Mary Grace — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · Kent, Delaware

Our Model Tree links this Mary Grace across the 1920 and 1930 US Censuses in Kent, Delaware (XGBoost, ~Confirmed) — first a daughter (b.~1893), then head of a 5-person household.

Age 37 b. ~1893 Female Daughter Born: Delaware Single

1930 Census Record Details

Census Year	1930
Location	Kent, Delaware
Surname	Grace
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	37
Marital Status	Single
Birthplace	Delaware
Age at First Marriage	37
Father's Birthplace	Delaware
Mother's Birthplace	Delaware
Additional Details
Can Read/Write	Yes
Birth State	Delaware
Birth Country	United States
Birthplace (normalized)	delaware
Township / Ward	7Th District
Est. Birth Year	~1893

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Robert Grace	Head	—	71	~1859
Julia Grace	Spouse	—	68	~1862
Harry Grace	Son	—	27	~1903
Matilda Grace	Daughter	—	40	~1890
Mary Grace	Daughter	—	37	~1893

Census Appearances

1920

Kent, Delaware

Daughter, age 27

Kent, Delaware · implied b. ~1893 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Grace
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	27
Marital Status	Single
Birthplace	Delaware
Father's Birthplace	Delaware
Mother's Birthplace	Delaware
Occupation	Helper
Industry	At Home
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Delaware
Birth Country	United States
Birthplace (normalized)	delaware

1930

Kent, Delaware

Daughter, age 37

Kent, Delaware · implied b. ~1893 — 5 household members

Surname	Grace
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	37
Marital Status	Single
Birthplace	Delaware
Age at First Marriage	37
Father's Birthplace	Delaware
Mother's Birthplace	Delaware
Can Read/Write	Yes
Birth State	Delaware
Birth Country	United States
Birthplace (normalized)	delaware

Model Tree

Linked across censuses

Our Model Tree links Mary Grace across 2 US Census years (1920 and 1930) in Kent, Delaware, using XGBoost record linkage.

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This person

Anchor record

Mary Grace

Daughter · 1930 · age 37 · b. ~1893 · Delaware

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Sibling

Matilda Grace

Sibling · 1930 · age 40

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Harry Grace

Sibling · 1930 · age 27

Source co-child of head (derived)

● Co-child · derived · ~0.88

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

Original Census Page

1930 US Federal Census — Kent, Delaware Open full size

Page Contents

50 people indexed on this census page (ia:1930:15thcensus286unit:0499)

Line	Name	Age	Relation	Occupation	Birthplace
51	Irene S Keen	10	Daughter	—	Delaware
52	Boyd J Keen	11	Son	—	Delaware
53	Irene Keen	10	Son	—	Delaware
54	Preston Jr. Keen	10	Son	—	Delaware
55	Lydia Isidore	67	Head	—	Russia
56	Edward T Lodge	33	Head	Farmer	Delaware
57	Annie M Lodge	27	Wife	—	Maryland
58	Alice C Lodge	35	Servant	Housework	Delaware
59	Henry Graham	70	Head	—	Delaware
60	John Lippincott	73	Head	—	Delaware
61	Leonard Lodge	53	Head	Carpenter	Delaware
62	Adeline S Lodge	51	Wife	—	Delaware
63	Alice Lodge	11	Daughter	—	Delaware
64	Leona Lodge	7	Daughter	—	Delaware
65	John Pratt	55	Head	Farmer	Delaware
66	William E Pratt	51	Brother	Farm Hand	Delaware
67	Robert Sr. Grace	71	Head	Farmer	Delaware
68	Julia Grace	68	Wife	—	Delaware
69	Matilda R Grace	40	Daughter	—	Delaware
70	Mary Grace THIS PERSON	37	Daughter	—	Delaware
71	Harry Grace	27	Son	Laborer	Delaware
72	John Schultz	42	Head	Farmer	Delaware
73	Lydia A Schultz	35	Wife	—	Delaware
74	Robert G Schultz	16	Son	—	Delaware
75	James J Schultz	14	Son	—	Delaware
76	John J Schultz	12	Son	—	Delaware
77	Catherine D Schultz	6	Daughter	—	Delaware
78	Fred Schultz	3	Son	—	Delaware
79	Charles E Schultz	1	Son	—	Delaware
80	Henry L Smith	66	Head	Farmer	Delaware
81	Esther Smith	65	Wife	—	Delaware
82	Alice E Lippincott	37	Daughter	Hand Laundry	Delaware
83	John Nichols	71	Head	Farmer	Maryland
84	Annetta Nichols	63	Wife	—	Maryland
85	Lawrence Roe	44	Head	Farmer	Delaware
86	Annie Roe	37	Wife	—	Delaware
87	John W Roe	15	Son	—	Delaware
88	Eileen Roe	13	Daughter	—	Delaware
89	Lydia J Roe	6	Sister	—	Delaware
90	Franklin J Roe	4	Son	—	Delaware
91	Lydia E Roe	2	Daughter	—	Delaware
92	Charles W Smith	53	Head	Farmer	Delaware
93	Mary H Smith	51	Wife	—	Delaware
94	Howard J Lippincott	29	Son-in-law	Salesman	Delaware
95	Harry Shearer	31	Head	Farmer	Delaware
96	Edith M Shearer	28	Wife	—	Delaware
97	Shelley C Farling	53	Head	Farmer	New York
98	Alice H Farling	49	Wife	—	New York
99	Walter J Farling	28	Son	Trucking	New York
100	Shirley C Farling	23	Son	Truckman	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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