Mary Nelson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · New-Castle-County, Delaware

Our Model Tree links this Mary Nelson across the 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 4-person household.

Age 40 b. ~1900 Female Spouse Born: Delaware Married

1940 Census Record Details

Census Year	1940
Location	New-Castle-County, Delaware
Surname	Nelson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Delaware
1935 Residence (City)	St. Georges Hundred District 13 R-D #13
1935 Residence (County)	New Castle
Additional Details
Class of Worker	0
Highest Grade	8
1935 Residence	Same House
Birth State	Delaware
Birth Country	United States
Birthplace (normalized)	delaware
Township / Ward	St Georges Hundred District 13 Rd 13
Est. Birth Year	~1900

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 1940 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Betty Nelson	Daughter	—	12	~1928
Frances Nelson	Daughter	—	17	~1923
Clyde Nelson	Head	—	42	~1898
Mary Nelson	Spouse	—	40	~1900

Census Appearances

1920

New Castle, …

Other, age 22

New Castle, Delaware · implied b. ~1898 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelson
Given Name	Mary
Relationship to Head	Servant
Sex	F
Color / Race	Black
Age	22
Marital Status	Single
Birthplace	Delaware
Father's Birthplace	Delaware
Mother's Birthplace	Delaware
Occupation	Farm Laborer
Class of Worker	W
Can Read	Yes
Can Write	Yes
Birth State	Delaware
Birth Country	United States
Birthplace (normalized)	delaware

1930

New Castle, …

Other, age 32

New Castle, Delaware · implied b. ~1898 — 12 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelson
Given Name	Mary
Relationship to Head	Roomer
Sex	F
Color / Race	White
Age	32
Marital Status	Married
Birthplace	Delaware
Father's Birthplace	Delaware
Mother's Birthplace	Delaware
Occupation	Servant
Industry	Private Family
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	no
Birth State	Delaware
Birth Country	United States
Birthplace (normalized)	delaware

1940

New-Castle-County, Delaware

Spouse, age 40

New-Castle-County, Delaware · implied b. ~1900 — 4 household members

Surname	Nelson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Delaware
1935 Residence (City)	St. Georges Hundred District 13 R-D #13
1935 Residence (County)	New Castle
Class of Worker	0
Highest Grade	8
1935 Residence	Same House
Birth State	Delaware
Birth Country	United States
Birthplace (normalized)	delaware

Model Tree

Linked across censuses

Our Model Tree links Mary Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Mary Nelson

Spouse · 1940 · age 40 · b. ~1900 · Delaware

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

Original Census Page

1940 US Federal Census — New-Castle-County, Delaware Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00546-00851)

Line	Name	Age	Relation	Occupation	Birthplace
1	Lloyd G Vogels	47	Head	Farmer	Delaware
2	Mabel Vogels	42	Wife	—	Delaware
3	Ruth Vogels	19	Daughter	—	Delaware
4	Marcel Vogels	17	Son	—	Delaware
5	Betty Vogels	15	Daughter	—	Delaware
6	Lula Vogels	13	Daughter	—	Delaware
7	Lydia Vogels	11	Daughter	—	Delaware
8	Herman Vogels	6	Son	—	Delaware
9	Althea Vogels	4	Daughter	—	Delaware
10	William Vogels	3	Son	—	Delaware
11	James Vogels	1	Son	—	Delaware
12	Catherine Harris	39	Head	Farmer	Delaware
13	Frances Harris	21	Daughter	Farmer	Delaware
14	Louise Harris	20	Daughter	Clerk	Delaware
15	Alan Harris	18	Son	—	Delaware
16	John Hammond	75	Father in law	Laborer Farm	Maryland
17	Ward Main	58	Hired man	Laborer Farm	Maryland
18	Otel Malahala	34	Hired man	Laborer Farm	North Carolina
19	Rupert Reynolds	38	Head	Farmer	Maryland
20	Carrie Reynolds	39	Wife	—	Delaware
21	Emma Waters	23	Servant	Cook	Delaware
22	Oscar Hopkins	49	Hired man	Laborer Farm	Maryland
23	William Johnson	34	Head	Farmer Laborer	Virginia
24	Ida Johnson	28	Wife	—	Delaware
25	William Poat	15	Step son	Farm Laborer	Delaware
26	George Cannon	46	Boarder	Farm Laborer	Virginia
27	Isaac Lloyd	40	Head	Carpenter	Maryland
28	Elizabeth Lloyd	72	Mother	—	Maryland
29	Edith Clough	19	Servant	Servant	Maryland
30	May Lloyd	14	Wife	—	Delaware
31	Samuel S. Beats	36	Head	Farmer	Delaware
32	Alice A. Beats	33	Wife	—	Delaware
33	John M. Beats	3	Son	—	Delaware
34	Eleanora Bradley	17	Servant	Servant	Delaware
35	Robert Benson	23	Hired man	Laborer	North Carolina
36	Leona P. Lynch	74	Head	—	Delaware
37	Clyde Nelson	42	Head	Farmer	Delaware
38	Mary Nelson THIS PERSON	40	Wife	—	Delaware
39	Frances Nelson	17	Daughter	Farm Laborer	Delaware
40	Betty Nelson	12	Daughter	—	Delaware

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1940 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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