigration	1890
Naturalization Status	First papers filed
Father's Birthplace	Germany
Mother's Birthplace	Germany
Occupation	Day laborer
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth Country	Germany
Birthplace (normalized)	germany

1910

Erie, New …

Head, age 40

Erie, New York · implied b. ~1870 — 9 household members

Surname	Kozlowski
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Germany
Years Married	16
Year of Immigration	1886
Naturalization Status	First papers filed
Father's Birthplace	Germany
Mother's Birthplace	Germany
Occupation	Laborer
Industry	Steel Mill
Can Read	Yes
Can Write	Yes
Speaks English	Polish
Birth Country	Germany
Birthplace (normalized)	germany

Model Tree

Linked across censuses

Our Model Tree links John Kozlowski across 2 US Census years (1900 and 1910) in Erie, New York, using XGBoost record linkage.

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This person

Anchor record

John Kozlowski

Head · 1910 · age 40 · 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

1910 US Federal Census — Erie, New York Open full size

Page Contents

50 people indexed on this census page (ia:1910:13thcensus1910po942unit:0770)

Line	Name	Age	Relation	Occupation	Birthplace
1	John Kozlowski THIS PERSON	40	Head	Laborer	Germany
2	Mary Kozlowski	37	Wife	—	Germany
3	John Kozlowski	15	Son	Bartender	New York
4	Rose Kozlowski	13	Daughter	—	New York
5	Frank Kozlowski	11	Son	—	New York
6	Leo Kozlowski	9	Son	—	New York
7	Helen Kozlowski	7	Daughter	—	New York
8	Clara Kozlowski	5	Daughter	—	New York
9	Raymond Kozlowski	3	Son	—	New York
10	Joseph Mioducki	53	Head	Mail Carrier	Germany
11	Mary Mioducki	51	Wife	Housework	Germany
12	Leo Mioducki	25	Son	Assembler	New York
13	Albert Mioducki	22	Son	Goldsmith	New York
14	Paul Tyszkiewicz	45	Head	Mason	Germany
15	Katherine Tyszkiewicz	41	Wife	Washerwoman	Germany
16	Nole	31	Head	Butcher	Germany
17	Mary Nole	31	Wife	Housework	Germany
18	Helen Nole	12	Daughter	—	Germany
19	John Nole	11	Son	—	Germany
20	Frank Nole	9	Son	—	Germany
21	Mary Nole	5	Daughter	—	Germany
22	Frances Nole	0	Daughter	—	New York
23	John Guzowski	41	Head	Molder	Germany
24	Rose Guzowski	37	Wife	—	Germany
25	John Guzowski	16	Son	—	New York
26	Helen Guzowski	13	Daughter	—	New York
27	Mary Guzowski	11	Daughter	—	New York
28	Walter Guzowski	8	Son	—	New York
29	Martha Guzowski	6	Daughter	—	New York
30	Edward Guzowski	4	Son	—	New York
31	Frank Kozlowski	31	Head	Molder	Germany
32	Mary Kozlowski	28	Wife	Housework	Germany
33	Frank Kozlowski	7	Son	—	New York
34	Helen Kozlowski	5	Daughter	—	New York
35	Edward Kozlowski	2	Son	—	New York
36	John Szczepanski	41	Head	Carpenter	Germany
37	Stefania Szczepanski	35	Wife	—	Germany
38	Martha Szczepanski	14	Daughter	—	New York
39	John Szczepanski	12	Son	—	New York
40	Leo Szczepanski	10	Son	—	New York
41	Mary Szczepanski	8	Daughter	—	New York
42	Helen Szczepanski	6	Daughter	—	New York
43	Frank Szczepanski	4	Son	—	New York
44	Joseph Szczepanski	2	Son	—	New York
45	John Kozlowski	35	Head	Laborer	Germany
46	Mary Kozlowski	33	Wife	—	Germany
47	John Kozlowski	9	Son	—	New York
48	Frank Kozlowski	7	Son	—	New York
49	Helen Kozlowski	5	Daughter	—	New York
50	Mary Kozlowski	3	Daughter	—	New York

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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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