William Knapp — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · Fairfield, Connecticut

Our Model Tree links this William Knapp across the 1920 and 1930 US Censuses in Fairfield, Connecticut (XGBoost, ~Confirmed) — first a head (b.~1851), then head of a 7-person household.

Age 79 b. ~1851 Male Head Born: New York Married

1930 Census Record Details

Census Year	1930
Location	Fairfield, Connecticut
Surname	Knapp
Given Name	William H
Relationship to Head	Head
Sex	M
Color / Race	White
Age	79
Marital Status	Married
Birthplace	New York
Age at First Marriage	21
Father's Birthplace	New York
Mother's Birthplace	New York
Additional Details
Can Read/Write	Yes
Home Owned/Rented	Yes
Home Value / Rent	Civil
Radio Set	R
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Township / Ward	Danbury
Est. Birth Year	~1851

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.

7 people recorded at the same address in the 1930 census.

Name	Relation to head	Relative to William	Age	Birth yr
William Knapp	Son	—	44	~1886
Charles Knapp	Son	—	39	~1891
Lucretia Knapp	Spouse	—	74	~1856
David Knapp	Son	—	54	~1876
Earle Knapp	Son	—	34	~1896
William Knapp	Head	—	79	~1851
Lillian Knapp	Daughter	—	52	~1878

Census Appearances

1920

Fairfield, Connecticut

Head, age 73

Fairfield, Connecticut · implied b. ~1847 — 9 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Knapp
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	73
Marital Status	Married
Birthplace	New York
Father's Birthplace	New York
Mother's Birthplace	New York
Occupation	Farmer
Industry	Farm
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Home Owned/Rented	R
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1930

Fairfield, Connecticut

Head, age 79

Fairfield, Connecticut · implied b. ~1851 — 7 household members

Surname	Knapp
Given Name	William H
Relationship to Head	Head
Sex	M
Color / Race	White
Age	79
Marital Status	Married
Birthplace	New York
Age at First Marriage	21
Father's Birthplace	New York
Mother's Birthplace	New York
Can Read/Write	Yes
Home Owned/Rented	Yes
Home Value / Rent	Civil
Radio Set	R
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Linked across censuses

Our Model Tree links William Knapp across 2 US Census years (1920 and 1930) in Fairfield, Connecticut, using XGBoost record linkage.

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This person

Anchor record

William Knapp

Head · 1930 · age 79 · b. ~1851 · Connecticut

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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 — Fairfield, Connecticut Open full size

Page Contents

50 people indexed on this census page (ia:1930:15thcensus257unit:0565)

Line	Name	Age	Relation	Occupation	Birthplace
1	Nellie F Purgurou	66	Head	—	Connecticut
2	Emmett Handrahan	28	Head	Laborer	Canada
3	Charlotte E Handrahan	26	Wife	—	Connecticut
4	Alice J Bailey	68	Head	—	Connecticut
5	Ira S Bailey	39	Son	Contractor	Connecticut
6	Lyman W Bailey	18	Grandson	Chauffeur	Connecticut
7	Ruth M Bailey	15	Daughter	—	Connecticut
8	John A Kelley	42	Head	Hatter	Connecticut
9	Hazel U Kelley	30	Wife	—	New York
10	Arletta Kelley	18	Daughter	—	Connecticut
11	Seeley M Kelley	15	Son	—	Connecticut
12	Gordon F Kelley	13	Son	—	Connecticut
13	William B Kelley	12	Son	—	Connecticut
14	Francis R Kelley	5	Son	—	Connecticut
15	Annie Ducan	74	Head	—	New York
16	Arthur Matthews	8	Nephew	—	Connecticut
17	Lyman Munroe	37	Head	Auto Washer	Connecticut
18	Maude W Munroe	34	Wife	—	New York
19	Grace E Munroe	5	Daughter	—	Connecticut
20	Frank P Carey	67	Head	Salesman	Connecticut
21	Catherine E Carey	35	Daughter	Bookkeeper	Connecticut
22	Gayle Davis	47	Head	Painter	New York
23	Mabel A Davis	32	Wife	Waitress	New York
24	Alfred J Davis	14	Son	—	New York
25	Robert A Davis	13	Son	—	New York
26	Edward A Davis	11	Son	—	Connecticut
27	Elizabeth M Davis	10	Daughter	—	Connecticut
28	Muriel A Davis	7	Daughter	—	Connecticut
29	Florence C Davis	5	Daughter	—	Connecticut
30	Benjamin Burkhardt	57	Head	Carpenter	Connecticut
31	Mary Burkhardt	56	Wife	—	Connecticut
32	Fred G Schoon	44	Head	Carpenter	Connecticut
33	Frederick B Schoon	8	Son	—	Connecticut
34	Mildred M Schoon	2	Daughter	—	Connecticut
35	Robert C Mauch	65	Head	Carpenter	Virginia
36	Lina M Mauch	48	Wife	—	Connecticut
37	William H Knapp THIS PERSON	79	Head	—	New York
38	Lucretia H Knapp	74	Wife	—	New York
39	David R Knapp	54	Son	Laborer	New York
40	Lillian Knapp	52	Daughter	—	New York
41	William H Jr Knapp	44	Son	Laborer	New York
42	Charles Knapp	39	Son	Carpenter	New York
43	Earle F Knapp	34	Son	Carpenter	New York
44	Ignatz Cenza	48	Head	Farmer	Poland
45	Daniel Cenza	37	Wife	—	Poland
46	Joe Cenza	12	Son	—	Connecticut
47	Frank Cenza	9	Son	—	Connecticut
48	Helen Cenza	6	Daughter	—	Connecticut
49	Isidore Cenza	3	Son	—	Connecticut
50	Dorothy Cenza	2	Daughter	—	Connecticut

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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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